twin disc

TWIN DISC INCORPORATED

TWIN DISC

®

Service Manual Power Take-Off

Model: SP14

Document Number: 1022763

NOTICE Twin Disc, Incorporated makes no warranty or guaranty of any kind, expressed, implied or otherwise, with regard regar d to the information contained within this manual. Twin Disc, Incorporated has developed this manual through research and testing of the information contained therein. Twin Disc, Incorporated assumes no responsibility for any errors that may appear in this manual and shall not be liable under any circumstances for incidental, consequential or punitive damages in connection with, or arising out of, the use of this manual. The information contained within this manual is subject to change without notice.

Document Number 1022763

Issued January, 2008

Power Take-off Service Manual

REVISION AND REISSUE DA DAT TA Issued

January, 2008

BEFORE YOU ST START ART This manual replaces: #1015708 for use with model SP114P Series, #1021088 for use with model SP114P Series #1015998 for use with model SP214OP Series #1015999 for use with model SP114P Series, #1017533 for use with model SP214IL, SP314IL Series #1015486 for use with model SP314P Series, #1016066 for use with model SPE114P SPE114P,, SPE214P, SPE214P, SPE314P Series #1016619 for use with model SP314SB Series, #1020992 for use with model SP314P Series #1019024 for use with model RFD214 & RFD314 Series

LIMITED TWIN DISC GENERAL WARRANTY, LIMITATIONS OF REMEDIES AND LIMITATION OF OTHER WARRANTIES A.

Twin Disc, Incorporated warrants all assembled products and parts (except component products or parts on which written warranties are issued by the respective manufacturers thereof and are furnished to the original customer, as to which Twin Disc, Incorporated makes no warranty and assumes assumes no liability) against defective defective materials or workmanship. For products and parts other than Rockford power take-offs, such warranty shall extend for a period of twenty-four (24) months from the date of original shipment by Twin Disc, Incorporated to the original customer, but not to exceed twelve (12) months of service or two thousand (2,000) hours of service, whichever occurs first. This is the only warranty made by Twin Disc, Incorporated and is in lieu of any and all other warranties, express or implied, including the warranties of merchantability and fitness for a particular purpose and no other warranties are implied or intended to be given by Twin Disc, Incorporated. The original customer does not rely upon any tests or inspections by Twin Disc, Incorporated or on Twin Disc, Incorporated's application engineering.

B.

In consideration of the Limited Twin Disc General Warranty (hereafter called warranty) and price Twin Disc, Incorporated charges (which reflects Twin Disc, Incorporated's limited liability), the exclusive remedy provided by Twin Disc, Incorporated whether arising out of warranty within the applicable warranty period as specified, or otherwise (including tort liability), shall at the sole option of Twin Disc, Incorporated be either the repair or replacement of any Twin Disc, Incorporated part or product found by Twin Disc, Incorporated to be defective (or equivalent credit). Under no circumstances, including a failure of the exclusive remedy, remedy, shall shall Twin Disc, Incorporated be liable liable for economic loss, loss, consequential, punitive punitive or incidental damages. The damages. The above warranty and remedy are subject to the following terms and conditions: 1.

C.

Complete parts or products upon request must must be returned transportation prepaid and also the claims submitted to Twin Disc, Incorporated within sixty (60) days after completion of the in warranty repair. 2. The warranty is void void if, in the opinion of Twin Disc, Disc, Incorporated, Incorporated, the the failure of the part or product resulted from from abuse, neglect, improper maintenance or accident. 3. The warranty is void void if any modifications modifications are made to any product or part without without the prior written written consent consent of Twin Disc, Incorporated. 4. The warranty is void unless the product product or part is properly transported, transported, stored and cared for for from the date of shipment shipment to the date placed in service. 5. The warranty is void void unless unless the product product or part is properly properly installed installed and maintained maintained within the rated capacity capacity of the the product or part with installations properly engineered and in accordance with the practices, methods and instructions approved or provided by Twin Disc, Incorporated. 6. The warranty is void unless all required replacement parts or products products are of Twin Twin Disc Disc origin origin or are Twin Twin Disc authorized replacement parts, and otherwise identical identical with components of the original equipment. Replacement parts or products not of Twin Disc origin are not warranted by Twin Disc, Incorporated. As consideration for this warranty, the original customer customer and subsequent purchaser purchaser agree to indemnify indemnify and hold Twin Disc, Incorporated harmless from and against all and any loss, liability, damages or expenses for injury to persons or property, including without limitation, the original customer's and subsequent purchaser's employees and property, due to their acts or omissions or the acts or omissions of their agents, and employees in the installation, transportation, maintenance, use and operation of said equipment.

D.

Only a Twin Disc, Incorporated Incorporated authorized factory representative representative shall have authority authority to assume any cost cost or expense in the service, repair or replacement of any part or product within the warranty period, except when such cost or expense is authorized in advance in writing by Twin Disc, Incorporated.

E.

Twin Disc, Incorporated Incorporated reserves the right to improve the product product through changes in design design or materials without without being obligated to incorporate such changes in products of prior manufacture. manufacture. The original customer and subsequent purchasers will not use any such changes as evidence of insufficiency or inadequacy of prior designs or materials.

F.

If failure occurs within the warranty period, and constitutes constitutes a breach of warranty, repair or replacement parts will be furnished on a no charge basis and these parts will be covered by the remainder of the unexpired warranty which remains in effect on the complete unit.

*Note The Above constitutes the basic basic Twin Disc, Incorporated General Limited Limited Warranty and may be supplemented supplemented by additional published warranty terms dependent upon the product involved. Supplementary warranty terms are available upon request.

December 14, 2007

TDWP0001 rev 2008

NOTES

Twin Disc, Incorporated

Table of Contents

Table of Contents Introduction Introd uction ...... ........... ........... ........... ........... ............ ............ ............ ............ ........... ....... 11 General Information ...................... ............................................. .............................................. ............................... ........ 11 Replacement Replacem ent Parts Parts........................ ............................................... .............................................. ............................... ........ 12 Preventive Preven tive Maintenance/T Maintenance/Troubles roubleshooting hooting..................... ......................................... .................... 13 Safety Saf ety ...................... ............................................. .............................................. ............................................... ............................... ....... 14 Sources of Service Information ...................... ............................................. ................................... ............ 15 Warran arranty ty .................... ............................................ ............................................... ............................................... ........................... ... 16

Description Descri ption and Spe Specifica cifications tions ..... ........... ........... .......... .......... ....... 17 General Information ...................... ............................................. .............................................. ............................... ........ 17 Finding the Twin Disc Power Take-Off Model Number and Serial Number................................................................. Number.......................................... ............................................... ........................... ... 18 Identifying Identifyin g the Twin Twin Disc Power Take-off Take-off From Its Its Model Number.. Number .. 19 Twin Disc Power Take-Off Take-Off Reference Reference Listing Listing .................... .................................... ................ 20 Twin Disc Power Take-Off Take-Off Reference Reference Listing Listing (continued)................ (continued) ................ 21 Twin Disc Power Take-Off Take-Off Reference Reference Listing Listing (continued)................ (continued) ................ 22 Twin Disc Power Take-Off Take-Off Reference Reference Listing Listing (continued)................ (continued) ................ 23 Identifying Identifyi ng the the SAE Housing Size .................... .......................................... .................................. ............ 24 Specifica Spec ifications tions.................... ........................................... ............................................... ........................................... ................... 25 Twin Disc Disc PTO Support Plate Plate Specificati Specifications ons .................... .................................... ................ 29 Wear Limits...................................... Limits........................................................... ........................................... ............................... ......... 30 Torque Values for Fasteners ....................... .............................................. ....................................... ................ 35

Installat Inst allation ion ..... ........... ........... .......... ........... ........... .......... ........... ........... .......... ........... ........ 39 Installation Tips ..................... Installation ............................................ ............................................... ....................................... ............... 39 Prior to Installa Installation tion (Ref: SAE J1033 J1033 and J617) J617) .................... ................................ ............ 44 Drive Ring Insta Installation llation ...................... ............................................ ........................................... ............................ ....... 48 Ball-Type Ball-T ype Pilot Bearing Installation Installation..................... ............................................ ............................... ........ 49 Roller-Type Roller-T ype Pilot Bearing Insta Installation llation ..................... ............................................ ........................... .... 50 PTO Insta Installation llation to Engine Engine or Driving Driving Member Member ..................... ................................. ............ 52 Hand Lever Position for Twin Twin Disc Power Take-Offs Take-Offs................. ........................ ....... 57 Model SPE114, SPE214 and SPE314 Series Arm Adjustment Procedure ........................ ............................................... .............................................. ............................................... ........................... ... 58

Power Take-Off Service Manual #1022763

7

Table of Contents


Position and Measure Measure Alignment of the Sheave ....................... ............................... ........ 59 Allowable Side Loads ....................... .............................................. .............................................. ........................... .... 60 Alignment - U-Joint-T U-Joint-Type ype Insta Installation llation ..................... ............................................ ........................... .... 74 Setting Up Air Engagement on Twin Twin Disc Power Take Take Offs............. Offs ............. 76

Operation Operat ion ..... .......... ........... ........... ........... ............ ........... ........... ........... .......... ........... ........ ..79 79 General Information ...................... ............................................. .............................................. ............................... ........ 79 Clutch Engagement Procedure ....................... .............................................. ................................... ............ 80

Maintenance Mainte nance ..... ........... ............ ............ ............ ........... ........... ........... ........... ............ ......83 83 Maintenance Tips ...................... Maintenance ............................................. ............................................... ................................... ........... 83 Lubrication Lubric ation .................... ............................................ ............................................... .............................................. ....................... 86 Clutch Adjustment ........................ ............................................... .............................................. ............................... ........ 89 Friction Plate Replacem Replacement ent ..................... ............................................. ........................................... ................... 90 Field Adjustment - Tapered Tapered Roller Bearing Bear ing End Play (side-loaded (side-lo aded pto applications)) (Except SB Models) ..................... applications ......................................... ............................ ........ 91 Field Adjustment - Tapered Roller Bearing End Play - (In-Line pto application applic ations) s) ..................... ............................................ ............................................... ....................................... ............... 92 Field Adjustment - Checking Bearing End Play - Model SP314SB Series Only Only.................... ............................................ ............................................... .......................................... ................... 93

Disassem Disa ssembly bly ..... ........... ........... ........... ........... ........... ........... ........... ........... ........... ........ ..95 95 Power Take-off Take-off Removal From From The Engine....................... Engine ....................................... ................ 96 Clutch Removal ..................... ............................................ ............................................... ....................................... ............... 98 Clutch Disass Disassembly embly ...................... ............................................. .............................................. ............................... ........ 99 Bronze Collar Disasse Disassembly mbly ..................... ............................................. ........................................... ................... 99 Ball Bearing Collar Disassem Disassembly bly .................... ........................................... ................................... ............ 99 Remove the Operating Operating Shaft Shaft and Throwout Yoke Yoke................. ........................... .......... 101 Clutch Shaft Shaft and Housing Housing Disassembly Disassembly - Configuration A ............ 103 Clutch Shaft Shaft and Housing Disasse Disassembly mbly - Configuration Configuration B ............ 105 Clutch Shaft Shaft and Housing Disassembl Disassembly y - Configuration Configuration C & D..... D ..... 107 Clutch Shaft Shaft and Housing Disassembly Disassembly - Configuration E .............11 .............110 0 Clutch Shaft Shaft and Housing Disassembly Disassembly - Configurations F & G .... ....1 112 Clutch Shaft Shaft and Housing Disassembly Disassembly - Configurations Configurations H & I .....114 Clutch Shaft Shaft and Housing Disassem Disassembly bly - Configuration Configuration J .............11 .............117 7

8



Table of Contents

Cleaning and Inspection .................................... 119 Cleaning and Inspectio Inspection n ...................... .............................................. ..............................................11 ......................119 9

Assembly.............................................................123 Clutch Assem Assembly bly ....................... .............................................. ............................................... ................................. ......... 124 Clutch Shaft and Housing Housing Assembly - Configuration Configuration A ................. 131 Clutch Shaft and Housing Housing Assembly - Configuration Configuration B ................. 138 Clutch Shaft Shaft and and Housing Assembly - Configurations C & D ........ 145 Clutch Shaft and Housing Housing Assembly - Configuration Configuration E ................. 154 Clutch Shaft and Housing Housing Assembly Assembly - Configurations Configurations F & G ........ 157 Clutch Clut ch Shaft Shaft and Housing Housing Assembl Assembly y - Configurati Configurations ons H & I ..... ......... .... 161 Clutch Shaft Shaft and Housing Assembly - Configuration Configuration J.................. J .................. 168 Install Insta ll the Operating Shaf Shaftt and Throwout Yoke. ....................... ............................. ...... 171 PTO Final Assembly Assembly...................... ............................................. .............................................. ............................. ...... 173

Illustrations ............................................. ......................................................... ............177 177 List of Illustrations ........................ ............................................... .............................................. ............................. ...... 177 Parts Identification List - SP114, SPE114, SP214, SPE214, SP314, SPE314, SP314SB, RFD214 and RFD314 RFD314 Series ...................... ........................ .. 178 Exploded View (SP1 (SP114, 14, SP214 and RFD214 Series Clutches) ...... 179 Exploded Expl oded View View (SP3 (SP314 14 and and RFD314 RFD314 Series Series Clutc Clutches) hes) ..... .......... .......... ........ ... 180 Exploded View (Configurat (Configuration ion A) .................... .......................................... ................................. ........... 181 Exploded View (Configurati (Configuration on B)..................................................... B)..................................................... 182 Exploded View (Configurati (Configuration on C)..................................................... C)..................................................... 183 Exploded View (Configurati (Configuration on D)..................................................... D)..................................................... 184 Exploded View (Configurati (Configuration on E).................... E) ........................................... ................................. .......... 185 Exploded View (Configurati (Configuration on F) .................... ........................................... ................................. .......... 186 Exploded View (Configurat (Configuration ion G) ................... .......................................... ................................. .......... 187 Exploded View (Configurati (Configuration on H)..................................................... H)..................................................... 188 Exploded View (Configurati (Configuration on I) ..................... ........................................... ................................. ........... 189 Exploded View (Configurat (Configuration ion J) .................... ........................................... ................................. .......... 190 Exploded View (SPE114, SPE214 and SPE314 Series Throwout Mechanism) Mechani sm) ...................... ............................................. ............................................... ..................................... ............. 191


9

Table of Contents

Twin Tw in Disc, Incorporated

Engineering Engine ering Drawings ..... ........... ........... .......... ........... ............ ........... ....... 193 SP114P101 Sheet 2 of SP114P101 of 2 (Typical (Typical Configuration Configuration A) ................... ......................... ...... 195 XA7500 (T (Typical ypical Configurati Configuration on B) ..................... ............................................. ............................... ....... 196 SP214P001 SP214P00 1 Sheet 2 of 2 (Typical (Typical Configuration Configuration C) ......................... 197 X9845 (T (Typical ypical Configurati Configuration on D) ....................... ............................................... ............................... ....... 198 SP314P121 SP314P12 1 Sheet 2 of 2 (T (Typical ypical Configuration Configuration E) ......................... 199 SP214P121 SP214P12 1 Sheet 2 of 2 (Typical (Typical Configuration F) ......................... 200 SP314P123 SP314P12 3 Sheet 2 of 2 (T (Typical Configuration Configuration G)......................... G) ......................... 201 SP314S106 SP314S10 6 Sheet 2 of 2 (Typical (Typical Configuration Configuration H) ......................... 202 SP314S117 SP314S1 17 Sheet 2 of 2 (Typical (Typical Configuration Configuration I)...................... I) ........................... ..... 203 TR435469 Sheet 2 of 2 (Typical (Typical Configuration Configuration J) ........................ ............................ .... 204 SP214P003 Sheet 2 of 2 ................ ................................... ........................................... ................................. ......... 205 SP314P001 Sheet 2 of 2 ................ ................................... ........................................... ................................. ......... 206 SP314P005 Sheet 2 of 2 ................ ................................... ........................................... ................................. ......... 207 SP114C001 SP1 14C001 Sheet Sheet 2 of 2................... 2 ...................................... ...................................... .............................. ........... 208 SP114C008 SP1 14C008 Sheet Sheet 2 of 2................... 2 ...................................... ...................................... .............................. ........... 209 SP214C001 Sheet 2 of 2 ................ ................................... ........................................... ................................. ......... 210 SP214C004 Sheet 2 of 2 ................. .................................. ........................................... ................................... .........21 211 1 SP214C011 SP214C01 1 Sheet 2 of 2 ................ ........................................ ................................................ ............................ .... 212 SP314C001 Sheet 2 of 2 ................ ................................... ........................................... ................................. ......... 213 SP314C010 Sheet 2 of 2 ................ ................................... ........................................... ................................. ......... 214 SP314C007 Sheet 2 of 2 ................ ................................... ........................................... ................................. ......... 215

10



Introduction

Introduction

General Information This publication provides the information necessary for the operation and maintenance of the Twin Disc, Incorporated equipment specified on the cover of this manual. Specific engineering details and performance characteristics can be obtained from the Product Service Department of Twin Disc, Incorporated, Racine, Wisconsin, USA. Operation and maintenance personnel responsible for this equipment should have this manual at their disposal and be familiar with its contents. Applying the information in the manual will result in consistent performance from the unit and help reduce downtime.

Power Take-off Service Manual #1022763

11

Introduction


Replacement Parts

Parts Lists See the engineering assembly drawings in Engineering Drawings, Drawings , parts identification and a nd exploded views in the Illustration section to facilitate ordering spare or replacement parts.

Ordering Parts

All replacement parts or products (including hoses and fittings) must be of Twin Twin Disc origin or equal, and otherwise otherw ise identical with components of the original equipment. Use of any other parts or products will void the warranty and may result in malfunction or accident, causing injury to personnel and /or serious damage to the equipment.

Renewal parts and service parts kits may be obtained from any authorized Twin Disc distributor or service dealer.

Parts Shipment Furnish the complete shipping information and postal address. All parts shipments made from the factory will be FOB factory location, USA. State specifically whether the parts are to be shipped by freight, express, etc. If shipping instructions are not specified, the equipment will be shipped the best way, way, considering time and expense. Twin Disc, Incorporated will not be responsible for any charges incurred by this procedure. Twin Disc, Incorporated having stipulated the bill of material number on the unit’s nameplate absolves itself of any responsibility resulting from any external, internal or installation changes made in the field without w ithout the express written approval of Twin Twin Disc. All returned parts, new or old, emanating from any of the above-stated changes will not be be accepted accepted for credit. Furthermore, any equipment which has been subjected to such changes will not be be covered by a Twin Disc warranty.

12



Introduction

Preventive Maintenance/Troubleshooting

Frequent reference to the information provided in this manual regarding daily operation and limitations of this equipment will assist in obtaining troublefree operation. Schedules are provided for the recommended maintenance of the equipment and, if observed, minimum repairs (aside from normal wear) will result. In the event a malfunction does occur, a troubleshooting table is provided to help identify the problem area and lists information that will help determine the extent of the repairs necessary to get a unit back into operation.

Lifting Bolt Holes Most Twin Twin Disc products have provisions for attaching lifting bolts. The holes provided are always of adequate size and number num ber to safely lift the Twin Disc product.

These lifting points must not be used to lift the complete power unit. Lifting excessive loads at these points could cause failure at the lift point (or points) and result in damage or personal injury.

Select lifting eyebolts to obtain maximum thread engagement with bolt shoulder tight against housing. Bolts should be near but should not contact bottom of bolt hole.


13

Introduction


Safety

General Safe practices must be employed by all personnel operating and servicing this unit. Twin Disc, Incorporated will not be responsible for personal injury resulting from careless use of hand tools, lifting equipment, power tools, or unaccepted maintenance/operating practices.

Important Safety Notice Because of the possible danger to person(s) or property from accidents which may result from the use of manufactured products, it is important that correct procedures be followed. Products must be used in accordance with the engineering information specified. Proper installation, maintenance, and operation procedures must be observed. Inspection should be made as necessary to assure safe operations under prevailing conditions. Proper guards and other suitable safety codes should be provided. These devices are neither provided by Twin Disc, Incorporated nor are they the responsibility of Twin Disc, Incorporated.

14



Introduction

Sources of Service Information

Each series of manuals issued by Twin Disc, Incorporated is current at the time of printing. When required, changes are made to reflect advancing technology and improvements in state-of-the-art. Individual product service bulletins are issued to provide the field with immediate notice of new service information. For the latest service information on Twin Disc products, contact any Twin Disc distributor, or contact the Product Service Department, Twin Disc, Incorporated, Racine , Wisconsin Wisconsin 53405-3698 53405-3698,, USA by e-mail at at [email protected] . Contact information for Authorized Twin Disc Distributors and Service Dealers can be found on the Twin Disc Web site at: http://www.twindisc.com .


15

Introduction


Warranty

Equipment for which this manual was written has a limited warranty. For details of the warranty, refer to the warranty statement at the front of this manual.

16



Description and Specifications


General Information The SP114, SPE114, SPE114, SP214, SPE214, SP314, S P314, SPE314, SP314SB, RFD214 and RFD314 Series Twin Disc Power Take-Offs are engine-mounted power take-offs that use cast iron one-piece or two-piece housings and contain an integral clutch 14 inches in diameter. diamet er. The engine drives the clutch through a drive ring that is bolted to the engine flywheel and connected to the clutch through internal teeth that mesh with external teeth on the clutch friction plates. Clutch engagement and disengagement for most units is accomplished by use of the external hand lever assembly assembl y. Some units may use other actuation methods. Main bearings are lubricated and cooled with oil or grease, depending upon the design specifications. Most units use pilot bearings that are pre-lubricated and sealed for life, although some may require periodic relubrication. Those that require periodic relubrication are lubricated through a grease fitting located in the output end or side of the clutch shaft. SPE models are designed with release mechanism features and a positive clearance mechanism to provide “extended service” and “limited attendance” advantages.


17



Finding the Twin Disc Power Take-Off Model Number and Serial Number

The nameplate identifies the model, bill of material (BOM) and the serial number of the unit. These numbers are necessary to identify the correct parts for your Power Take-Off.

BOM No.

Model No.

S/N

Information and instructions specific to each individual PTO.

Figure 1. Representative Instruction Plate

18




Identifying the Twin Disc Power Take-off From Its Model Number

Typical Model Identification Number: SP11 SP114P-1 4P-1 SP 1 14 P - 1 { { { { { A B C D E

A.

Indicates the type of clutch. SP = Counter balanced, toggle action overcenter clutch SPE = SP model for extended service RFD = Rockford design with combination combinatio n Twin Twin Disc and Rockford designed components

B.

Indica Indi cate tes s the the nu numb mber er of fr fric icti tion on pl plat ates es in th the e clu clutc tch. h. 1 = 1 clutch friction plate 2 = 2 clutch friction plates 3 = 3 clutch friction plates

C.

Indicate Indic ates s the the no nomin minal al siz size e of of the the clu clutc tch h fric frictio tion n plat plates es (in (inch ches es). ). 14 = 14” diameter (nominal), measured just inside the root of the teeth

D.

Indicates th the ho housing de design. P = standard (grease lubricated) main bearings OP = oil lubricated main bearings IL = main bearings for in-line duty only SB = straddle bearing design

E.

Indica Ind cattes the S.A. A.E E. housin ing g siz ize e. 0 = SAE # 0 housing 1 = SAE # 1 housing 2 = SAE # 2 housing


19



Twin Disc Power Take-Off Reference Listing

The Twin Disc Power Take-Off Take-Off Reference Refere nce Listing on the following fol lowing pages refers to various basic design configuration designations used for the main bearing housing. These designations are used primarily to simplify simplify explanation of the disassembly and assembly procedures in this manual. The following chart provides a general description description of the basic features of each configuration configuration and also provides general information inform ation regarding each Twin Disc Power Take-Off. Take-Off. However, always refer to a current BOM for your specific power take-off to insure that the most up-to-date information is being used.

Feature Main Housing and Bearing Carrier 1-piece 2-piece (Separate Items) 2-Piece straddle bearing design Assembly of Main Bearings From opposite ends of shaft (Both) from one end of shaft Retention of Main Bearing(s) Retained by bearing retainer(s) Retained by snap ring(s) Bearing Retainer Threaded Bolted Neither bolted or threaded Both front and rear retainers used None used Retention of Bearing Retainer Retained by lock tab Retained by snap ring(s) Retained by bolts Not Applicable Main Bearing Adjustment Rotate bearing retainer No adjustment Oil Seals in Housing or Brg. Carrier Wear Sleeve(s) on Shaft

20

Configuration A

B

X

X

C

X

E

F

G

X

X

X

X

X

X

I

J

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X X

H

X X

X

D

X

X X

X X

X

X X

X

X X X

X

X

X

X X

X

X

X

X

X X

X

X X

X

X

X

X X

X

X

X

X




Twin Disc Power Take-Off Reference Listing (continued) Main Bearing Throwout Lubrication Collar Type

e s a e r G

l i O

e z n o r B

l l a B

Pilot Bearing Type

l l a B

r e l l o R

Drive Ring Type n o r I t s a C

r a l u d o N

Facing Type

t i l p S

d i l o S

d ’ q e R e t a l P t r o p p u S

Main Bearing Housing Configuration

SP114P0

SP114P001

X

X

X

X

X

A

SP114P0

SP114P003

X

X

X

X

X

A

SP114P1

SP114P101

X

X

X

X

X

A

SP114P1

SP114P102

X

X

X

X

X

A

SP114P1

SP114P103

X

X

X

X

A

SP114P1

SP114P104

X

X

X

X

X

A

SP114P1

SP114P106

X

X

X

X

A

SP114P1

SP114P107

X

X

SP114P1

SP114P108

X

X

X

SP114P1

SP114P109

X

X

X

SP114P1

SP114P110

X

X

X

X

SP114P1

SP114P111

X

X

X

X

SP114P1

SP114P112

X

X

X

X

X

A

SP114P1

SP114P114

X

X

X

X

X

A

SP114P1

SP114P115

X

X

X

X

X

A

SP214P0

SP214P001

X

X

X

X

X

SP214P0

X

X X

X

X X

A X

A

X

A

X

A

X

C

SP214P002

X X

not used

SP214P0

SP214P004

X

X

SP214P0

SP214P006

X

X

SP214P0

SP214P007

X

X

SP214P0

SP214P008

X

X

X

SP214P1

SP214P101

X

X

X

X

X

C

SP214P1

SP214P103

X

X

X

X

C

SP214P1

SP214P104

X

X

X

X

C

SP214P1

SP214P107

X

X

X

X

C

SP214P1

SP214P109

X

X

SP214P1

SP214P110

X

SP214P1

SP214P111

X

X

SP214P1

SP214P113

X

X

SP214P1

SP214P114

X

X

X

SP214P1

SP214P115

X

X

X

SP214P1

SP214P118

X

SP214P1

SP214P120

X

X

SP214IL1

SP214P121

X

X

SP214P1

SP214P122

X

X X

X X

X X

X

C

X

X

X

C

X

X

X

C

X

X X

X

X

X X

C X

C

X

C

X

X

X

X

C

X

C

X

X

C

X

X

X

F

X

X

X

C

X

X

X

D

X

X

B

X

not used

X

X

X X

X

X

C C C

X

X

X X

X

not used

X

X

X

X

SPE214P0 SP214P003

SP214OP1 SP214P125

X

A

X

C

SP214P1

SP214P127

X

X

X

X

X

C

SP214P1

SP214P128

X

X

X

X

X

C

SP214P1

SP214P129

X

X

X

X

C

SP214P1

SP214P130

X

X

X

X

C


X X

21



Twin Disc Power Take-Off Reference Listing (continued) Main Bearing Throwout Lubrication Collar Type

e s a e r G

S P 2 14 P 1

S P2 1 4 P1 3 5

X

X

S P 2 14 P 1

S P2 1 4 P1 3 6

X

X

S P 2 14 P 1

S P2 1 4 P1 3 7

X

S P 2 14 P 1

S P2 1 4 P1 3 8

X

S P 2 14 P 1

S P2 1 4 P1 3 9

X

S P 2 14 P 1

S P2 1 4 P1 4 0

X

X

S P 2 14 P 1

S P2 1 4 P1 4 1

X

X

S P 2 14 P 1

S P2 1 4 P1 4 2

X

S P 3 14 P 0

S P3 1 4 P0 0 1

X

X

S P 3 14 P 0

S P3 1 4 P0 0 2

X

X

S P 3 14 P 0

S P3 1 4 P0 0 3

X

S P 3 14 P 0

S P3 1 4 P0 0 4

l l a B

l l a B

r e l l o R


t i l p S

d i l o S



X

C

X

X

C

X

X

X

C

X

X

X

C

X

X

X

C

X

X

C

X

X

X

C

X

X

X

X

X

X

C

X

X

X

X

C

X

X

X

X

X

C

X

X

X

X

X

X

C

SP E3 1 4 P0 S P3 1 4 P0 0 5

X

not used

X

X

C

SP E3 1 4 P0 S P3 1 4 P0 0 6

X

not used

SP E3 1 4 P0 S P3 1 4 P0 0 7

X

not used

X

S P 3 14 P 0

S P3 1 4 P0 0 8

X

X

X

S P 3 14 P 0

S P3 1 4 P0 0 9

X

X

X

S P 3 14 P 1

S P3 1 4 P1 0 1

X

X

X

S P 3 14 P 1

S P3 1 4 P1 0 2

X

X

S P 3 14 P 1

S P3 1 4 P1 0 3

X

X

S P 3 14 P 1

S P3 1 4 P1 0 4

X

X

S P 3 14 P 1

S P3 1 4 P1 0 5

X

X

S P 3 14 P 1

S P3 1 4 P1 0 6

X

X

S P 3 14 P 1

S P3 1 4 P1 0 7

X

X

S P 3 14 I L 1

S P3 1 4 P1 0 8

X

X

S P 3 14 P 1

S P3 1 4 P1 0 9

X

X

X

SP 31 4 P 1

SP314P110

X

X

X

SP 31 4 I L1

SP314P111

X

X

SP 31 4 P 1

SP314P112

X

X

SP 31 4 P 1

SP314P116

X

X

SP 31 4 P 1

SP314P117

X

X

SP 31 4 P 1

SP314P118

X

X

SP 31 4 P 1

SP314P119

X

X

S P 3 14 P 1

S P3 1 4 P1 2 0

X

X

S P 3 14 I L 1

S P3 1 4 P1 2 1

X

X

S P 3 14 P 1

S P3 1 4 P1 2 2

X

X X X

X

X X

X

S P 3 14 I L 1

S P3 1 4 P1 2 5

X

X

S P 3 14 P 1

S P3 1 4 P1 2 6

X

X

X

X

X

C

X

X

X

C

X

X

C

X

X

C

X

X

X

C

X

X

X

X

C

X

X

X

X

C

X

X

X

C

X

X

X

C

X

X

X

C

X

X

X

C

X

X

X

F

X

X

X

C

X

X

C

X

X

X

F

X

X

X

C

X

X

X

C

X

X

X

C

X

X

X

X

C

X

X

X

X

C

X

X

C

X X

X not used

X

not used

X X

X X

X

X

X

E

X

X

X

X

C

X

X

X

G

X

X

X

C

X

X

X

E

X

X

X

C

X

X

X

not used

X X

X

X

X

X

S P3 1 4 P1 2 4

X

C

X

X

X

S P 3 14 P 1

SP314OP1 SP314P127

X

r a l u d o N

Facing Type

X

SP314OP1 SP314P123

22

l i O

e z n o r B

Pilot Bearing Type

X not used

G




Twin Disc Power Take-Off Reference Listing (continued) Main Bearing Throwout Pilot Bearing Lubrication Collar Type Type

e s a e r G

l i O

e z n o r B

l l a B

l l a B

r e l l o R


r a l u d o N

d i l o S


Facing Type

t i l p S


SP314SB1 SP314S106

X

X

not used

X

X

X

H

SP314SB1 SP314S107

X

X

not used

X

X

X

H

SP314SB1 SP314S108

X

X

not used

X

X

X

H

SP314SB1 SP314S114

X

X

not used

X

X

X

H

SP314SB1 SP314S115

X

X

not used

X

X

X

H

SP314SB1 SP314S116

X

X

not used

X

X

X

H

SP314SB1 SP314S117

X

X

not used

X

X

X

I

SP314SB1 SP314S118

X

X

not used

X

X

X

H

SP314SB1 SP314S119

X

X

not used

X

X

X

H

SP314SB1 SP314S120

X

X

not used

X

X

X

H

SP314SB1 SP314S122

X

X

not used

X

X

X

H

SP314SB1 SP314S123

X

X

not used

X

X

X

H

SP314SB1 SP314S124

X

X

not used

X

X

X

H

RFD214IL TR435469

X

X

X

X

X

J

RFD214IL TR435469A

X

X

X

X

X

J

RFD214IL TR435469B

X

X

X

X

J

RFD314IL TR435470

X

X

X

X

X

E

RFD314IL TR435470A

X

X

X

X

X

E

RFD314IL TR435470B

X

X

X

X

E


23



Identifying the SAE Housing Size

D A

B

C

Table 1. SAE Housing Identification A

Housing SAE Housing Pilot Diameter Size

24

B

C

D

Housing Flange O.D.

Bolt Circle Diameter

Bolt Holes Dia.

Qty.

mm.

inches

mm.

0

647.70

25.500

711.2

28.00

679.45

26.750

1

511.18

20.125

552.4

21.75

530.22

2

447.68

17.625

489.0

19.25

466.72

inches

mm.

mm.

inches

16

14.30

0.563

20.875

12

12.29

0.484

18.375

12

10.99

0.433

inches




Specifications Maximum Maxim um Safe Operating Operat ing Speeds for Twin Twin Disc Power Pow er Take-offs Take-offs (Refer to BOM and Twin Disc Power Pow er Take-Off Take-Off Reference Referenc e Listing on previous pages.) Table 2. Maximum Safe Operating Speeds Speeds Cast Iron Drive Ring Grease- or OilSolid lubricated Main Drive Plate(s) Bearing(s)

PTO Model

Split Drive Plate

Steel or Nodular Drive Ring Solid Drive Plate(s)

Split Drive Plate

SP114 Series

Grease

2400

1950

300 0

2750

SPE114 Series

Grease

2400

1950

300 0

2750

SP214 Series

Grease

2500

1950

300 0

2750

SPE214 Series

Grease

2500

1950

240 0

2400

SP214 Series

Oil

2400

-----

240 0

2400

SP314 Series

Grease

2500

1920

300 0

2700

SP314 Series

Oil

2500

1920

300 0

2700

SPE314 Series

Grease

2500

1920

300 0

2700

SP314SB Series

Grease

-----

-----

300 0

-----

RFD214 Series

Grease

2200

2200

220 0

2200

RFD314 Series

Grease

2200

2200

220 0

2200

Pilot bearing position (If used) (Refer to BOM and Twin Twin Disc Power Pow er Take-Off Take-Off Reference Referenc e Listing on p revious p revious pages.)

Ball-Type The owner/operator is responsible for checking the flywheel to ensure that the pilot bearing is installed on the shaft with sufficient clearance without bottoming in the flywheel bore. The depth of the pilot bore from the flywheel housing face to shoulder on the flywheel pilot flange is 100.07 mm. (3.94 in.).

Roll Ro ller er-T -Typ ype e Table 3. Roller-Type Pilot Bearing Dimensions Roller

Bearing O.D.

Bearing M24 2467 67 72 mm mm. (2 (2.8 .835 35 in in.) .) M252 M2 529 9

Bearing Nominal

Bearing Nominal

Width (C)

Width +/- tolerance

30.1 30 .1 mm mm.. (1. (1.18 185 5 in. in.))

0.5 0. 5 mm. mm. (0 (0.0 .020 20 in in.) .)

80 mm mm.. (3. (3.15 15 in in.) .) 34 34.8 .86 6 mm. mm. (1. (1.37 3725 25 in in.) .) 0. 0.5 5 mm. mm. (0 (0.0 .020 20 in in.) .)

M271 M2 713 3 10 100 0 mm. mm. (3. (3.94 94 in. in.)) 39 39.6 .62 2 mm. mm. (1.5 (1.560 600 0 in. in.)) 0. 0.5 5 mm. mm. (0.0 (0.020 20 in in.) .) Power Take-off Service Manual #1022763

25



Tapered Roller Roll er Bearing End Play Pl ay Table 4. Recommended Bearing End Play for Tapered Roller Bearings Used in Side-Loaded applications

Recommended End Play Model Number SP114P Series

mm. 0.15 - 0.25

inches 0.006 - 0.010

SP214P Series

0.15 - 0.25

0.006 - 0.010

SPE214P Series

0.15 - 0.25

0.006 - 0.010

SP214OP Series

0.15 - 0.25

0.006 - 0.010

SP314P Series

0.15 - 0.25

0.006 - 0.010

SPE314P Series

0.15 - 0.25

0.006 - 0.010

SP314OP Series

0.15 - 0.25

0.006 - 0.010

SP31 SP 314I 4IL L Ser erie ies s

n/a n/ a (Ba Ball ll Bea eari ring ng)) n/ n/a a (Ba (Ball ll Bea eari ring ng))

RFD2 RF D214 14IL IL Se Seri ries es

n/a n/ a (Bal (Balll Bear Bearin ing) g) n/ n/a a (Bal (Balll Bear Bearin ing) g)


n/a n/ a (Bal (Balll Bear Bearin ing) g) n/ n/a a (Bal (Balll Bear Bearin ing) g)

Table 5. Recommended Bearing End Play for Tapered Roller Bearings Used in In-Line applications

Recommended End Play

26

Model Number SP114P Series

mm. 0.23 - 0.30

inches 0.009 - 0.012

SP214P Series

0.23 - 0.30

0.009 - 0.012

SPE214P Series

0.23 - 0.30

0.009 - 0.012

SP214OP Series

0.23 - 0.30

0.009 - 0.012

SP314P Series

0.23 - 0.30

0.009 - 0.012

SPE314P Series

0.23 - 0.30

0.009 - 0.012

SP314OP Series

0.23 - 0.30

0.009 - 0.012

SP314 14IL IL Seri rie es

n/a n/ a (B (Ball Bea eari rin ng) n/a (B (Bal alll Be Beari ring ng))


n/a n/ a (Ba (Ball ll Be Bear arin ing) g) n/ n/a a (B (Bal alll Bea Beari ring ng))


n/a n/ a (Ba (Ball ll Be Bear arin ing) g) n/ n/a a (B (Bal alll Bea Beari ring ng)) Power Take-off Service Manual #1022763



Filling the Main Bearing Beari ng Cavity during initial assembly ass embly.. (Refer to BOM and Twin Twin Disc Power Pow er Take-Off Take-Off Reference Refer ence Listing on p revious p revious pages.) Grease Lubrication: Hand-pack the bearings before assembly. Hand-packing Hand-packing requires that the roller elements and bearing races be coated with wi th grease. After assembly, assembly, add grease through the grease fitting until grease escapes from the outboard labyrinth seal all around the shaft. Do Not Overfill. Always rotate the shaft while adding grease to the bearing cavity cavit y. Oil Lubrication SP214OP Series (such as SP214P125): Fill with oil through the breather br eather hole at the top of the bearing carrier until the t he oil level reaches the bottom of the oil level plug hole in the side of the bearing carrier. Oil Lubrication SP314OP Series (such as SP314P123 & SP214P127): Oil is supplied through a hose connected to the (orifice) fitting at the top of the bearing carrier. carrier. Oil is supplied whenever the engine is running. Oil drains from the bearing carrier through a hose connected at the bottom of the bearing carrier. carr ier.

Filling the Main Bearing Cavity during periodic maintenance. Refer to the information contained in the Maintenance section of this manual.

Engagement force on the operating shaft Table 6. Torque at operating shaft to engage clutch Model

Peak Torque on Operating Shaft Nm

Lb.-Ft.

SP114 Series

295 - 391

218 - 289

SPE114 Series

295 - 391

218 - 289

SP214 Series

295 - 391

218 - 289

SPE214 Series

295 - 391

218 - 289

SP314 Series

295 - 391

218 - 289

SPE314 Series

295 - 391

218 - 289

RFD214 Series

332 - 440

245 - 325

RFD314 Series

295 - 391

218 - 289


27



PTO Deflection PTO deflection due to loads imposed by the application should not exceed 0.254 mm (0.010 in.). Deflection should be measured at the support plate pilot with the dial dial indicator base mounted on a rigid part of the engine. See the illustration in i n Installation Tips in the Installation section of this manual.

28




Twin Disc PTO Support Plate Specifications Twin Disc, Inc. requires that a support plate be used with SP214 and SP314 Series models used in side-load applications and recommends that a support plate be used for certain in-line applications. (angle to first hole)

D

C

(radius)

(Holes)

E (Qty.) F (dia.)

B

(diameter)

A

(diameter)

G

Shim to within 0.12 cm. (0.005 in.) 43.18 cm. (17.0 in.)

Figure 2. Typical Support Plate Illustration Table 7. Support Plate Dimensions A Bore Dia.

B Bolt +.127/.025mm Circle (Dia.)

PTO Model

C Radius

D Degree

(+.005/+.001”)

SP214P, SPE214P, SP214IL, SP314P 190.50 mm. 225.43 mm. 127.0 mm. SPE314P, SP314OP (7.50 in.) (8.875 in.) (5.0 in.) SP314IL (SP314P108 & SP314P111) 190.50 mm. 225.43 mm. 139.70 mm. SP214OP (8.875 in.) (7.50 in.) (5.50 in.) SP314IL(SP314P121 & 200.01 mm. 234.95 mm. 136.65 mm. (7.875 in.) (9.25 in.) (5.38 in.) SP314P125)

E F G Recommended Hole Hole Quantity Diameter Thickness

30°

6

17/32 in.

12.70 mm. (0.500 in.)

45°

6

17/32 in.

12.70 mm. (0.500 in.)

30°

6

0.679 in.

12.70 mm. (0.500 in.)

SP314SB

238.15 mm. 285.75 mm. 162.05 mm. (9.376 in.) (6.38 in.) (11.25 in.)

**

8

17/32 in.

19.05 mm. (0.750 in.)

SP314SB (SP314S117)

266.73 mm. 304.80 mm. 167.64 mm. (10.501 in.) (12.00 in.) (6.60 in.)

**

8

0.679 in.

19.05 mm. (0.750 in.)

** Refer to assembly assembly drawing. drawing. Angular Angular offset offset of the through through holes must be calculated calculated with respect respect to orientation of sheave housing. Holes are equally spaced.

Note: One possible mounting method provides installation ease. Use angle iron to couple the support suppor t plate to the engine frame. Power Take-off Service Manual #1022763

29



Wear Limits

Table 8. Wear Limits - Bearing Carrier Bore Dimensions (Refer to BOM for the Bearing Carrier/Housing Part Number used i n your PTO)

Sheave Housing or Housing Part Number Bearing Carrier Part Number

30

Bore Dim. A (Maximum) mm.

inches

Bore Dim. B (Maximum) mm.

inches

Illustration Number

A7502

1 6 0 . 0 2 0 6 .3 0 0

1 5 2 .4 5 1

6 .0 0 2

5

8424

127.025 5. 5 .0 0 1

n/a

n/a

3

8424F

127.025 5. 5 .001

n/a

n/a

3

8431

127.025 5. 5 .0 0 1

n/a

n/a

3

10 15764

1 9 0 .0 3 0 7 .4 8 1 5

n/a

n/a

6

02018611

140.040 5. 5.5134

n/a

n/a

3

020 3601 2

160.025 6. 6.3002

n/a

n/a

6

A5194

1 5 2 . 4 2 5 6 .0 0 1

n/a

n/a

1

A5194E

1 5 2 .4 2 5 6 .0 0 1

n/a

n/a

1

A5195

1 5 2 . 4 2 5 6 .0 0 1

n/a

n/a

1

982 7

1 5 2 . 4 2 5 6 .0 0 1

n/a

n/a

8

10157 68

1 6 0 .0 2 3 6 .3 0 0 0

n/a

n/a

7

10165 18

1 6 0 . 0 6 5 6 .3 0 2

1 6 0 .0 6 5

6 .3 0 2

4

1016518A

160.065 6.302

1 6 0 .0 6 5

6 .3 0 2

4

10191 24

1 6 0 .0 2 5 6 .3 0 0 2

n/a

n/a

7

020360 20

150.025 5.9065

n/a

n/a

7

020185 97

180.040 7.0882

n/a

n/a

2




A

A 1

2

A

A

3

4 B

A A 5 6 B

8

7 A

A

A

Figure 3. Housing/Bearing Carrier Illustrations


31



Table 9. Wear Limits - Shaft Dimensions (Refer to BOM for the Clutch Shaft Part Number used in your PTO)

Shaft Part Number

Pilot Bearing Journal (Min.)

Main Bearing Journal Dim. A (Min.)

mm.

mm.

inches

mm.

inches

3.752

95.3008

3.752

92.075

3.625

9

inches

Main Bearing Journal Dim. B (Min.)

Front & Rear Seal Journals (Min.)

mm.

Illus. Number

inches

A5166

34.9987 1.3779

95.3008

A5190

34.9987 1.3779

73.8556 2.9077

n/a

n/a

n/a

n/a

2

A5190AO

34.9987 1.3779

73.8556 2.9077

n/ a

n/a

n/a

n/a

2

A5190B

34.9987 1.3779

73.8556 2.9077

n/a

n/a

n/a

n/a

2

A5190BZ

34.9987 1.3779

73.8556 2.9077

n/a

n/a

n/a

n/a

2

A5190CQ

34.9987 1.3779

73.8556 2.9077

n/a

n/a

n/a

n/a

2

A6515B

34.9987 1.3779

95.3008

3.752

n/a

n/a

n/a

n/a

2

A6515N

34.9987 1.3779

95.3008

3.752

n/a

n/a

n/a

n/a

2

A6515R

34.9987 1.3779

95.3008

3.752

n/a

n/a

n/a

n/a

2

A6515T

34.9987 1.3779

95.3008

3.752

n/a

n/a

n/a

n/a

2

A6515U

40.0000 1.5749

95.3008

3.752

n/a

n/a

n/a

n/a

2

A6619B

44.9987 1.7716

95.3008

3.752

n/a

n/a

n/a

n/a

2

A6619K

44.9987 1.7716

95.3008

3.752

n/a

n/a

n/a

n/a

2

A6619Q

44.9987 1.7716

95.3008

3.752

n/a

n/a

n/a

n/a

2

B5027A

34.9987 1.3779

95.3008

3.752

95.3008

3.752

n/a

n/a

1

B5027AQ

29.9593 1.1795

95.3008

3.752

95.3008

3.752

n/a

n/a

1

B5027AR

34.9986 1.3779

95.3008

3.752

95.3008

3.752

n/ a

n/ a

1

B5027AS

34.9986 1.3779

95.3008

3.752

95.3008

3.752

n/a

n/a

1

B5027AV

34.999

1.3779

95.301

3.752

95.301

3.752

n/a

n/a

1

B5027AW

34.9987 1.3779

95.3008

3.752

95.3008

3.752

n/a

n/a

1

B5027AX

34.9987 1.3779

95.3008

3.752

95.3008

3.752

n/a

n/a

1

B5027AZ

44.9987 1.7716

95.3008

3.752

95.3008

3.752

n/a

n/a

1

B5027B

34.9987 1.3779

95.3008

3.752

95.3008

3.752

n/ a

n/a

1

B5027BA

34.9987 1.3778

95.3008

3.752

95.3008

3.752

n/ a

n/ a

1

B5225

45.0037 1.7718

95.3008

3.752

n/ a

n/ a

n/a

n/a

2

B5225B

45.0037 1.7718

95.3008

3.752

n/ a

n/ a

n/a

n/a

2

B5225D

45.0037 1.7718

95.3008

3.752

n/ a

n/ a

n/a

n/a

2

B6247

not used

95.2779

3.7511

90.018*

3.544*

8

1015786

not used

90.013

3.5438

n/a

n/a

71.37**

2.810**

3

1016185

not used

90.013

3.5438

n/a

n/a

n/a

n/a

4

1016521

not used

90.030

3.5445

90.030

3.5445

n/ a

n/ a

5

1016522

not used

90.030

3.5445

90.030

3.5445

n/ a

n/ a

5

1021911

44.9987 1.7716

99.9973 3.9369

n/ a

n/a

n/a

n/a

2

1021912

44.9987 1.7716

99.9973 3.9369

n/a

n/a

n/a

n/a

2

1021913

34.9910 1.3776

79.9973 3.1495

n/a

n/a

n/a

n/a

10

1022209

not used

90.021

3.5441

88.88

3.499

6

02035496

34.9910 1.3776

79.9973 3.1495

n/ a

n/ a

n/a

n/a

10

02035709

34.9910 1.3776

99.9973 3.9369

n/ a

n/ a

n/a

n/a

7

02036022

not used

n/a

n/a

90.021

3.5441

95.2881 3.7515

120.0125 4.7249 80.0125 3.1501

5

* Front Bearing Journal ** Output Bearing Journal

32




1

Small Shoulder

2

Large Shoulder

3

4

5

Figure 4. Clutch Shaft Illustrations Power Take-off Service Manual #1022763

33



6

7

8

9

10

Figure 4. Clutch Shaft Illustrations (continued) 34




Torque Values for Fasteners Note: The tables below provide information for several different types of fasteners: U.S. Standard Fine and Coarse Thread Capscrews, Bolts, and Nuts; Metric Coarse Thread Capscrews, Bolts, and Nuts; Tapered Pipe Plugs (with thread lubricant); Straight Threaded Tube Fittings, Hose Fittings, and O-ring Plugs. Be sure to use the appropriate table to obtain the correct torque value.

threads ds and beari bearing ng face to be lubric lubricated ated with light oil Note: All threa film prior to assembly assembly..

Table 10. U.S. Standard Fine and Coarse Thread Capscrews, Bolts, and Nuts

Thread Diameter

SAE Grade 5 N-m

SAE Grade 8

lb.-ft.

N-m

lb.-ft.

1/4

8 - 11

6-8

14 - 16

10 - 12

5/16

18 - 23

13 - 17

27 - 33

20 - 24

3/8

34 - 39

25 - 29

47 - 56

35 - 41

7/16

50 - 58

37 - 43

75 - 88

55 - 65

1/2

81 - 95

60 - 70

113 - 132

83 - 97

9/16

111 - 133

82 - 98

163 - 190

120 - 140

5/8

163 - 190

120 - 140

224 - 264

165 - 195

3/4

278 - 332

205 - 245

400 - 468

295 - 345

7/8

447 - 529

330 - 390

637 - 746

470 - 550

1

671 - 793

495 - 585

969 - 1132

715 - 835

1 1/8

834 - 997

615 - 735

1376 - 1607

1015 - 1185

1 1/4

1152 - 1356

850 - 1000

1864 - 2203

1375 - 1625


35



Table 11. Metric Coarse Thread Capscrews, Bolts, and Nuts Nuts

Property Class 8.8

Thread Size

Property Class 10.9

Property Class 12.9

N-m

lb.-ft.

N-m

lb.-ft.

N-m

lb.-ft.

M6

9 -10

6.5 - 7.5

12 - 14

9 - 10

14 - 16

10 - 12

M8

21 -25

16 - 18

31 - 35

23 - 26

34 - 40

25 - 29

M10

43 - 49

32 - 36

60 - 68

44 - 51

70 - 80

51 - 59

M12

74 - 86

55 - 63

104 - 120

77 - 88

121 - 139

89 - 103

M16

179 - 205

132 - 151

256 - 294

189 - 217

298 - 342

219 - 253

M18

247 - 281

182 - 208

350 - 398

258 - 294

412 - 469

304 - 346

M20

348 - 400

257 - 295

493 - 567

364 - 418

581 - 669

429 - 493

M22

475 - 541

351 - 399

669 - 762

494 - 562

792 - 902

584 - 666

M24

603 - 693

445 - 511

848 - 976

626 - 720

1000 - 1150

737 - 848

M30

967 - 1113 714 - 820

1674 - 1926

1235 - 1421

2000 - 2301 1475 - 1697

Table 12. Tapered Pipe Plugs (with thread lubricant)

NPTF Size (in.)

36

In Cast Iron or Steel N-m (+ or - 5%)

In Aluminum

lb.-ft. (+ or - 5%) N-m (+ or - 5%)

lb.-ft. (+ or - 5%)

1/6-27

11.5

8.5

7.5

5.5

1/8-27

14

10.5

9

6.5

1/4-18

34

25

21.5

16

3/8-18

36.5

27

23

17

1/2-14

68

50

40.5

30

3/4-14

73

54

46

34

1-11 1/2

108

80

68

50

1 1/4-11 1/2

115

85

75

55

1 1/2-11 1/2

115

85

75

55




Table 13. Straight Threaded Tube Tube Fittings, Hose Fittings, and O-ring Plugs

Nominal Nominal N-m (+ or 5%) lb.-ft. (+ or 5%) Thread Thread N-m (+ or - 5%) lb.-ft. (+ or - 5%) Diameter Diameter 5/16

5

3 .5

M10X1.0

12

9

3/8

11.5

8.5

M12X1.5

16

12

7/16

16

12

M14X1.5

20

15

1/2

20

15

M16X1.5

24

18

9/16

24.5

18

M18X1.5

34

25

5/8

24.5

18

M22X1.5

54

40

11/16

34

25

M27X2.0

75

55

3/4

40.5

30

(in iron)

7/8

54

40

M27X2.0

75

55

1 1/16

75

55

(in aluminum)

1 3/16

88

65

M33X2.0

88

65

1 1/4

88

65

M42X2.0

108

80

1 5/16

108

80

M48X2.0

108

80

1 3/8

108

80

1 5/8

108

80

1 7/8

108

80

2 1/2

108

80


37



NOTES

38


Installation


Installation

Installation Tips

Tapered Roller Bearing Adjustment 1.

Tap aper ered ed rol rolle lerr bear bearin ing g end end play play adj adjus ustm tmen entt is di diff ffer eren entt in SP1 SP114 14,, SPE114, SP214, SPE214, SP314 and SPE314 Series Power TakeOffs for side load applications than than it is for in-line applications . Insure that the adjustment is correct for the application.

2.

All SP1 All SP114 14,, SPE SPE1 114 14,, SP2 SP214 14,, SPE SPE21 214, 4, SP SP31 314 4 and and SP SPE3 E314 14 Se Seri ries es Power Take-Offs are manufactured at Twin Disc’s factory with the tapered roller bearing end play adjusted for side-load application .

3.

RFD214I RFD21 4IL L an and d RFD3 RFD314 14IL IL Se Seri ries es Po Powe werr Tak Takee-Of Offs fs hav have e ball ball-t -typ ype e main main bearings. No adjustment is required.

4.

SP314SB SP314 SB Ser Series ies Pow Power er Tak ake-O e-Off ffs s ha have ve rol roller ler-ty -type pe mai main n bea bearin rings gs.. No No adjustment is required.

5.

Tap apere ered d rol roller ler be beari aring ng en end d pla play y in in SP1 SP114 14,, SPE1 SPE114 14,, SP21 SP214, 4, SPE SPE21 214, 4, SP314 and SPE314 Series Se ries Power Take-Offs Take-Offs used for in-line applications must be adjusted to specifications shown in Tapered Roller Bearing Beari ng in the the Description and Specifications section of this manual. End Play in a.

For rebuilt or remanufactured PTOs: Adjust the end play to proper specifications for in-line applications at the time of assembly. Follow instructions contained in the Assembly section of this manual.


39

Installation


b.

For SP114, SPE114, SP214, SPE214, SP314 and SPE314 Series PTOs manufactured manufactur ed in Twin Twin Disc’s factory: Readjust the factory end play setting prior to installation on the engine for in-line applications. Most SP114, SPE114, SP214, SPE214, SP314 and SPE314 Series Power Take-Offs Take-Offs have a tag attached to the housing which contains instructions that must be followed. Readjust the end play setting as instructed.

Figure 5. Factory Instruction Tag Tag for End Play Adjustment

Ali A lig gnmen ent t 6.

The flflywh The whe eel an and flflyw ywh heel hou hous sin ing g ali alig gnm nment ent must be within specifications. specific ations. Perform the measurements shown in Prior To Installation in this Installation section.

7.

Avoid Avoi d exc exces essi sive ve mi misa salilign gnme ment nt be betw twee een n the the en engi gine ne an and d PTO PTO.. Chec Check k the following if abnormal wear of parts exists: a.

Excess Exce ssiv ive e loa loads ds te tend nd to de defl flec ectt par parts ts to wh whic ich h PTOs PTOs ar are e mou mount nted ed.. A dial dial indicator indicator can be mounted on a rigid rigid part of the engine or independently on the foundation to determine deflection under actual operating conditions. See Support Plate, Belt or chain tension/Allowable Side Load Pulls and Deflection Caused by Side Load Pulls in this Installation section and information contained in the Description and Specifications section regarding these issues

b.

Readin Read ings gs ta take ken n bef befor ore e the the dr driv ive e is is ins insta talllled ed wi with th th the e eng engin ine e standing still and when under operating conditions (with the engine off and all belts, chains, driveshafts and/or support plates attached and secured with bolts torqued to specifications) will indicate the extent of deflection. In no case should the deflection exceed 0.254 mm. (0.010 in.) (T.I.R.) (T.I.R.) at the bearing carrier.

w ith the engine Note: The dial indicator should never be applied with running. This is unsafe and could result in damage to the dial indicator. 40


Installation


8.

In a u-jo u-joint int-t -type ype ins instal tallat lation ion,, to to rea realiz lize e the the lon longe gest st po poss ssibl ible e life life of the power take-off bearings, the best possible alignment must be maintained between the center line of the power take-off shaft and the center cent er line of the driven unit shaft. See information contained in Alignment-U-JointType Installation in this Installation section.

9.

In si side de-l -loa oad d ins insta tallllat atio ions ns,, ali align gnme ment nt be betw twee een n the the dr driv ive e R and drive N pulleys must be carefully established and maintained. See Position and Measure Alignment of the Sheave in this Installation section.

Drive Dri ve Ri Ring ng 10.

The drive ring must be properly installed. See information informati on in Drive Ring Installation in this Installation section. section.

Pilo Pi lott Be Bear arin ings gs 11.

Ball-type Ball-t ype pilo pilott bearin bearings gs and and Rolle Roller-t r-type ype pil pilot ot bear bearing ings s must must be insta installe lled d properly. See Ball-Type Pilot Bearing Installation or Roller-Type Pilot Bearing Installation in this Installation section.

Support Plate 12.. 12

When mou When mounti nting ng the the eng engine ine an and d Power Power Take Of Offf in the the mach machin ine, e, a customer-supplied customer-supp lied support plate may be required to support the output end of the pto housing. See the information about customer-supplied support plates, the Twin Disc Power Take-Off Reference Listing and Twin Disc Support Plate Specifications contained in the Description and Specifications section of this manual.

Failure to follow this requirement may result in damage to the power take off or the engine flywheel housing.

Belt or chain tension/Allo tension/Allowable wable Side Load Pulls 13.

Avoid exces excessive sive tighte tightening ning of belts or chains chains.. See the Allowable Side Load tables in this Installation section.

14.

Avoid exce Avoid excessi ssivel vely y loose loose bel belts ts or or chain chains. s. Belt Belt tensi tension on or or chain chain adj adjust ustmen mentt that is below specifications can cause belt/chain “whip” during operation, resulting in bearing failure and shortened power take-off service life.


41

Installation


Deflec Def lecti tion on Cau Caused sed by Sid Side e Lo Load ad Pu Pull lls s 15.. 15

Powerr Tak Powe Takee-Of Offf defl deflec ecti tion on due due to loa loads ds im imp p osed by the application should not exceed specified limits shown in PTO Deflection in the Description Descriptio n and Specifications section. Deflection Deflecti on should be measured at the support plate location on the power take-off (or main bearing area of the housing if no support plate is used).

Figure 6. Determining Deflection While Applying Side Loads

The dial indicator should not be applied while the unit is operating. This could result in damage to the dial indicator. indi cator.

Lubrication 16.

42

Veri erify fy that that the PTO is prop properly erly lub lubrica ricated ted prio priorr to sta starti rting ng the the engi engine. ne. a.

The thro The throwo wout ut col colla larr is lub lubri rica cate ted d by gre greas ase e thro throug ugh h a grea grease se fit fitti ting ng on the outside of the main housing.

b.

SP214O SP21 4OP P and and SP SP31 314O 4OP P Ser Serie ies s ma main in be bear arin ings gs ar are e lub lubri rica cate ted d by oil contained in the main mai n bearing cavity.


Installation


c.

All oth All other er SP SP1 114 14,, SPE SPE1 114 14,, SP2 SP214 14,, SPE SPE21 214, 4, SP SP31 314, 4, SP SPE3 E314 14,, SP314SB, RFD214 and RFD314 Series main bearings are lubricated by grease through a grease fitting in the housing or bearing carrier.

d.

The se seal aled ed-fo -forr-lif life e pi pilot lot be bear aring ing sh shou ould ld no nott be lu lubri brica cate ted d du durin ring g service.

e.

Pilot be Pilot bear arin ings gs de desig signe ned d for for pe perio riodi dic c lu lubr brica icati tion on mus mustt be gr grea ease sed. d. See Se e Lubrication in the Maintenance section for more information. Improper lubrication will result in premature failure of components. DO NOT OVERGREASE!

Referenc e Listing and Filling the Refer to the Twin Disc Power Take-Off Reference Main Bearing Cavity in the Description and Specifications sec tion, Lubrication in the Maintenance section and Engineering Drawings near the back of this manual.

Clutch Adjustment 17.

Verif erify y that that the the clut clutch ch is is adjus adjusted ted acc accord ording ing to the the proc procedu edure re outl outline ined d in Clutch Adjustment in the Maintenance section. Failure to do so will result in premature clutch wear and failure. Note: Twin Disc will not be responsible for any damage or injury resulting from improper adjustment and/or lubrication. This includes any accessory drives and loads.

Hand Han d Le Lever ver Po Posit sitio ion n 18.. 18

Proper han Proper hand d lever lever posi positio tion n is requi required red to to obtai obtain n long long serv service ice life life of of the throwout bearing. See Hand Lever Position for Twin Disc Power Take-Offs and Model SPE114, SPE214 and SPE314 Arm Adjustment Procedure in this Installation section.

Airr En Ai Enga gage geme ment nt Me Mech chan anis isms ms 19.. 19

Air eng engag ageme ement nt mech mechan anism isms s must must be insta installe lled d and adju adjust sted ed prop properl erly y for proper clutch actuation and long service life of the PTO. No preload on the throwout bearing can exist either in the fully-engaged or fullyreleased positions, and the air mechanism must be engineered and installed to provide proper engagement force and stroke to properly engage and disengage the clutch. See Setting Up Air Engagement on Twin Disc Power Take-Offs in this Installation section.


43

Installation


Prior to Installation (Ref: SAE J1033 and J617) Refer to Identifying the SAE Housing Size in the Description and Specifications section of this manual.

Most Twin Twin Disc products mount directly onto the flywheel of the engine. Flywheel-to-driven Flywheel-to-dr iven component interference is possible due to mismatch of components or other reasons. Therefore, engine crankshaft endplay as well as flywheel alignment check must be made before the driven component, the Power Take-Off, is installed. After installation of the Power Take-Off, crankshaft end play should be measured again. End play at the second measurement should be the same as the first. A difference in these two end play measurements could be an indication of interference. Consequently, the Power Take-Off should be removed and the source of interference found and corrected. Twin Disc will not be responsible for system damage caused c aused by engine to Twin Disc match-up regardless of the cause of interference. This engine crankshaft end play check is considered mandatory. Note: All mea measur sureme ements nts mus mustt be tak taken en wit with h the eng engine ine or mot motor or mounted on its supports after the flywheel and housing have been thoroughly cleaned.

1.

44

Measur Meas ure e and and re reco cord rd th the e eng engin ine e cra crank nksh shaf aftt or or mot motor or sh shaf aftt end endpla play y usi using ng a dial indicator. Record this value, as it will be used later._______ la ter._______


Installation


2.

Bolt the Bolt the ind indic icat ator or to to the the flyw flywhe heel el so so the the indi indica cato torr is per perpe pend ndic icul ular ar to to the the flywheel housing face and the indicator stem rides on the flywheel housing face.

Figure 7. Checking Flywheel Housing Face

3.

Rotate the sh Rotate shaft aft thr throu ough gh on en entir tire e rev revolu olutio tion n and and not note e the the ru runo nout. ut. The total indicator reading readin g (T.I.R.) (T.I.R.) must not exceed: SAE SA E #0 #0 Ho Housing 0.41 mm mm. (0 (0.0 .01 16 in.) SAE SA E #1 #1 Ho Housing 0.30 mm mm. (0 (0.0 .01 12 in.) SAE SA E #2 #2 Ho Housing 0.2 .28 8 mm mm. (0 (0.0 .01 11 in in.) Note: The flywheel and crankshaft of the engine must be held against either the front or rear of the crankshaft thrust bearing while the total indicator sweep (T.I.R.) is being made.


45

Installation


4.

Readju Read just st the the in indi dica cato torr so th the e ste stem m ride rides s on th the e pilo pilott bore bore of of the the flyw flywhe heel el housing face.

Figure 8. Checking Flywheel Housing Bore

5.

Rotate Rota te the the sha shaft ft thr throu ough gh one one ent entir ire e revo revolu luti tion on an and d note note the the ru runo nout ut.. The The total indicator reading rea ding (T.I.R.) (T.I.R.) should shoul d not exceed: SAE SA E #0 #0 Ho Housing 0.41 mm mm. (0 (0.0 .01 16 in.) SAE SA E #1 #1 Ho Housing 0.30 mm mm. (0 (0.0 .01 12 in.) SAE SA E #2 #2 Ho Housing 0.2 .28 8 mm mm. (0 (0.0 .01 11 in in.)

6.

Remove Remov e the the ind indic icat ator or ba base se fr from om th the e fly flywhe wheel el an and d bol boltt itit to to the the fl flywh ywhee eell housing face. Position Positi on the indicator stem so that it rides where the drive ring will set on the flywheel face.

Figure 9. Checking Driving Ring Surface of Flywheel

7.

Rotate Rota te the the sha shaft ft thr throu ough gh one one ent entir ire e revo revolu luti tion on and and not note e the the face face run runou outt of the flywheel. The total indicator i ndicator reading (T.I.R.) must not exceed 0.01mm. (0.0005 in.) per 25.4 mm. (per inch) i nch) of flywheel diameter. Note: The flywheel and crankshaft of the engine must be held against either the front or rear of the crankshaft thrust bearing while the total indicator sweep (T.I.R.) is being made.

46


Installation


8.

Readjust Readju st th the e ind indica icator tor ste stem m so so itit rid rides es on the dr drivi iving ng rin ring g pilo pilott bore bore of the flywheel.

Figure 10 . Checking Driving Ring Pilot Bore of Flywheel

9.

Rotate Rota te th the e sha shaft ft thr throu ough gh on one e ent entir ire e rev revol olut utio ion n and and no note te th the e dri drivin ving g rin ring g bore eccentricity. The total indicator reading (T.I.R.) must not exceed 0.13 mm. (0.005 in.).

10.. 10

Adjust Adj ust the the indic indicato atorr stem stem so tha thatt it ride rides s on the the pilo pilott beari bearing ng bore bore cav cavity ity..

Figure 11. 11. Checking Pilot Bearing Bore of Flywheel

11.

Rotate the Rotate the shaf shaftt throug through h one one entire entire revo revolu lutio tion n and and note note the pilo pilott bearin bearing g bore eccentricity. The total indicator reading (T.I.R.) must not exceed 0.13 mm. (0.005 in.). Note: Eccentricity between the driving ring pilot bore and the pilot bearing bore must not exceed 0.20 mm. (0.008 in.).


47

Installation


Drive Ring Installation Refer to information regarding cleaning cle aning and inspection of the drive ring in the Cleaning and Inspection section of this manual before proceeding. 1.

Clean Cle an th the e driv drive e ring ring an and d flyw flywhe heel el of an any y dirt dirt or de debr bris is as ne nece cess ssar ary y.

2.

Use croc Use crocus us clo cloth th or or emer emery y clot cloth h to rem remov ove e any any surf surfac ace e impe imperf rfec ecti tion ons s such as nicks, burrs, and sharp edges on o n the O.D. or the surface that t hat will be mounted against the flywheel face.

3.

Use croc Use crocus us clo cloth th or or emer emery y clot cloth h to rem remov ove e any any surf surfac ace e impe imperf rfec ecti tion ons s such as nicks, burrs, and sharp edges in the I.D. of the flywheel pilot bore or on the face that will be in contact with the drive dri ve ring.

4.

Position Positi on th the e driv drive e rin ring g aga again inst st th the e flyw flywhe heel el,, pilo pilote ted d in th the e mou mount ntin ing g bor bore, e, and secure with eight hex-head capscrews. Torque Torque the capscrew cap screw to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section of this manual.

Drive ring attachment screws must be grade 8 per SAE J429. Do not use substitutes.

48


Installation


Ball-Type Pilot Bearing Installation Refer to the Twin Disc Power Take-Off Reference Listing List ing in the Description and Specifications section, sectio n, the exploded views in the Illustration section and Engineering Drawings near the back of this manual. Refer to information regarding cleaning and inspection in the Cleaning and Inspection section of this manual before proceeding. 1.

Sup Su ppo porrt th the ou outp tpu ut en end of of the the cl clu utc tch h sh shaf aft. t.

2.

Make su Make sure re the the clu clutc tch h shaf shaftt end end stub stub is is free free of sur surfa face ce im impe perf rfec ecti tion ons s such as nicks, burrs, and sharp edges. Remove them using fine emery cloth or crocus cloth.

3.

Tap the pil pilot ot be beari aring ng on onto to th the e clu clutch tch sh shaf aft. t. The fro front nt fa face ce of the pil pilot ot bearing should be positioned flush with wi th the input end of the clutch shaft. Tap or apply force to only the inner race of the bearing. Note: Tap or press only on the inner race of the bearing. Any impact on the outer race or balls will damage the bearing, resulting in shortened service life or premature failure.

Do not damage the seal of the pilot bearing. A damaged seal renders the pilot bearing destroyed and it must be replace with a new bearing. Front of Pilot Bearing Flush with End of Clutch Shaft

Clutch Shaft Pilot Bearing (Ball-type shown)

Figure 12. Position of the Ball-Type Ball-Type Pilot Bearing on the Shaft


49

Installation


Roller-Type Pilot Bearing Installation Some Twin Disc Power Take-offs Take-offs are designed with roller-type roller- type pilot bearings. All of of the the roller-typ roller-type e bearings bearings available from Twin Disc are the separa separate te race race type, i.e. the inner race is removable rem ovable from the outer race and seal assembly assem bly.. Due to its design configuration, axial alignment of the inner and outer races is extremely important. The information and instructions below will assure proper bearing mounting. Instructions for assembly.

Refer to the Twin the Twin Disc Power Take-Off Reference Listing i n the Description and Specifications section, the exploded views in the Illustration section and near ar the back of this manual. Engineering Drawings ne Refer to information regarding cleaning and inspection in the Cleaning and Inspection section of this manual before proceeding. 1.

Positio Posit ion n the the pt pto o on on the the be bed d of of a pr pres ess s with with th the e pil pilot ot be bear arin ing g end end up an and d the output end of the clutch shaft resting firmly on a solid support. standi ng on the output end of the shaft. Note: The PTO must be standing

The power take-off must be securely supported as it stands on the end of the shaft so it does not tip or fall fa ll over.

Use several 4” x 4” blocks or other means of insuring the PTO PTO does not tip or fall over.

Output end of the shaft MUST rest and be in contact with a solid support (Press bed).

Figure 13. Support the pto standing on the end of the shaft

50


Installation


2.

Press the Press the pi pilo lott bear bearin ing g inne innerr race race on the the cl clut utch ch sha shaft ft so so it is flu flush sh wit with h the the input end of the shaft.

3.

Carefully measure dimension (a) . Record the measurement.

4.

Refer to the Roller-Type Bearing Dimensions ta table ble in the Description and Specifications section of this manual. Subtract the appropriate roller bearing nominal width (c) from measurement (a). This will determine the position of the pilot bearing outer race in the flywheel bore bor e (dimension b).

a - c = b (pilot bearing outer race position) 5.

Installll the pil Insta pilot ot be beari aring ng ou outer ter ra race ce in the fly flywhe wheel el an and d pos positi ition on it at dimension (b) as shown.

Pilot Bearing Inner Race

Inner race flush with end of shaft

Flywheel Housing Face

a Flywheel

b Pilot Bearing outer race

Figure 14. Install Pilot Bearing-Roller Type


51

Installation


PTO Installation to Engine or Driving Member Refer to the Twin Disc Power Take-Off Reference Listing Lis ting in the Description and Specifications section, the exploded views in the Illustration section and Engineering Drawings near the back of this manual. Refer to information regarding cleaning and inspection in the Cleaning and Inspection section of this manual before proceeding. 1.

Clean th Clean the e PTO PTO ho housi using ng fla flang nge, e, fly flywhe wheel el ho housi using ng fla flang nge, e, an and d pilo pilott bea bearin ring g bore of any debris.

2.

Make sur Make sure e the the hous housin ing g flan flange ge and and fly flywh whee eell hous housin ing g flan flange ge are are fre free e of surface imperfections such as nicks, burrs, and sharp edges. Remove R emove them using fine emery cloth or crocus cloth.

3.

Instal Inst alll a mi minim nimum um of thr three ee gu guid ide e stu studs ds in the fl flywh ywhee eell hou housi sing ng,, loc locat ated ed o approximately 120 apart. Using a suitable hoist, position the PTO on the guide studs and slide it against the flywheel housing, housi ng, carefully aligning the pilot bearing with the pilot bearing bore in the flywheel and the teeth of the friction plates (6) with the drive ring (5).

Do not force the PTO unit onto the engine. If any resistance is noted, repeat re peat the clutch plate p late centering procedure either in the clutch assembly or final assembly information of the Assembly section to align and center the friction plates so they mesh mesh properly with the teeth of the drive ring.

4.

Secure Secu re th the e PTO PTO hou housi sing ng to th the e fly flywh whee eell hous housin ing g wit with h (12 (12 or or 16) 16) he hexxhead capscrews. Torque Torque the capscrew to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section of this manual. Note: PTO housing to flywheel housing attachment screws must be grade 5 or better.

5.

Rap the Rap the ou outp tput ut en end d of of the the ma main in sh shaf aftt wit with h a so soft ft ha hamm mmer er to re remo move ve an any y preload on the main bearings and/or pilot bearing.

This step must not be omitted. Bearing failure may result.

52


Installation


6.

Measur Meas ure e the the cr cran anks ksha haft ft en endp dpla lay y aga again in.. The The mea measu sure reme ment nt mu must st be th the e same value as recorded from step 1 under Prior To Installaton . Locate and correct the source of preload if the endplay is not the same value.

Engine and/or PTO failure will result from any excessive preload on components.

All exc except ept SP3 SP314S 14SB B mo model dels s: (SP314SB skip to step 12) 7.

Installll the Insta the ke key y (34 (34)) on on the the outp output ut en end d of of the the clu clutc tch h sha shaft ft (33 (33)) and and ins insta tallll the drive sheave, chain sprocket, or u-joint flange as the application requires.

8.

Align the sheave sheaves s as describ described ed in Position and Measure Alignment of the Sheave in this section.

Refer to the Twin Disc Power Take-Off Reference Listing in the Description and Specifications section and Engineering Drawings towards the back of this manual.

9.

Instal Inst alll the the su supp ppor ortt pla plate te if it is to be us used ed.. Re Refe ferr to to sup suppo port rt pl plat ate e information in Twin Disc PTO Support Plate Specifications in the Description and Specifications section. Install eight M12 x 1.75 pitch 8.8 Property Class quality capscrews per ISO 898-1. Torque Torque to 80 Nm. (59 lb.-ft.). Note: Verify proper shimming and alignment of the support plate.

10.

Installl and Instal and tight tighten en the the belt belts s to the man manufa ufactu cturer’ rer’s s speci specifica ficatio tions, ns, bei being ng sure that belt tension tensi on does not cause excessive deflection. (Refer to information in the Description and Specifications section and Allowable Side Load Pulls in this section to measure and assure that excessive deflection does not occur when the belts are tightened.)

11.

Install the hand lever assembly (53) as shown in the Hand Lever Position for Twin Disc Power Take-Offs and, if appropriate, the Model SPE114, SPE214 and SPE314 Arm Adjustment Procedure in this Installation section, and torque the hex head capscrew to 81 - 95 Nm (60 - 70 lb. ft.)


53

Installation


SP314SB models: 12.

Remove thr Remove three ee (onl (only) y) of of the the capsc capscrew rews s (48) (48) that that att attach ach the she sheave ave hou housin sing g (60) to the clutch housing (44). (44). Remove three that are about 120 degrees apart. Install three threaded thread ed guide pins in the holes to support the sheave housing as it is being removed.

13.

Remove Rem ove the rem remain aining ing cap capscr screws ews (48 (48)) and and remov remove e the the sheav sheave e hous housing ing..

14.. 14

Installll the Insta the shea sheave ve.. Use a hydr hydrau aulic lic powe powerr unit unit to prope properly rly pos positi ition on the the sheave.

Be sure to install the power unit so the force is directed through the shaft and not across any of the bearings. beari ngs. The bearings may be damaged, resulting in premature failure.

15.

Align the sheave sheaves s as describ described ed in Position and Measure Alignment of the Sheave in this section.

The driveR sheave must be aligned with the driveN dri veN pulley. Align to within 1/2 of one degree using a straight edge or “tight-cord” method.

The sheave housing must seat properly on the two dowel pins in the clutch housing.

16.. 16

54

Remove the thr Remove three ee guid guide e dowel dowels s and and repla replace ce with with the the rema remaini ining ng thr three ee hex head capscrews. Torque Torque the capscrews to the proper pr oper specifications given in Torque Values for Fasteners in the Description and Specifications section of this manual.


Installation


17.. 17

Mount the Mount the dial dial ind indica icator tor bas base e on a secur secure e locat location ion on the the PTO PTO hous housing ing.. Position the tip of the dial indicator indi cator on the sheave as shown. Set the dial indicator to zero. Mount Dial Indicator Base Securely

Measure at Three Locations

Figure 15. Measure Sheave Alignment

18.

Rotate the she Rotate sheave ave thr throug ough h one one compl complete ete rev revolu olutio tion n and and reche recheck ck accu accurac racy y with at least one other revolution. Read the total amount of dial indication sweep. Total Total runout must not exceed 0.254 mm. (0.010 in.) T.I.R. T.I.R. Mark the “high” spot as indicated when the dial indicator reaches its maximum progression point in the clockwise direction.

19.

Repeat at the oth Repeat other er two loc locati ations ons as sho shown, wn, mar markin king g the the “hi “high” gh” spo spott of of each. Total runout must not exceed 0.254 mm. (0.010 in.) T.I.R. T.I.R. readings s will normally be the same. If one is Note: All three reading significantly different from the other two, first recheck to assure an accurate reading was obtained. If the readings exceed the allowable limit, alignment of the sheave must be corrected to prevent failure.

Instal Ins talll the bel belts. ts. 20.. 20

Remo Re move ve th the e she sheav ave e hou housi sing ng as de desc scri ribe bed d abo above ve..

21.. 21

Inst In stal alll the the belt belts s loos loosel ely y in po posi siti tion on in in the the groo groove ves. s.


55

Installation


22.. 22

Reins Rei nsta tallll the the sh shea eave ve ho hous usin ing g as as des descr crib ibed ed ab abov ove. e.

23.

Tighten Tighte n the the belt belts s to to the the manu manufact facturer’ urer’s s spec specific ificatio ations, ns, bein being g sure sure that belt tension does not cause excessive deflection. (Refer to information in the Description and Specifications s section ection and Allowable Side Load Pulls in this section to measure and assure that excessive deflection does not occur when the belts are tightened.)

24.

Install the hand lever assembly (53) as shown in the Hand Lever Position for Twin Disc Power Take-Offs and, if appropriate, the Model SPE114, SPE214 and SPE314 Arm Adjustment Procedure in this Installation section, and torque the hex head capscrew to 81 - 95 Nm (60 - 70 lb. ft.)

25.

Install the support plate. Refer to support plate information in the Description and Specifications section. Install eight M12 x 1.75 pitch 8.8 Property Class quality capscrews per ISO 898-1. Torque Torque to 80 Nm. (59 lb.-ft.). Note: Verify proper shimming and alignment of the support plate.

56


Installation


Hand Lever Position for Twin Disc Power Take-Offs Normal Position: Operating Shaft Horizontal To insure there is no preload on the shifting mechanism, mechanism, the hand lever position with the clutch engaged should be slightly past vertical position, slightly towards engine.

The handle should NEVER be installed in a horizontal position when the operating shaft is positioned positi oned horizontally. horizontally. Improper handle position can cause throwout collar failure resulting in catastrophic failure of the clutch. Vertical Engaged

Disengaged

Figure 16. Hand Lever Position

Special Position: Operating Shaft Vertical If the installation requires that the operating shaft be in a vertical position, a stop collar must be installed to prevent the weight of the hand lever, lever, operating shaft and throwout yoke from creating a preload on the throwout collar. Position the hand lever as described above and also position and lock l ock a stop collar on the operating shaft so that the throwout throw out yoke is centered on the throwout collar. Contact Twin Disc’s Service Department for information informatio n on use of a stop collar. Operating Shaft

Stop Collar

Figure 17. Use of a stop collar with a vertical operating Power Take-Off Service Manual #1022763

57

Installation


Model SPE114, SPE214 and SPE314 Series Arm Adjustment Procedure Clearance “X” SPE114 - 2.286 mm. (0.090 in.) SPE214 - 2.286 mm. (0.090 in.) SPE314 - 2.286 mm. (0.090 in.)

Clearance SPE114 - 3.048 mm. (0.120 in.) SPE214 - 3.048 mm. (0.120 in.) SPE314 - 3.048 mm. (0.120 in.)

Figure 18. SPE114, SPE214 and SPE314 Series Adjust Camrols

Refer to the Engineering Drawings , and the illustrations above and in the Illustration section of this manual.

58

1.

Loosen Loos en the the ne neut utra rall lock lock ar arm m hex hex hea head d caps capscr crew ew th that at sec secur ures es it to to the the operating shaft.

2.

Engage the clutch.

3.

Position Positi on th the e camr camrols ols (9 (92) 2) at th the e clea cleara ranc nce e “X” “X” of 2. 2.286 286 mm. (0 (0.0 .090 90 in in.) .) by using feeler stock or gauges.

4.

Place the de Place deten tentt roll roller er (8 (84) 4) in th the e for forwar ward d groo groove ve of the det deten entt loc locato atorr (88).

5.

Positi Posi tion on the the neu neutr tral al loc lock k arm arm (80) (80) on on the the oper operat atin ing g shaf shaftt to pro provi vide de a clearance of 3.148 mm. (0.120 in.) between bet ween the snap ring (79) on the roller pin (82) and the neutral lock arm.

6.

Tig ight hten en th the e neu neutr tral al loc lock k arm arm hex hex he head ad ca caps pscr crew ew and and to torq rque ue to 40. 40.7 7 Nm (30 lb.-ft.). Power Take-Off Service Manual #1022763

Installation


Position and Measure Alignment of the Sheave 1.

Align the drive R and driveN shafts so that the faces of the sheaves are aligned and parallel to each other. Misalignment must be LESS LES S THAN 1/2 of 1 degree between the faces.

2.

Position the sheave (drive R sheave on the PTO shaft) so it is aligned with the drive N sheave (on equipment being driven by the PTO).

3.

Calculate MAXIMUM allowable misalignment distance of of the faces: Max. = 0.222 mm. (0.00875 in.) x distance between betw een sheave centerlines.

4.

Place a tig Place tight ht co cord rd or st stra raig ight ht ed edge ge ag agai ains nstt bot both h edg edges es of th the e fla flatt fac face e of of one sheave. Measure the distance between the cord or straight edge and the face of the other sheave. The gap is the misalignment distance. Align the sheave sheaves s to meet specifi specifications cations..

Misalignment between the sheaves will result in shortened service life of the belts and may result in premature equipment failure.

Not Aligned

Aligned DriveR Sheave

Use Alignment straight edge or tight cord

DriveR Sheave

Straight edge or tight cord flat against both edges of one sheave

Straight edge or tight cord to be flat against both edges of both sheaves

DriveR and DriveR DriveN Drive N shafts must be parallel.

DriveN Sheave

Use Alignment straight edge or tight cord

DriveN Sheave

Misalignment Distance Measure misalignment distance between sheave face and cord or straight edge here.

Figure 19. Align Sheaves to Specifications Power Take-Off Service Manual #1022763

59

Installation


Allowable Side Loads REAR OF BEARING HOUSING

x

CENTERLINE OF SIDE LOAD

L=

126,000 x H.P. x F x LF NxD

Figure 20. Allowable Side Pull and Formula to Determine Applied Load (See alternate illustrations for Spread Bearing Models)

Formula values: 

L = actual applied load (Lbs.)



N = shaft speed (RPM)



D = pitch diameter (in.) at sheave, etc.



F = load factor ! 1.0 for chain or gear drive ! 1.5 for timing belts



! !

2.5 for all V belts 3.5 for flat belts

LF = 2.1 for reciprocating compressors and other severe shock drivers and 1.8 for large inertia type drive (crushers, chippers, planers)

A support plate must be attached at the rear of the PTO if it is subjected to side load operation of the shaft. See the Twin Disc Power Take-Off Reference Listing and Support Plate Specifications in the Description and Specifications section of this manual. Note No te:: SP214IL and SP314IL Power Take-offs Take-offs a re recommended for in-line, not side-loaded, applications.

60


Installation


Table 14. Allowable Side Loads

(Table 14.1) SP114P (M1969A, M1985, M1985A): M1985A): (SP114P001, SP114P003, SP114P101, SP114P102, SP114P104, SP114P106, SP114P108, SP114P109, SP114P110, SP114P111, SP114P112, SP114P114, SP114P115) RPM

‘X’ Distance 4 5

1

2

3

6

7

8

1000

3390

2600

2120

1780

1535

1350

1210

1090

1500

3390

2600

2120

1780

1535

1350

1210

1090

2000

3390

2600

2120

1780

1535

1350

1210

1090

2200

3390

2600

2120

1780

1535

1350

1210

1090 1000 RPM

Table 14.1 4000

1500 RPM

3500

2000 RPM

. s3000 b L , d2500 a o L2000 m u1500 m i x1000 a M

2200 RPM

500 0 0

2

4

6

8

10

"X" "X" Distance, Distance, inches inches (se e dr awing)


61

Installation


Table 14. Allowable Side Loads (continued)

(Table 14.2) SP214P (M1969A) (SP214P111) RPM


1

2

3

6

7

8

1000

4030

3240

2710

2330

2050

1820

1640

1500

1500

4030

3240

2710

2330

2050

1820

1640

1500

2000

4030

3240

2710

2330

2050

1820

1640

1500

2200

4030

3240

2710

2330

2050

1820

1640

1500

Table 14.2

1000 RPM

4500

1500 RPM

4000

2000 RPM

s3500 b L3000 , d a o2500 L 2000 m u m i 1500 x a1000 M

2200 RPM

500 0 0

2

4

6

8

10

"X" Distance, Inches (See Sketch)

62


Installation



(Table 14.3) SP214P (M1985, M1985A): (SP214P001, SP214P004, SP214P008, SP214P101, SP214P1 SP214P114, 14, SP214P1 SP214P115, 15, SP214P120, SP214P122, SP214P128, SP214P130, SP214P135, SP214P137, SP214P138, SP214P139, SP214P142) ‘X’ Distance 4 5

RPM

1

2

3

1000

5360

4320

3610

3100

1500

5360

4320

3610

2000

5360

4320

2200

5360

4320

6

7

8

2720

2420

2180

1990

3100

2720

2420

2180

1990

3610

3100

2720

2420

2180

1990

3610

3100

2720

2420

2180

1990

1000 RPM

Table 14.3 14.3

1500 RPM

6000

2000 RPM 5000

2200 RPM

s b L4000 , d a o L3000 m u m2000 i x a M

1000 0 0

2

4 6 "X" "X" Distance, Distance, Inches (See Sketch)


8

10

63

Installation



(Table 14.4) SP214P (M2327, M2529) (SP214P110, SP214P113, SP214P122, SP214P129, SP214P141) ‘X’ Distance RPM

1

2

3

4

5

6

7

8

1000

5980

4700

3880

3290

2870

2540

2270

2060

1500

5980

4700

3880

3290

2870

2540

2270

2060

2000

5980

4700

3880

3290

2870

2540

2270

2060

2200

5980

4700

3880

3290

2870

2540

2270

2060 1000 RPM

Table 14.4

1500 RPM

7000

2000 RPM

6000

2200 RPM

s b5000 L , d a4000 o L m3000 u m i x2000 a M

1000 0 0

64

2


8

10


Installation



(Table 14.5) SP214OP (M2529) (SP214P125) RPM


1

2

3

6

7

8

1000

7750

6730

5480

4630

4000

3530

3160

2850

1200

7330

6730

5480

4630

4000

3530

3160

2850

1800

6480

6130

5480

4630

4000

3530

3160

2850

2400

5950

5650

5350

4630

4000

3530

3160

2850

1000 RPM

Table 14.5 14.5 9000

1200 RPM

8000

1800 RPM 2400 RPM

7000 s

b L6000 , d a o5000 L m4000 u m i 3000 x a M2000

1000 0 0

2

4 6 "X" Distance, Inches (See Sketch)


8

10

65

Installation



(Table 14.6) SPE214P (M2529) (SPE214P003 ) ‘X’ Distance RPM

1

2

3

4

5

6

7

8

5980

4700

3880

3290

2870

2540

2270

2060

1500

5980

4700

3880

3290

2870

2540

2270

2060

2000

5980

4700

3880

3290

2870

2540

2270

2060

2200

5980

4700

3880

3290

2870

2540

2270

2060

1000

1000 RPM

Table 14.6

1500 RPM

7000

2000 RPM

6000

2200 RPM

s b5000 L , d a4000 o L m3000 u m i c2000 x a M

1000 0 0

66

2

4 6 "X" Distance, Inches (See Sketch)

8

10


Installation



(Table 14.7) SP314P (MA1122) (SP314P118) ‘X’ Distance 4 5

RPM

1

2

3

1000

6170

5850

5580

4720

1500

5350

5120

4850

2000

5025

4750

2200

4850

4650

6

7

8

4110

3630

3260

2945

4650

4110

3630

3260

2945

4450

4250

4110

3630

3260

2945

4350

4150

4000

3630

3260

2945 1000 RPM

Table 14.7

1500 RPM

7000

2000 RPM 6000

2200 RPM

s e h5000 c n I , d4000 a o L3000 m u m i 2000 x a M1000

0 0

2



8

10

67

Installation



(Table 14.8) SP314P (M1985, M1985A) (X9585, SP314P1 SP314P119, 19, SP314P002, SP314P101, SP314P1 SP314P110, 10, SP314P1 SP314P116, 16, SP314P126) ‘X’ Distance 4 5

RPM

1

2

3

1 00 0

6 17 0

51 20

42 0 0

3 57 0

1 50 0

5 35 0

51 20

42 0 0

2 00 0

5 02 5

47 50

2 20 0

4 85 0

46 50

6

7

8

3 10 0

2 7 40

24 6 0

2 220

3 57 0

3 10 0

2 7 40

24 6 0

2 220

42 0 0

3 57 0

3 10 0

2 7 40

24 6 0

2 220

42 0 0

3 57 0

3 10 0

2 7 40

24 6 0

2 220 1000 RPM

Table 14.8 14.8

1500 RPM

7000

2000 RPM

6000

2200 RPM

s b5000 L , d a4000 o L m3000 u m i x2000 a M

1000 0 0

2

4

6

8

10

"X" "X" Distance Distance , Inche Inche s (See Ske tch)

68


Installation



(Table 14.9) SP314P; SPE314P (M2137, M2327): M2327): (SP314P003, SP314P004, SPE314P006, SP314P007, SP314P008, SP314P009, SP314P102, SP314P103, SP314P106, SP314P109, SP314P122 ) ‘X’ Distance 4 5

RPM

1

2

3

1000

6170

5850

5580

4720

1500

5350

5120

4850

2000

5025

4750

2200

4850

4650

6

7

8

4110

3630

3260

2945

4650

4110

3630

3260

2945

4450

4250

4110

3630

3260

2945

4350

4150

4000

3630

3260

2945 1000 RPM

Table 14.9

1500 RPM

7000

2000 RPM 6000

2200 RPM

s b 5000 L , d a 4000 o L m3000 u m i x 2000 a M

1000 0 0

2



8

10

69

Installation



(Table 14.10) SP314P (M2529, M2713): M2713): (SP314P004, SP314P008, SP314P105, SP314P107, SP314P1 SP314P112) 12) ‘X’ Distance 4 5

RPM

1

2

3

1000

6170

5850

5580

4720

1500

5350

5120

4850

2000

5025

4750

2200

4850

4650

6

7

8

4110

3630

3260

2945

4650

4110

3630

3260

2945

4450

4250

4110

3630

3260

2945

4350

4150

4100

3630

3260

2945 1000 RPM

Table 14.10

1500 RPM

7000

2000 RPM

6000

s e h 5000 c n I , d 4000 a o L 3000 m u m i 2000 x a M 1000

2200 RPM

0 0

2

4

6

8

10

"X" "X" Distance, Distance, Inches (See Sket ch)

70


Installation



(Table 14.11) SP314OP (M2529) (SP314P123, SP314P127) RPM

1

2


3

6

7

8

1000

Consult Twin Disc

1500 2000 2200

1000 RPM

Table 14.11

1500 RPM

1

2000 RPM 1

2200 RPM

s b L 1 , d a o L 1 m u m i 0 x a M 0

0 0

2

4

6

8

10

"X" "X" Distance, Distance, Inches (See Ske tch)


71

Installation



(Table 14.12) SP314SB (No Pilot Bearing) Bearing) (SP314S106, SP314S107, SP314S108, SP314S114, SP314S115, SP314S116, SP314S118, SP314S119, SP314S120, SP314S122, SP314S123, SP314S124) RPM

5

6

‘X’ Distance** 7 8

9

10

1500

10600 11900 13600 14700 12800 11350

1800

10000 11250 12800 13900 12150 10750

2100

9550

2400

9160 10300 11800 12800 11150 ** See Illustration Below for proper measurement of “X” Distance

10750 12250 13300 11600 10300 9900

1500 RPM

Table 14.12

1800 RPM 160 00

2100 RPM

15000

2400 RPM

140 00 130 00 120 00 11000 100 00 9000 8000 4

5

6

7

8

9

10

11

"X" Distance, Inches (See Sketch Below)

Rear Face of Housing (44) X

72

Centerline of Side Load


Installation



(Table (T able 14.13) SP314SB (No Pilot Bearing) Bearing) (SP314S117) ‘X’ Distance** 6 7

RPM

5

1600

9612

10821

12378

11065

1800

9278

10445

11948

10681

2000

8989

10119

11576

10349

8

2200 8736 9835 11250 10057 ** See Illustration Below for proper measurement of “X” Distance 1600 RPM

Table 14.13 14.13

1800 RPM 13000

2000 RPM

12500

2200 RPM

s 12000 b L 11500 , d 11000 a o L 10500 m10000 u m i 9500 x a 9000 M

8500 8000

3

4

5

6

7

8

"X" "X" Distance, Distance, Inches (See Sketch Below ) Rear Face of Housing (44) X


Centerline of Side Load

73

Installation


Alignment - U-Joint-Type Installation Refer to illustration on next page. To realize the longest possible life of the power take-off bearings, the best possible alignment must be maintained mainta ined between the center line of the power take-off shaft and the center line of the driven unit shaft. 1.

It is ex extre tremel mely y impo importa rtant nt th that at th the e for forks ks of the dr drive ive sh shaft aft be betwe tween en th the e pto pto and the driven unit lie in the same plane. This will prevent severe vibrations from occurring in the drive shaft.

2.

The ce cent nter er lin lines es of th the e pto pto sh shaf aftt and and th the e dri drive ven n uni unitt inp input ut sh shaf aftt mus mustt be be offset within the limits recommended by the u-joint manufacturer to prolong the life of the universal joint needle bearings.

3.

It is is ext extre reme mely ly imp impor orta tant nt tha thatt the the cent center er lin lines es of of the the pto pto sha shaft ft and and dri drive ven n unit input shaft be parallel. This will further prevent vibrations vi brations which cause premature pto bearing failure.

4.

Proper lubrication of the pto is imp ortant for satisfactory service. Refer to lubrication specifications in in the the Description and Specifications section of this manual.

Align the centerlines of the pto shaft and the input shaft of the driven unit. (One possible method is described below.)

74

5.

To alig align n the the eng engin ine e and and gea gearr head head by th this is met method hod,, two two ac accur curate ate str straig aight ht edges at least 91 cm. (36 in.) long and a tape measure are required.

6.

Place Plac e the the st stra raig ight ht ed edge ges s hor horiz izon onta talllly y alo along ng th the e face face of the the pt pto o and and ge gear ar head hubs. Measure distances A and B. These two distances should be equal within 3.17 mm. (0.125 in.) at a point 45.7 cm. (18 in.) from the centerline of the shaft. Move the engine and/or driven unit to obtain this specification.

7.

Rotate Rota te the the sha shaft fts s so th the e stra straig ight ht edg edges es are are in in a ver verti tica call posi positi tion on.. Meas Measur ure e the distances C and D as was done for A and B in step 2. These two distances should be equal within 3.17 mm. (0.125 in.) at a point 45.7 cm. (18 in.) from the centerline of the shaft. Move the engine and/or driven unit to obtain this specification.


Installation


8.

Secure Secu re th the e eng engin ine e and and dr driv iven en un unit it.. Rec Reche heck ck A an and d B, B, C and and D as as described in steps 5 through 7 above. All measurements must be within the specifications. If not, repeat steps 5 through 7 until specifications are met.

Figure 21. Alignment - U-Joint-Type U-Joint-Type Installation


75

Installation


Setting Up Air Engagement on Twin Disc Power Take Offs 1.

The cyli The cylind nder er sho shoul uld d be lo loca cate ted d so th that at the the pis pisto ton n move moves s forw forwar ard d and and backward in exactly the the same direction as the engagement lever lev er and is aligned so it travels in exactly the same plane.

2.

The air The air cyli cylind nder er mus mustt be of of suff suffic icie ient nt siz size e to ope opera rate te the the req requi uire red d torq torque ue to engage the clutch. It must have some means to make adjustment on the piston stroke.

3.

Air pres Air pressu sure re mus mustt be con const stan ant. t. Low Low pre press ssur ures es cou could ld giv give e only only par parti tial al engagement which will cause failures of the clutch and throwout collar.

4.

The pi pist ston on tra trave vell mus mustt be be with within in lim limits its es esta tabli blish shed ed to bo both th fu fully lly en enga gage ge and fully disengage the clutch. Failure to provide these parameters will cause failure and possible breakage of the clutch.

5.

The eng The engag agin ing g cyl cylin inde derr must must no nott plac place e a pre press ssur ure e eit eithe herr in th the e eng engag aged ed or disengaged direction after completion of its cycle. The throwout collar after engagement or disengagement. Operating the pto must float free after with constant pressure on the throwout collar will result in failure. Suggestion: A slotted connecto connectorr, similar similar to the one one illustrated illustrated below may be used.

Adjust cylinder stroke so there is a clearance on both sides of the pin when in engaged AND disengaged positions

Fully Engaged Position

Fully Disengaged Position

Cylinder Rod

Connector with slotted hole Slotted hole Pin

Figure 22. Slotted Connector Used on Air Cylinder Rod

76


Installation


6.

The air cy cylin linde derr mus mustt be be rea readju djuste sted d whe when n the the cl clutc utch h is is read readju juste sted d and and any time the travel or position moves from the specifications described above.

Determine the length of travel for the engaging cylinder.

7.

Multip Mult iply ly the the len lengt gth h of of the the han hand d leve leverr by th the e valu value e sho shown wn in in the the foll follow owin ing g chart. This provides the approximate required length of the piston stroke. Note: The hand lever length is the distance from the center of the operating shaft to the point where the cylinder will be connected to the lever. Table 15. Engaging Stroke Travel Travel at 25.4 mm. (1 in.) Model

Engaging Stroke Travel at 25.4 mm. (1 in.) mm.

inches

SP114, SPE114 Series

7.925

0.312


7.925

0.312


7.950

0.313

Determine the engaging force in pounds required at the cylinder.

8.

Divide Divi de th the e forc force e val value ue in the the ch char artt belo below w by th the e len lengt gth h of of the the ha hand nd le leve verr (in inches). This provides the required force (in pounds) that must be provided by the piston.

Note: Periodically disconnect the power cylinder to measure the clutch engagement force. Refer to Clutch Adjustment in the Maintenance section. Table 16. Engaging Force Required at Cylinder at 25.4 mm. (1 in.) Model

Engaging Force Required in Cylinder Force (n (newtons)

Force (p (pounds)


14012

3150


14012

3150


14012

3150


77

Installation


NOTES

78



Operation

Operation

General Information Model SP114, SPE114, SP214, SPE214, SP314, SPE314, SP314SB, RFD214 and RFD314 Series Power Take-Offs Take-Offs consist of a manually engaged and disengaged disconnect clutch mounted on an output shaft in a cast iron i ron housing that is bolted to the engine. Clutch engagement and disengagement is accomplished by means of an operating lever on the outside of the pto housing, which actuates an internal linkage mechanism. A drive ring is bolted to the engine flywheel. flywheel. Internal teeth of the drive ring mesh with external teeth of the clutch driving plate(s). These are the input components of the Power Take-Off. Take-Off. Input components compon ents always rotate at engine rpm. Output components of the Power Take-Off consist of a clutch hub that is mounted on the output shaft, a linkage mechanism for clutch engagement and disengagement and clutch adjustment components. Clutches designed with multiple clutch driving plates have a clutch center plate located between the driving plates. The clutch center plate and pressure plate are driven through internal teeth that mesh with external teeth on the clutch hub. Until clutch engagement is initiated, the output components do not rotate. During clutch engagement, the clutch pressure plate is moved to clamp the clutch friction plate(s) against the t he friction face of the clutch hub (or the center plate(s). The internal engagement mechanism of the clutch locks the clutch pressure plate in the engaged position to complete the drive. Thus, at full clutch engagement while the engine is running, the output shaft is driven at engine speed. Grease- or oil-lubricated main bearings are located in the pto housing or bearing carrier. Some designs include a pilot bearing mounted in the engine flywheel to support the front end of the clutch shaft. However, some designs incorporate a main bearing configuration that does not require use of a pilot bearing. A support plate bolted to the bearing carrier of some units is require required d to provide sufficient support where heavy weight and/or side loads exist.


79

Operation


Clutch Engagement Procedure

Normal Clutch Engagement The PTO clutch should normally be engaged with the engine at the lowest rpm possible. The clutch should be engaged quickly to avoid an extended period of slippage during engagement. The clutch should be engaged with the engine operating below 1,000 rpm. After the clutch is fully fully engaged engaged and the load has been brought up to engine engagement speed, the engine rpm may be increased to operating speed.

Clutch Engagement Where High Inertia Loads Exist Twin Disc, Inc. recommends that the PTO installation be designed to allow clutch engagement at 1,000 rpm or below. Under extreme circumstances, where high inertia loads must be picked up, the engine may have to be operated at higher speeds while the engagement occurs, as engaging the clutch at 1,000 rpm or below may result in stalling the engine.

Clutch engagement should occur at the lowest possible engine rpm.

Heavy inertia loads may be brought up to engine speed by a series of short clutch engagements and disengagements at intervals long enough to gradually increase the speed of the load, yet prevent excessive heat buildup in the friction facings. After the clutch is fully fully engaged engaged and the load has been brought up to engine engagement speed, the engine rpm may be increased to operating speed.

Under no circumstances should the clutch be slipped for more than a second or two without either fully engaging or disengaging the clutch to permit it to cool.

80



Operation

Clutch engagement to clear a jammed driven device

Never engage the PTO to unjam a stuck load. Doing so could result in injury to the operator, and damage to the equipment.

Always shut the engi Always engine ne off and dise disengag ngage e the clut clutch ch befo before re clea clearing ring a jamme jammed d load. The jam should be cleared, and the output shaft must be rotated to be certain that the jam is completely removed before starting the engine and engaging the PTO.

Operator should be aware of the required clutch engagement force The clutch engagement force must be at the proper level to realize long life of the PTO clutch. If this engagement force seems low, low, refer to the Clutch Adjustment Procedure in the Maintenance section of this manual.

Insufficient clutch engagement force can cause clutch slippage sli ppage resulting in catastrophic clutch failure.

The engagement lever must be located in the proper position to prevent premature failures of the internal throwout collar components. The engagement lever should be in the vertical position positio n with the clutch engaged. See Hand Lever Position for Twin Disc Power Take-Offs in in the the Installation section of this manual.

Improper handle position can cause throwout collar failure failur e resulting in catastrophic failure of the clutch.


81

Operation


NOTES

82


Maintenance


Maintenance

Maintenance Tips Tapered Roller Bearing Adjustment 1.

Tap aper ered ed rol rolle lerr bear bearin ing g end end play play adj adjus ustm tmen entt shou should ld hav have e been been adj adjus uste ted d prior to installation of the power take-off. Periodically check for excessive shaft movement during clutch engagement and disengagement and during operation to insure failure is not occurring. See S ee information in the Installation section of this manual.

Pilot Pil ot Bea Bearin rings gs 2.

Ball-t Ball -typ ype e pilo pilott bear bearin ings gs and and Rol Rolle lerr-ty type pe pil pilot ot bea beari ring ngs s must must be be inst instal alle led d properly. Some pilot bearings are to be greased periodically, See Lubrication this Maintenance section.

Lubrication 3.

Ver erify ify th that at the PT PTO O is is pro prope perly rly lu lubri brica cated ted pri prior or to st star artin ting g the the en engin gine e and and at all times during operation. Refer to the Twin Disc Power Take-Off Reference Listing Lis ting in the Description and Specifications section, Lubrication in this Maintenance section and Engineering Drawings near the back of this manual. Throwout bearing failures may be, among other causes, the result of improper lubrication.

Clutch Adjustment 4.

Check fre Check frequ quen ently tly to in insu sure re tha thatt the the clu clutc tch h is is adj adjust usted ed ac acco cordi rding ng to th the e procedure outlined in Clutch Adjustment in this Maintenance section. Failure to do so will result in premature clutch wear w ear and failure. Note: Twin Disc will not be responsible for any damage or injury resulting from improper adjustment and/or lubrication. This includes any accessory drives and loads.


83

Maintenance


Hand Han d Le Lever ver Po Posit sitio ion n 5.

Throwo Thro wout ut bea beari ring ng fai failu lure res s may may be, be, amon among g othe otherr caus causes es,, the the resu result lt of of improper hand lever position. See Hand Lever Adjustment for Twin Disc Power Take-Offs and Model SPE114, SPE214 and SPE314 Arm Adjustment Procedure in the Installation section of this manual.

Ali A lig gnmen ent t 6.

The fl flywh ywhee eell and and fly flywhe wheel el ho hous usin ing g alig alignm nmen entt sho shoul uld d hav have e bee been n set set wit withi hin n specifications prior to installation of the power take-off and must be maintained for long service life of the components. Misalignment of driven components can result in power take-off failure. Periodically check for bolts that may have loosened or driven components that have not been properly aligned during servicing or maintenance procedures. See information regarding Alignment in in the Installation section of this manual.

Support Plate 7.

When mou When mount ntin ing g the the engi engine ne an and d Powe Powerr Tak Takee-Of Offf in th the e mach machin ine, e, a customer-supplied customer-supp lied support plate may be required to support the output end of the PTO housing. Proper installation installati on and alignment of the support plate must be maintained. Periodically check to insure that the bolts securing the support plate are tightened to specifications and that the support plate is properly reinstalled and realigned whenever work is performed on the power take-off or power package module. m odule. See the information about customerSpecificati ons supplied support support plates plates and Twin Disc Support Plate Specifications contained in the Description and Specifications section of this manual.

Failure to follow maintain this requirement requi rement may result in damage to the power take off or the engine flywheel housing.

84


Maintenance


Belt or chain tension/Allo tension/Allowable wable Side Load Pulls 8.

Maintain Maint ain pr prop oper er be belt lt or ch chain ain ten tensi sion on adj adjus ustme tment nts. s. Av Avoi oid d exce excess ssive ively ly tight or excessively loose belts or chains. Failure Failu re to maintain proper belt or chain adjustment can cause bearing failure and shortened power take-off service life.

Deflec Def lecti tion on Cau Caused sed by Sid Side e Lo Load ad Pu Pull lls s 9.

Mainta Main tain in pr prop oper er si side de th that at do no nott exc excee eed d spe speci cifi fied ed lilimi mits ts sh sho o wn in Allowable Side Load Pulls in this Maintenance section and PTO Deflection in the Description and Specifications section.

Airr En Ai Enga gage geme ment nt Me Mech chan anis isms ms 10.

Air eng engage agemen mentt mec mechan hanism isms s rem remain ain pro proper perly ly adj adjust usted ed at all tim times. es. See in the the Setting Up Air Engagement on Twin Disc Power Take-Offs in Installation section.


85

Maintenance


Lubrication Refer to the th e Twin Disc Power Take-Off Reference Listing Lis ting in the Description and Specifications section, the exploded views in the Illustration section and Engineering Drawings near the back of this manual.

Grease Spe Specifications cifications Use NLGI Grade 2 grease with a minimum 149° C. (300° F.) F.) drop point for all lubrication.

Oil Specifications for oil-lubricated oi l-lubricated main mai n bearings - SP211OP and SP311OP SP311OP Series Use a good grade MS, DG, or better SAE No. 30 engine oil.

Lubrication Locations Config. B

Config. A Collar (grease)

Collar (grease)

Main Bearings (grease)

Main Bearingstwo fittings. (grease)

Config. C, E, F and J

Operating Shaft (grease)


Collar (grease)

Config. D Collar (grease)

Config. G

Main Bearings (grease)

Collar (grease)


Fill Main Bearings (oil)

Main Bearings (oil in from external source)

Oil Level Check



Config. H & I

Config. J

Front Main Bearing (grease)

Collar (grease) Front Main Bearing (grease)

Collar (grease)

Output Bearing (grease)

Main Bearings (oil out to sump)


Pilot Bearing (grease) Periodic lube only


Figure 23. Lubrication Locations 86


Maintenance


Refer to the Twin Disc Power Take-Off Reference Listing List ing in the Description and Specifications section, the the exploded exploded views in the Illustration section and Engineering Drawings near the back of this manual. Table 18. Quick-reference lubrication lubricat ion chart. Also see information above. Item

Amount

Check Interval

Notes

1cc

Every 8-10 hrs.

NLGI Grade 2 Grease

Add 1cc

Every 8-10 hrs.

NLGI Grade 2 Grease

Throwout Collars Main Bearings (Grease) Main Bearings (Oil) (SP214OP only)

Fill to bottom of check plug pl ug hol ole. e.

Every 8-10 hrs. MS, DG or better Drain & fill SAE No. 30 Engine Oil 6 mon ontths hs/1 /100 000 0 hrs rs..

Operating Shaft

1cc

3 months/100 hrs.

NLGI Grade 2 Grease

Pilot bearings (Periodic lube)

1cc

3 months/100 hrs.

NLGI Grade 2 Grease

Pilot bearings (Pre-lubricated)

none required

Clutch Linkage

drop

500 hrs.

.

Main Bearings All Mod Models els SP1 SP114, 14, SPE SPE1 114, SP2 SP214, 14, SPE SPE214 214,, SP3 SP314, 14, SPE SPE314, 314, SP314SB, RFD214 and RFD314 Series (except SP214OP, SP214OP, and SP314OP Series) Apply 1 cc of grease (one shot shot from a grease grease gun) before start-up and then then every 8-10 hours operation thereafter, through the fitting on the bearing carrier (55) or sheave housing.

Models Mod els SP21 SP214OP 4OP Seri Series es (su (such ch as SP21 SP214P12 4P125) 5) The tapered roller bearings are lubricated from oil contained cont ained in an oil cavity in the bearing carrier. Fill through the breather hole until the oil level is at the bottom of the check plug hole in the side of the bearing carrier. The oil level should be checked and maintained every 8-10 hours operation. Drain Drai n and refill the oil cavity every 6 months or 1000 hours (whichever occurs first).

Models Mod els SP31 SP314OP 4OP Seri Series es (su (such ch as SP31 SP314P12 4P123 3 & SP31 SP314P12 4P127) 7) The tapered roller bearings are lubricated from f rom engine oil continuously supplied through an orifice fitting in the bearing carrier. The oil drains back to sump through an opening in the bottom of the bearing carrier. carr ier. No periodic check is necessary. Power Take-off Service Manual #1022763

87

Maintenance


Operating Shaft Fittings All Mod Models els SP1 SP114, 14, SPE SPE1 114, SP2 SP214, 14, SPE SPE214, 214, SP3 SP314, 14, SPE SPE314, 314, SP314SB, RFD214 and RFD314 Series Apply 1 cc. of grease grease (one (one shot shot from from a grease gun) before starting and then then every 3 months or 100 hours operation (whichever occurs first).

Throwout Collar All Mod Models els SP1 SP114, 14, SP21 SP214, 4, SP3 SP314SB 14SB,, RFD RFD214 214 and RFD RFD314 314 Seri Series es Apply 1 cc. cc. of of grease grease (one shot from a grease grease gun) daily before start-up and then every 8-10 hours operation thereafter, through the fitting on the tapered part of the housing.

Models Mod els SPE SPE1 114, SPE SPE214 214 and SPE SPE314 314 Ser Series ies No throwout collar is used. No lubrication is necessary necessary..

Pilot Bearing All Mod Models els SP1 SP114, 14, SPE SPE1 114, SP2 SP214, 14, SPE SPE214, 214, SP3 SP314, 14, SPE SPE314 314,, RFD RFD214 214 and RFD RFD314 314 Ser Series ies (ex (excep ceptt sea sealed led-fo -for-l r-life ife sty style le bea bearin rings) gs).. If the pilot bearing supplied with your power take-off is to be periodically lubricated, add one shot of grease from a grease gun every 100 hours through the fitting in the output end of the clutch shaft. Do Not Overgrease!!

All Mod Models els SP1 SP114, 14, SPE SPE1 114, SP2 SP214, 14, SPE SPE214, 214, SP3 SP314, 14, SPE SPE314 314,, RFD RFD214 214 and RFD RFD314 314 Ser Series ies wi with th sea sealed led-fo -for-l r-life ife sty style le bea bearin rings gs The pilot bearing supplied with most power take-offs is pre-lubricated and sealed for life. No maintenance is required. Inspection is recommended every two years or when the power take-off is removed from the driving component for servicing.

Clutch Linkage Alll Mo Al Mode dels ls Lubricate the clutch linkage mechanism, cotter pins, clevis pins and levers, with engine oil every 500 hours of operation.

Lubricate sufficiently but sparingly sparingly.. Excess oil can splash or drip dri p onto the friction plates, causing clutch slippage that may result in clutch failure.

88


Maintenance


Clutch Adjustment Note: New power take-offs must have clutch adjustment checked before being placed into service and after the first 10 hours of operation. This includes any power take-offs with new friction plates. New plates pla tes have a wear in period and the clutch may require several adjustments before the new plates are worn in.

After wear in, clutch adjustmen adjustmentt should be checked regularly. regularly. Heavy duty applications (rock crushers, etc.,) which have frequent engagements, numerous engagements in an operating day or relatively long periods of slip require requi re more frequent readjustment than light duty applications. Adjust the clutch clutch BEFORE it overhea overheats, ts, does does not not pull, pull, or or the operatin operating g lever lever jumps from the engaged engaged position. position. But these symptoms symptoms are indications indications that clutch adjustment is required. Adjustment measuremen Adjustment measurements ts are made by fitting a torque torque wrench with a 1 1/2” socket over the hex end located at the bottom of the hand lever. Grasp only the torque wrench when making measurements. 1.

Disconn Disco nnec ectt any any po powe werr eng engag agem emen entt dev devic ices es fro from m the the ope opera rati ting ng sh shaf aftt if if so equipped.

To adjust the clutch:

Refer to the exploded the exploded views in the Illustration section. 2.

Remove Remo ve th the e ins instr truc ucti tion on co cove verr pla plate te (4 (45) 5) fr from om th the e hou housi sing ng (4 (44) 4) an and d tur turn n the clutch shaft until the adjusting ring lock l ock pin (25) can be reached.

3.

Disengag Diseng age e the the ad adju justi sting ng loc lock k pin pin an and d ins insert ert a cott cotter er pin or sma smallll nai naill int into o the hole provided to hold it in the disengaged position. position. Turn the adjusting adjusting yoke (26) to the right (or clockwise when looking at the t he flywheel) until the required peak torque is required at the operating shaft (55) to engage the clutch. Refer to the Description and Specifications section of this manual for correct peak torque.

4.

Remove th Remove the e cot cotter ter pi pin n or or smal smalll nail nail.. ReRe-eng engag age e the the ad adjus justin ting g rin ring g loc lock k pin.

5.

Repeat Repe at ste steps ps 3 an and d 4 abo above ve as as nece necess ssar ary y unti untill the the prop proper er tor torqu que e read readin ing g is obtained. Replace the instruction cover plate and secure with two hex-head capscrews (46). Securely tighten.


89

Maintenance


Friction Plate Replacement Refer to the exploded the exploded views in the Illustrations section. Common symptoms indicating that the friction plates (6) are worn out are: 1.

The Th e adj adjus usti ting ng yo yoke ke (2 (26) 6) ca cann nnot ot be tu turn rned ed cl cloc ockw kwis ise e any any fu furt rthe herr.

2.

The fri fricti ction on fac face e sur surfac faces es ha have ve wor worn n flus flush h with with the riv rivet et he head ads, s, or the rivets are loose.

It is necessary to remove and disassemble the clutch asse mbly to replace the th e friction plates. Refer to instructions instruct ions in the Disassembly and Assembly section sections s of this manual.

90


Maintenance


Field Adjustment - Tapered Roller Bearing End Play (side-loaded pto applications) (Except SB Models) Refer to the exploded e xploded views in the Illustrations section section..

All Mod Models els SP1 SP114, 14, SPE SPE1 114, SP2 SP214, 14, SPE SPE214, 214, SP3 SP314 14 and SPE314Series (except SP314IL, SP314SB, RFD214 and RFD314 Series): The only approved method for field adjustment of tapered roller roller bearings (39, 40, 41, 42) in Twin Disc Power Take-Off Take-Off units is by the use of a dial indicator to read actual bearing end play play..

SP314IL, SP314SB, RFD214 and RFD314 Series: There is no adjustment of ball-type or cylindrical roller-type bearings. Adjustment: Adjustment: Refer to the procedure in (Final Setting) Measure and Set Bearing End Play as described for your bearing housing c onfiguration in the Assembly section of this manual.

Refer to the illustration illustrati on below and the Tapered Tapered Roller Bearing Beari ng End Play setting for Tapered Roller Bearings used in Side-Load applications in the Description and Specifications section.

Dial indicator Use a Hoist and swivel hook.

Figure 24. Dial indicator and power take-off position for measuring and setting bearing end play. (Except SB Models) Power Take-off Service Manual #1022763

91

Maintenance


Field Adjustment - Tapered Roller Bearing End Play - (In-Line pto applications)

All Mod Models els SP1 SP114, 14, SPE SPE1 114, SP2 SP214, 14, SPE SPE214, 214, SP3 SP314 14 and SPE SPE314 314 Series (except SP314IL, SP314SB, RFD214IL and RFD314IL Series): Note: SP314IL, RFD214IL and RFD314IL Series: There is no adjustment of ball-type bearings. Note: SP314SB Series: Series: Not designed for in-line applications.

92

1.

Field ex Field exper perien ience ce for ta taper pered ed rol roller ler be beari arings ngs (3 (39, 9, 40 40,, 41, 41, 42 42)) used used wit with h in-line drive installations indicates that extra care must be taken when adjusting the power take-off tapered roller bearings.

2.

The end The end pla play y for for thes these e app applilica cati tion ons s is sp spec ecia iall for for the the abov above e type types s of of applications.

3.

Set bea bearin ring g end end pl play ay fo forr the these se sp speci ecial al ap appli plica catio tions ns us using ing the met metho hod d described for side-loaded applications applicat ions on the previous pages, but set to the specifications shown in Tapered Tapered Roller Bearing End Play setting for Tapered Roller Bearings used in In-Line applications in the Description and Specifications section.


Maintenance


Field Adjustment - Checking Bearing End Play - Model SP314SB Series Only Refer to the Twin Disc Power Des cription Pow er Take-Off Reference Listing in the Description and Specifications section, the exploded views in the Installation secti section on and Engineering Drawings near the back of this manual.

Models Mod els SP31 SP314SB 4SB Seri Series es Only: There is no adjustment of SP314SB series bearings, but bearing end play should be verified to insure the bearings are not damaged or preloaded prel oaded after work is done on the unit. Bearing end play must be 0.20 mm - 0.89 mm (0.008 - 0.035 inches) i nches) after assembly. The only approved method for measuring bearing play in Twin Disc Power Take-Off units is by the use of a dial indicator to read actual act ual bearing end play. 1.

Secure Secu rely ly su supp ppor ortt the the unit unit wit with h the the cl clut utch ch sh shaf aftt in a ver vertic tical al po posit sitio ion n and and the output end up. Be sure the shaft is clear to rotate.


Figure 25. Dial indicator and power take-off position for measuring bearing end play. (SB Models) Power Take-off Service Manual #1022763

93

Maintenance

94


2.

Attach Attac h an an eyeb eyebolt olt in the thr threa ead d at at the the ou outpu tputt end end of th the e sha shaft ft.. Att Attac ach ha hoist with a thrust bearing-equipped swivel hook to the eyebolt.

3.

Secure Secu rely ly att attac ach h a dia diall indi indica cato torr to the the hou housi sing ng and and loc locat ate e the the stem stem so so the tip is contacting the end of the shaft and movement of the tip is vertical, the same direction as the movement m ovement of the shaft. exactly vertical,

4.

Lift the Lift the uni unitt off off th the e supp suppor orts ts usi using ng the ho hoist ist.. App Apply ly app appro roxim ximat ately ely 90 90.7 .7 Kg. (200 lbs.) of downward force on the bearing carrier while dial indicator is being set. Mark a spot on the end of the shaft next to the stem as a starting reference point and set the dial indicator to “zero.”

5.

Carefu Care fulllly y and and gent gently ly low lower er the the uni unitt back back ont onto o the the supp suppor orts ts.. All Allow ow the the hoist to go slack. Apply approximately 90.7 Kg. (200 lbs.) of downward force on the shaft while dial indicator reading is being taken. (The weight of the shaft will be considered part of the 90.7 Kg. (200 lbs.) Read the dial indicator to read actual bearing end play play..

6.

Repeatt ste Repea steps ps 4 and and 5 to to be be sure sure th the e dial dial ind indic icat ator or re read adin ing g rep repea eats ts wit with h accuracy.. Bearing end play should be as shown above. accuracy


Disassembly


Disassembly The following procedure is for complete complet e disassembly of the unit. Prior to this procedure, the power take-off should be removed from the engine. Qualified personnel should do the work w ork in a fully equipped facility. Note: Illustrations used here are to aid in understanding and completing the procedure, and may not appear to be consistent with the previous disassembly steps. Note: Ten main bearing configurations are illustrated. Refer to the th e Twin Disc Power Take-Off Reference Listing in the Description and Specifications section to determine which configuration is used in your pto.


95

Disassembly


Power Take-off Removal From The Engine Refer to the Twin Disc Power Take-Off Reference Listing Lis ting in the Description and Specifications section, sectio n, the the exploded views in the Illustration section and Engineering Drawings near the back of this manual. 1.

Loosen Loos en and and rem remov ove e the the bel belts ts and and rem remov ove e all all atta attach ched ed par parts ts fro from m the the output end of the power take-off.

2.

Remove Remo ve th the e he hex x nut nut an and d hex hex-h -hea ead d cap capsc scre rew w sec secur urin ing g the the ha hand nd le leve verr to the operating shaft.

3.

If use used, d, lo loos osen en th the e sup suppo port rt pl plat ate e from from the the ba base se mo moun unti ting ng..

Configurations H & I only: (All other configurations skip to step 8.) 4.

Remove Remo ve he hex x hea head d cap capsc scre rews ws (6 (65) 5) an and d was washe hers rs (6 (66) 6) (config. I only) and remove the seal plate (64) from the sheave housing (60).

5.

Remo mov ve the external snapring (73) (config. H only) .

6.

Remove Remov e the the he hex x hea head d cap capsc scre rews ws (4 (48) 8) an and d rem remov ove e the the sh shea eave ve ho hous usin ing. g. Bearing (41) will also be removed with the sheave housing.

7.

Remove the belts.

Alll Co Al Conf nfig igur urat atio ions ns:: 8.

Attach Atta ch lif lifti ting ng equ equip ipme ment nt to to the the powe powerr take take-o -off ff and and ta take ke out out the the sla slack ck just to begin to support the weight of the t he pto. Do not apply too much enough to force.

Lifting devices and their capacity must be capable of supporting the weight of the power take-off and all attached devices and equipment. Suspend the pto with the lifting devices securely attached at 3 positions (minimum) so it remains with the main drive shaft in a horizontal position until it is safely lowered low ered and resting on a secure bed.

96


Disassembly


9.

Remove Remo ve the the (tw (twel elve ve or six sixte teen en)) hex hex-h -hea ead d caps capscr crew ews s secu securi ring ng th the e powe powerr take-off to the engine flywheel housing. Use two (7/16-14 UNC x 1 1/2” or 1/2”-13 UNC x 1 1/2” or ) bolts bol ts as pusher screws in the two tapped tap ped holes provided in the housing flange. Use the pusher screws to separate the pto from the engine flywheel housing. Remove R emove the power take-off from the engine.

10.. 10

Remove the eig Remove eight ht hex hex-he -head ad caps capscr crews ews sec securi uring ng the the driv drive e ring ring to to the the engine flywheel.

11.

Support Suppo rt the the powe powerr take take-o -off ff on on a ben bench ch with with the ou outpu tputt shaf shaftt up. up. Use Use wooden blocks under the power take-off. Remove the sheave from the clutch shaft (33).

12.

Remove the shaft key.


97

Disassembly


Clutch Removal Lis ting in the Description Refer to the th e Twin Disc Power Take-Off Reference Listing and Specifications section, the exploded views in the Illustration section and a nd Engineering Drawings near the back of this manual.

1.

Suppor Supp ortt the the powe powerr take take-o -off ff on on a ben bench ch wit with h the the clut clutch ch end end fac facin ing g up. up. Use wooden blocks under the power take-off.

2.

If the pi pilot lot be beari aring ng (or pil pilot ot be beari aring ng inn inner er ra race ce)) rem remain ained ed on th the e sha shaft, ft, remove it using a standard bearing puller.

3.

If th the e pilo pilott bea bearin ring g is is a two two-pi -piec ece e bear bearing ing,, remo remove ve the bea bearin ring’ g’s s oute outerr race from the flywheel using a standard bearing puller. Note: The pilot bearing will be destroyed upon removal. If the bearing seal is broken the bearing is considered destroyed.

4.

Remove Remo ve th the e two two hexhex- hea head d caps capscr crew ews s and and remo remove ve the the ins instr truc ucti tion on pla plate te if they were not previously removed.

5.

Use a 15/ Use 15/16 16”” wren wrench ch to rem remov ove e the the ja jam m nut nut an and d lock lock wa wash sher er fr from om th the e hose fitting located on the side of the power take-off housing. Push P ush the fitting and hose into the power take-off housing.

6.

Str trai aigh ghte ten n the the bent bent por porti tion on of of the the hub hub nut nut lock lock was washe herr. Use Use a 4” 4” wren wrench ch or socket to remove the hub nut from the clutch shaft. Remove the hub nut lock washer.

7.

Use a gea Use gearr pull puller er wit with h thre thread aded ed leg legs s for for 1/2” 1/2”-1 -13 3 UNC UNC tapp tapped ed hol holes es to to pull the clutch assembly from the clutch shaft. Install the puller so the threaded legs screw into the holes provided in the hub-and-back plate and the jackscrew exerts force on the end of the clutch shaft.

The thread puller holes are not to be used as jackscrews.

Remove the clutch and puller from the clutch shaft. Remove the hub key if it was not removed with the clutch. Note: Certain pto models, such as SP214P003, may use special components as part of the clutch operation mechanism. Remove those components that that are mounted on the inside of the pto housing. 98


Disassembly


Clutch Disassembly Refer to the Twin Disc Power Take-Off Reference Listing in the the Description List ing in and Specifications section , th the e exploded views in the Illustration section and a nd Engineering Drawings near the back of this manual.

All 14 in inch ch mo model del clu clutch tches es 1.

Set th the e clu clutch tch as asse sembl mbly y on on a ben bench ch wit with h the the thr throwo owout ut co colla llarr fac facing ing up up.. Disengage the clutch.

2.

Remove Remo ve the the gre greas ase e fitt fittin ing g (23) (23) fro from m the the hose hose fit fitti ting ng (20 (20). ). Rem Remov ove e the the hose (19) and hose fitting (18) from the trunnion of the collar assembly assembly..

3.

Remove Remo ve th the e four four cot cotte terr pin pins s (17 (17)) from from th the e fou fourr cle clevi vis s pin pins s (16 (16)) sec secur urin ing g the sliding sleeve to the links (15).

4.

Remo Re move ve th the e sle sleev eve e and and co collllar ar as asse semb mbly ly fr from om th the e lin links ks.. Note: Models SPE114, SPE214 and SPE314, such as SP211P003, do not use a release collar assembly assem bly..

Bronze Collar Disassembly 5.

Remove Remo ve tw two o hex hex hu huts ts and and tw two o hex hex he head ad bo bolt lts s to to remo remove ve th the e thro throwo wout ut collar halves and shims from the sliding sleeve.

Ball Bearing Collar Disassembly 6.

Remove Remo ve th the e inte intern rnal al sna snap p rin ring g (31) (31) fro from m the the slee sleeve ve si side de of of the the coll collar ar (28) and let it hang on the sliding sleeve.

7.

Tap th the e co coll llar ar fr fro om the the re rele leas ase e bea beari ring ng (3 (30) 0)..

8.

Remo Re move ve th the e ext exter erna nall sna snap p rin ring g (29 (29)) from from th the e sli slidi ding ng sl slee eeve ve..

9.

Press Pres s the the slee sleeve ve fro from m the the bea beari ring ng in a pr pres ess s or pu pullll the the bea beari ring ng fr from om the the sleeve.

10.. 10

Remo Re move ve th the e sna snap p rin ring g (29 (29)) fro from m the the sle sleev eve. e.


99

Disassembly


All 14 in inch ch mo model del clu clutch tches es 11.

Pull the adju Pull adjust sting ing loc lock k pin (25 (25), ), comp compres ressin sing g the loc lock k pin spr spring ing (24 (24), ), and unscrew the adjusting ring (26) from the hub-and-back plate assembly.. Remove the adjusting lock pin and spring from the adjusting assembly ring.

12.

Straight Strai ghten en and and remo remove ve the the four four cot cotter ter pin pins s (13) (13) and and the the four four cle clevis vis pin pins s (14) to disconnect the eight links (15) from the four levers (9).

13.

Strai traight ghten en and rem remove ove the fou fourr cotte cotterr pins pins (12 (12), ), fou fourr washe washers rs (10 (10)) and and four clevis pins (11) that secure the levers to the pressure plate (8). Remove four levers from the pressure plate.

14.. 14

Remove Remov e the pre press ssure ure plat plate e (8) and and frict friction ion plat plate e (6) from from the the hubhub-an anddback plate (4).

Two-- and three- plate 14 inch model clutches only Two 15.

100

Remove the rema Remove remainin ining g frict friction ion plat plate(s) e(s) (6) and cen center ter plat plate(s) e(s) (7) from the hub-and-back plate.


Disassembly


Remove the Operating Shaft and Throwout Yoke Refer to the BOM and exploded views in the Illustrations sectio section n of this manual. Refer to the Twin Disc Power Take-Off Reference Listing in the the Description List ing in and Specifications section to determine which configuration is used in your PTO.

SPE114, SPE214 and SPE114, a nd SPE314 Series only: (SP114, SP214, SP314, SP314SB, RFD214 and RFD314 Serie s s skip skip to ste step p 5 ) Hex Head Capscrew (86) Washer (85)

Detent Locator (88)

Hex Head Capscrew (87)

Neutral Roller Pin Lock Arm (82) (80) Spring Snap Ring Retaining (81) (79) Ring (83)

Clevis Pin (89) Hex Nut (93)

Camrol (92) Throwout Fork (54)

Roller Operating Shaft Set Screw (90) (55) (91)

Key (56)

Figure 26. Illustration - SPE Release Mechanism Components

1.

Remove Remo ve th the e two two hex hex nu nuts ts (9 (93) 3) fr from om th the e Camr Camrol ols s (92) (92) an and d rem remov ove e the the Camrols from the throwout yoke (54).

2.

Remove Remo ve th the e ext exter erna nall sna snap p rin ring g (79 (79)) from from the the ro rollller er pi pin n (81 (81)) and and re remo move ve the roller pin, roller (84) and spring (81) from the neutral lock arm (80).

3.

Remove Remo ve th the e reta retain inin ing g ring ring (8 (83) 3) fro from m the the head headed ed pin pin (89 (89)) and and remo remove ve the headed pin and roller (84) from the roller pin (82).


101

Disassembly


4.

Remove Remo ve tw two o hex hex he head ad ca caps pscr crew ews s (85 (85)) from from th the e loc locat ator or de dete tent nt (8 (88) 8) an and d remove the detent from the clutch housing housin g (44).

All SP1 SP114, 14, SPE SPE1 114, SP2 SP21 11, SPE SPE214 214,, SP3 SP314, 14, SPE SPE314 314,, SP3 SP314S 14SB, B, RFD214 RFD 214 and RFD RFD314 314 Ser Series ies 5.

Loosen Loos en th the e set set sc scre rew w (77 (77)) tha thatt sec secur ures es th the e sto stop p col collar lar (76 (76)) (if (if us used ed)) on on the operating shaft (55) and remove the stop collar.

6.

Remove Remo ve th the e hex hex-h -hea ead d cap capsc scre rew w fro from m the the th thro rowou woutt yok yoke e (54 (54). ). Tap on one e end of the operating shaft gently to expose one of the woodruff keys (56). Remove the key. Do the same for the other side of the shaft to remove the other key. Remove the operating shaft from the clutch housing (44) and throwout yoke.

7.

Remove Remo ve th the e two two grea grease se fit fitti ting ngs s (57) (57) fro from m the the outs outsid ide e of th the e hous housin ing g near the operating shaft holes only if replacement of the parts is necessary.

Proceed to Clutch Shaft and Housing Disassembly: Ten main bearing configurations configura tions are illustrated. illustrat ed. Refer to the Twin Disc Power P ower Take-Off Reference Listing in the Description and Specifications section to determine which configuration is used in your PTO.

Skip to: Clutch Shaft and Housing Disassembly - Configuration A Clutch Shaft and Housing Disassembly - Configuration B Clutch Shaft and Housing Disassembly - Configuration C Clutch Shaft and Housing Disassembly - Configuration D Clutch Shaft and Housing Disassembly - Configuration E Clutch Shaft and Housing Disassembly - Configuration F Clutch Shaft and Housing Disassembly - Configuration G Clutch Shaft and Housing Disassembly - Configuration H Clutch Shaft and Housing Disassembly - Configuration I Clutch Shaft and Housing Disassembly - Configuration J

102


Disassembly


Clutch Shaft and Housing Disassembly - Configuration A Refer to the BOM and exploded and exploded views in the Illustrations section of of this manual and the main bearing housing configuration below.


Bearing Retainer (38)

Washer (36)

Retainer Clip (37)

Plug (43)

Bearing Bearing Bearing Cup Cone Cone (39) (40) (41)

Housing (44)

Bearing Cup (42)

Fitting (57)

Figure 27. Illustration - Configuration A

1.

Suppor Supp ortt the the pt pto o on on the the be benc nch h wit with h the the in inpu putt end end up up.. Rem Remov ove e the the he hex x head capscrew (35), lock washer (36) and the retainer clip (37) so the bearing retainer (38) may be rotated.

2.

Rota Ro tate te the the bea beari ring ng ret retai aine nerr coun counte terr-cl cloc ockw kwis ise e to rem remov ove e it. it.

3.

Lift the Lift the cl clut utch ch sh shaf aftt (33) (33) wit with h the the two two bea beari ring ng co cone nes s (40 (40 & 41) 41) fro from m the the housing. The forward bearing cup (39) will come out with the shaft and bearing cones.

4.

Use an ar arbo borr pre press ss to re remo move ve th the e bea beari ring ng co cone nes s fro from m the the cl clutc utch h sha shaft ft.. The bearing cones remove in opposite directions from the shaft shoulder.


103

Disassembly

104


5.

Remove Remo ve th the e rea rearr bea bearin ring g cup cup (4 (42) 2) fr from om th the e hou housi sing ng by re remo movi ving ng th the e two two plugs (if used) from the access holes in the housing and tapping the race from the bore through the holes using a blunt punch.

6.

Remo Re move ve th the e gr grea ease se fi fitt ttin ing g (5 (51) 1) fr from om th the e ho hous usin ing. g.


Disassembly


Clutch Shaft and Housing Disassembly - Configuration B Refer to the BOM and exploded views in the Illustrations section of this manual and the main bearing housing configuration below.

Hex Head Retainer Capscrew (38) (35)

Bearing (43)

Housing (44)

Fitting (51)

Fitting (50)

Fittings (57)

Retainer Retainer Hex Head (64) Clip Capscrew (63) (65)


Bearing Cup (42)

Figure 28. Illustration - Configuration B

1.

Suppor Supp ortt the the pto pto on th the e benc bench h with with the the ou outp tput ut en end d up. up. The There re sh shou ould ld be be a clearance below the input end of the clutch shaft. Remove the hex head capscrews (65) and the retainer clip (63) so the bearing retainer (64) may be rotated.

2.

Rota Ro tate te the the bea beari ring ng ret retai aine nerr coun counte terr-cl cloc ockw kwis ise e to rem remov ove e it. it.

3.

Lift the Lift the clu clutc tch h shaf shaftt (33) (33) wit with h the the two two bear bearin ing g con cones es (4 (40 0 & 41) 41) and and the the rear bearing cup (42) from the housing. The T he inner race of the front bearing (43) will be removed with the shaft and bearing cones.

4.

Use a sp Use split lit-ty -type pe be bear arin ing g pul pulle lerr or ar arbo borr pre press ss to re remov move e the the in inne nerr rac race e of the front bearing (43) from the clutch shaft.

5.

Use an ar arbo borr pre press ss to re remo move ve th the e bea beari ring ng co cone nes s fro from m the the cl clutc utch h sha shaft ft.. The bearing cones remove in opposite directions from the shaft shoulder.

6.

Turn the Turn the hou housi sing ng ov over er on on the the ben bench ch and and se secu cure rely ly sup suppo port rt itit with with the the in inpu putt end up. Remove the hex head capscrews (35) and bearing retainer (38).


105

Disassembly

106


7.

The oute The outerr race race of the the fr fron ontt bear bearin ing g (43 (43)) shou should ld eas easilily y slid slide e out out of th the e housing bore. If not, tap out from inside the housing.

8.

Remove Remo ve the the for forwa ward rd bea beari ring ng cu cup p (39 (39)) from from the the hou housi sing ng by by tapp tappin ing g the the race from the bore from the inside of the housing toward the output end.

9.

Remo Re move ve th the e gre greas ase e fit fitti ting ngs s (50 (50 & 51) 51) fr from om th the e hou housi sing ng..


Disassembly


Clutch Shaft and Housing Disassembly - Configuration C & D Refer to the BOM and exploded and exploded views in the Illustrations section of this manual and the main bearing housing configurations below.

Housing Hex Head Washer Retainer Bearing Carrier Capscrew (36) Clip (44) (47) (35) (37)

Bearing Bearing Bearing Bearing Bearing Retainer Cup Cone Cone Cup (38) (39) (40) (41) (42)

Fitting (57)

Plug (52)

Hex Head Capscrew (48) & Washer (49)

Figure 29. Illustration - Configuration C

Hex Head Washer Capscrew (36) (35) Wear Sleeve (67)

Oil Seal O-Ring (68) (78)

Breather (72)

Housing (44)

Bearing Carrier (47) Oil Seal (70)

Retainer Clip (37)

Wear Sleeve (69)

Bearing Bearing Bearing Bearing Bearing Retainer Cup Cone Cone Cup (38) (39) (40) (41) (42) Oil Level Check Plugs (94) (not shown) in sides of bearing housing

Fitting (57)

Pipe Plug (71)


Plug (52)

Figure 30. Illustration - Configuration D


107

Disassembly


1.

Tur urn n the the powe powerr take take-o -off ff ho hous usin ing g with with att attac ache hed d part parts s over over on on the the benc bench. h. Support the housing so the output end of the clutch shaft faces up and is free to rotate. There should be a clearance cleara nce below the input end of the clutch shaft.

2.

Remo Re move ve he hex x hea head d cap capsc scre rews ws (4 (48) 8) an and d rem remov ove e the the su supp ppor ortt pla plate te if us used ed..

3.

Lift the Lift the clu clutc tch h shaf shaftt (33) (33) and and bea beari ring ng car carri rier er (47 (47)) unit unit fro from m the the clut clutch ch housing (44).

4.

Secure Secu re the the bea beari ring ng ca carr rrie ierr with with at atta tach ched ed pa part rts s in a larg large e vis vise e wit with h protective jaws, with the input end of the shaft facing up, gripping the rear cast section of the bearing carrier in i n the vise.

5.

Remo Re move ve th the e hex hex he head ad ca caps pscr crew ew (3 (35) 5),, was washe herr (36 (36)) and and re reta tain iner er cl clip ip (3 (37) 7)..

6.

Remo Re move ve th the e bea beari ring ng re reta tain iner er (3 (38) 8) be ro rota tatin ting g itit cou count nter ercl cloc ockw kwis ise. e.

(Configuration on C skip to step 9 ) Configuration D only (Configurati 7.

Remo Re move ve th the e o-r o-rin ing g sea seall (78 (78)) fro from m the the O.D O.D.. of of the the be bear arin ing g ret retai aine nerr.

8.

Tap th the e oil oil se seal al (6 (68) 8) ou outt of of the the be bear arin ing g ret retai aine nerr.

Configurations C & D 9.

Lift the Lift the clu clutc tch h shaf shaftt with with bea beari ring ng cup cup (39 (39)) and and bear bearin ing g cone cones s (40 (40 & 41) 41) from the bearing carrier. Note: Configuration D only : Two wear sleeves (67 & 69) will come out with the shaft and bearing cones.

10.

Use an arbo arborr press press or bear bearing ing pul puller ler to remo remove ve the the bear bearing ing con cones es from from the clutch shaft only if replacement is necessary. The bearing cones remove in opposite directions from the shoulder machined on the clutch shaft.

Configuration D only (Configurati (Configuration on C skip to step 12 ) 11.

To remov remove e the the two two wear wear slee sleeves ves,, use use a spli split-t t-type ype bea bearin ring g pulle pullerr. Note: Remove the wear sleeves only if they must be replaced.

108


Disassembly



Remove the rea Remove rearr bear bearing ing cup fro from m the the bear bearing ing car carrie rierr by by remo removin ving g the the two plugs (52) from the bearing carrier and tapping ta pping the bearing cup (42) from the bearing carrier through the holes using a blunt punch. Remove the race only if replacement is necessary. necessary.

Configuration Configuratio n D only: (Configuratio (Configuration n C skip to step 15 ) 13.. 13

Knock Kno ck the oil se seal al (70 (70)) out out of the be bear aring ing ca carri rrier er (47 (47). ).

14.. 14

Remove the bre Remove breath ather er (72 (72)) and and the the two oil oil fill fill chec check k plugs plugs (94 (94)) from from the the sides of the bearing carrier. car rier.

Configuration C only: 15.. 15

Remo Re move ve the the gre greas ase e fitti fitting ngs s (51) (51) fro from m the the bear bearing ing ca carr rrie ierr.


109

Disassembly


Clutch Shaft and Housing Disassembly - Configuration E Refer to the BOM and exploded and exploded views in the Illustrations section section of of this manual and the main bearing housing configuration below.

Housing (44)

Internal Snap Ring (75)

Fitting (57)

External Snap RIng (58)

Bearing (40)


Fitting (51)

Washer (49)

Bearing Carrier (47)


Figure 31. Illustration - Configuration E

110

1.


2.

Remove Remo ve he hex x hea head d cap capsc scre rews ws (4 (48) 8) an and d wash washer ers s (49 (49)) and and re remo move ve th the e support plate if used.

3.

Lift the Lift the clu clutc tch h shaf shaftt (33) (33) and and bea beari ring ng car carri rier er (47 (47)) unit unit fro from m the the clut clutch ch housing (44). The main bearing (40) will be removed with the shaft shaft and bearing carrier.

4.



Disassembly


5.

Remo Re move ve th the e in inte tern rnal al sn snap apri ring ng (7 (75) 5) fr from om th the e be bear arin ing g car carri rier er..

6.

Remove the sha Remove shaft ft an and d bea bearin ring g from from the bea bearin ring g car carrie rierr (47) (47).. IfIf nece necessa ssary ry,, the bearing carrier may be gently tapped off the bearing.

7.

Remo Re move ve th the e two two ex exte tern rnal al sn snap ap ri ring ngs s (58 (58 & 59) 59)..

8.

Use Us e an an arb arbor or pr pres ess s to to pre press ss th the e sha shaft ft ou outt of of the the be bear arin ing g (40 (40). ).

9.

Remo Re move ve th the e gre greas ase e fit fitti ting ng (5 (51) 1) fr from om th the e bea beari ring ng ca carr rrie ierr.


111

Disassembly


Clutch Shaft and Housing Disassembly - Configurations F & G Refer to the BOM and exploded and exploded views in the Illustrations section section of of this manual and the main bearing housing configuration below.

Bearing Retainer (38)

Bearing (40)


Fitting (57)

Fitting (51)


Bearing (41)

Housing (44)

Washer (49)


Figure 32. Illustration - Configuration F Housing (44)

Bearing (41)

Oil Seal Bearing Bearing (68) Retainer (40) (38)



Fitting (51)

Oil Seal (70)

O-Ring (78) Fitting (57)

Washer (49)


Figure 33. Illustration - Configuration G

112


Disassembly


1.


2.

Remove Remo ve he hex x hea head d cap capsc scre rews ws (4 (48) 8) an and d wash washer ers s (49 (49)) and and re remo move ve th the e support plate if used.

3.

Lift the Lift the clu clutc tch h shaf shaftt (33) (33) and and bea beari ring ng car carri rier er (47 (47)) unit unit fro from m the the clut clutch ch housing (44).

4.


5.

Remo Re move ve th the e int inter erna nall sna snap p rin ring g (75 (75)) fro from m the the be bear arin ing g car carrie rierr (47 (47). ).

6.

Remove the bearing retainer (38).

7.

Lift the Lift the clu clutc tch h shaf shaftt with with the the two two bea beari ring ngs s (40 (40 & 41 41)) from from the the be bear arin ing g carrier.

8.

Use an ar Use arbo borr pres press s to re remo move ve the the bea beari ring ngs s from from the the clu clutc tch h shaf shaft. t. The The bearings remove in opposite directions from the shaft shoulder.

9.

Remo Re move ve th the e fit fitti ting ng (5 (51) 1) fr from om th the e bea beari ring ng re reta tain iner er..

Configuration G only: 10.. 10

Remo Re move ve th the e o-r o-rin ing g (78 (78)) fro from m the the be bear arin ing g ret retai aine nerr.

11.

Tap the the fro front nt oil oil sea seall (68) (68) out out of of the the bear bearin ing g reta retain iner er..

12.. 12

Remov Rem ove e the the rea rearr oil oil seal seal (70 (70)) from from the the bea beari ring ng car carrie rierr.


113

Disassembly


Clutch Shaft and Housing Disassembly - Configurations H & I Refer to the BOM and exploded views in the Illustrations section of this manual and the main bearing housing configuration below.

Housing (44)

Fitting (51)

External Snap Ring (75)

Bearing (40) Hex Head Capscrew (35)

Fitting (57)

Dowel (61)

Plug (63)



Sheave Housing (60)

Bearing External Fitting Snap Ring (50) (41) (73)

Bearing Hex Head Retainer Capscrew (64) (65)

Figure 34. Illustration - Configuration H Housing (44)

Fitting (51)

Bearing Wear Sleeve (40) (67)


Washer Hex Head (36) Capscrew (35)

Bearing (41)

Shim (95)

Fitting (50)

Plug (63)

Fitting (57)

Dowel (61)


Sheave Housing (60)

Bearing Washer Hex Head Capscrew Retainer (66) (65) (64)

Figure 35. Illustration - Configuration I

114


Disassembly


1.

Remo Re move ve th the e hex hex he head ad ca caps pscr crew ews s and and re remo move ve th the e sup suppo port rt pla plate te..

2.

Securely Secur ely su supp pport ort the pto so the ou outp tput ut en end d of of the the clu clutc tch h shaf shaftt fac faces es up and is free to rotate. There T here should be a clearance below the input i nput end of the clutch shaft.

3.

Remove Remo ve th the e hex hex he head ad ca caps pscr crew ews s (48 (48)) tha thatt sec secur ure e the the sh shea eave ve ho hous usin ing g (60) to the clutch housing (44) and remove the sheave housing. Note: The inner race of bearing (41) will remain on the shaft.

4.

Remove the sheave from the shaft.

5.

Remove th Rem the he hex he head ca capscr cre ews (65) an and (Configuration I only) washers (66) and remove the rear bearing retainer (64) from the sheave housing.

Configuration I only: (Configuration H skip to step 7 ) 6.

Remo Re move ve th the e shi shim m (95 (95)) fro from m on on top top of th the e bea beari ring ng..

Configurations H & I: 7.

Remove Remo ve th the e out outer er ra race ce of be bear arin ing g (41 (41)) fro from m the the she sheav ave e hou housi sing ng.. If necessary, remove plugs (63) and tap the race out using a punch through the plug holes.

8.

Remo Re move ve th the e fit fitti ting ng (5 (50) 0) fr from om th the e bea beari ring ng re reta tain iner er..

9.

Remove th Rem the he hex he head ca capscr cre ews (35) an and (Configuration I only) washers (36), and remove the front bearing retainer (38) from the clutch clutc h housing (44).

skip to step 15 ) Configuration H only: (Configuration I skip to 10.

Lift the clu Lift clutch tch shaf shaftt (33) (33) with with the the inner inner race races s of the the front front and and rear rear bea bearin rings gs (40 & 41) and external snap rings (73 & 75) from the clutch housing.

11.

Remove Remo ve the the rear rear ext extern ernal al snap snaprin ring g (73) (73) from from the out output put end of the the shaf shaft. t.

12.

Using a spl Using split-t it-type ype bea bearing ring pul puller ler,, remov remove e the the inner inner race of the rea rearr bearin bearing g (41) from the shaft.

13.. 13

Remo Re move ve the the fro front nt ext exter erna nall snap snap rin ring g (75) (75) fro from m the the shaf shaftt


115

Disassembly


14.

Using a spl Using splitit-typ type e beari bearing ng pulle pullerr, remov remove e the the inner inner rac race e of the fro front nt bear bearing ing (40) from the shaft.

Configuration I only:

116

15.

Lift the clu Lift clutch tch shaf shaftt (33) (33) with with the the inner inner race races s of the the front front and and rear rear bea bearin rings gs (40 & 41) and the wear sleeve (67) from the clutch housing.

16.

Using a spl Using split-t it-type ype bea bearing ring pul puller ler,, remove remove the inne innerr race race of the the rea rearr bearin bearing g (41) from the shaft.

17.

Using a spl Using splitit-typ type e beari bearing ng pulle pullerr, remov remove e the the inner inner rac race e of the fro front nt bear bearing ing (40) from the shaft.

18.. 18

Remove the wea Remove wearr sleev sleeve e (67) (67) onl only y if itit must must be be repl replace aced. d. Use Use a spl splitittype bearing puller to remove the wear sleeve.


Disassembly


Clutch Shaft and Housing Disassembly - Configuration J Refer to the BOM and exploded and exploded views in the Illustrations section section of of this manual and the main bearing housing configuration below.

Hex Head Washer Retainer Bearing (36) Retainer Capscrew Clip (38) (35) (37)

Housing (44)

Fitting (51)

External Bearing (40) Snap RIng (58)

Figure 36. Illustration - Configuration J

1.

Suppor Supp ortt the the pt pto o on on the the be benc nch h wit with h the the in inpu putt end end up up.. Rem Remov ove e the the he hex x head capscrew (35), lock washer (36) and the retainer clip (37) so the bearing retainer (38) may be rotated.

2.

Rota Ro tate te th the e bea bearin ring g ret retai aine nerr (35 (35)) cou count nter er-c -clo lock ckwis wise e to to rem remov ove e it. it.

3.

Lift Li ft th the e clu clutc tch h sha shaft ft (3 (33) 3) wi with th th the e bea beari ring ng (4 (40) 0) fr from om th the e hou housi sing ng..

4.

Remove th the ex external sn snapring (5 (58).

5.

Use Us e an ar arbo borr pre press ss to to rem remov ove e the the bea beari ring ng fr from om the the clu clutc tch h sha shaft ft.. Note: The external snapring is supplied with the new bearing.

6.

Remo Re move ve th the e gr grea ease se fi fitt ttin ing g (5 (51) 1) fr from om th the e ho hous usin ing. g.


117

Disassembly


NOTES

118


Cleaning and Inspection



Cleaning and Inspection Refer to the BOM, the exploded ex ploded views in the Illustrations section section and and the Engineering Drawings n near ear the back of this manual.

Bearings 1.

Thorough Thorou ghly ly was wash h bear bearing ings s in in clea clean n sol solven ventt ifif the they y have have be been en in ser servic vice. e. Soak bearings in solvent if they are particularly dirty.

Never dry bearing with compressed air. Do not spin bearings while they are not lubricated. Oil bearings with SAE 10 engine oil immediately after cleaning. Be sure bearings are oiled before inspection. Protect clean bearings, whether they are new or have been in service, from dirt, dust, grit or any other contaminant.

2.

Inspec Insp ectt bear bearin ings gs for for rou rough ghne ness ss of of rota rotati tion on.. Repl Replac ace e the the bear bearin ing g if roughness is found.

3.

Inspect Inspe ct be beari aring ngs s for for co corro rrosio sion, n, sc scor ored, ed, sc scrat ratch ched, ed, cr crack acked ed,, pitt pitted ed or chipped races, and for indication of excessive wear of balls or rollers. If one of the these defects is found, replace the bearing.

Preventing Entrance of Dirt Into Bearings 4.

Dirt and Dirt and gr grit it in in bea beari ring ngs s are are of ofte ten n res respo pons nsib ible le fo forr bea beari ring ng fa faililur ure. e. Consequently, it is important to keep bearings clean. Do not remove grease from new bearings. Keep the wrapper on new bearings until immediately before they are to be installed. Do D o not expose new clean bearings until they are ready to be used in the assembly. Keep them wrapped in clean lint-free cloth or paper to keep out dust and debris. Protect bearings from contamination even after they are installed on the shaft or in the bore.


119



Housings, Cast Parts and Machined Surfaces 5.

Repl Re plac ace e cas castt par parts ts or ho hous usin ings gs th that at ar are e cra crack cked ed..

6.

Inspect Inspe ct be beari aring ng bo bores res for gr groov ooved ed,, burr burred ed or ga galle lled d con condit dition ions s that that would indicate that the bearing has been turning in its housing. If the damage cannot be repaired to like-new condition with a crocus cloth, replace the part. part. Bore diameters must not exc eed the maximum dimension shown in Wear Limits the Description and Description and Specifications section of this manual. Closely check bearing bore for damage. Check threads or pilot for damage. Check face for damage.

Typical Bearing Carrier or Housing bore area

Figure 37. Inspect the bores, threads and faces

7.

Inspec Insp ectt bore bores s for for wear wear,, groo groove ves, s, scr scrat atch ches es and and dir dirt. t. Rem Remov ove e burr burrs s and scratches with crocus cloth or a soft stone. Replace parts that are deeply grooved or scratched.

8.

Inspect Inspe ct oil an and d gre grease ase pa pass ssage ages s for for ob obstr struc uctio tions ns.. If If an an obst obstruc ructio tion n is is found, remove it with compressed air or by working a wire or wire brush back and forth through the passage and flushing it with solvent.

All grease and oil passageways must be clean.

Figure 38. Be sure passageways are clean. 120




Shafts, seal lip contact surfaces and bearing journals 9.

Inspec Insp ectt mach machin ined ed sur surfa face ces s for for burr burrs, s, scr scrat atch ches es,, nick nicks s and and fore foreig ign n matter. If such defects cannot be removed with crocus cloth or a soft stone, replace the part.

10.. 10

Inspect Inspe ct beari bearing ng jour journal nals s on the the shaf shaftt for for groove grooved, d, burr burred ed or or galle galled d conditions that would indicate that the bearing has been turning on the shaft. If the damage cannot be repaired to like-new condition with a crocus cloth, replace the part. Bear ing journal diameters must not be less than the dimensions shown i n Wear Limits the Description and Specifications section of this manual.

11.

Inspect Inspe ct the the pilo pilott beari bearing ng jou journ rnal al on the clu clutc tch h shaf shaft. t. If If it is worn worn in any any way,, or if it shows signs that the pilot bearing has been turning way turni ng on the journal, replace the clutch clutch shaft. Pilot bearing journal diameters must not be less than the dimensions shown in Wear Limits the Description and Specifications section of this manual.

1

6

Small Shoulder

7

2

Large Shoulder

8 3

9

4

5

10

Figure 39. Inspect bearing journals and seal journals


121



12.

Inspect sea Inspect seall journa journall surfa surfaces ces on the shaf shaft. t. Look Look espe especial cially ly for scra scratch tches es or nicks that extend above the shaft surface. If they cannot be removed using a fine crocus cloth, replace the part. S eal journal diameters must not be less than the dimensions show n in Wear Limits the Description and Specifications section of this manual.

13.. 13

Inspectt seal Inspec seal lip con conta tact ct surfa surfaces ces on on wear wear sleev sleeves es and and other other surfa surface ces. s. Look especially for scratches or nicks that intersect with or cross the lip contact area. If they cannot be removed using a very fine crocus cloth, replace the part.

14.. 14

Inspect Inspe ct threa threade ded d open opening ings s for for damag damaged ed thre thread ads. s. Chase Chase da damag maged ed threads with a tap of the correct size.

15.. 15

Be sure sure the sna snap p ring ring gro groove oves s have have stra straigh ightt sides sides,, espec especial ially ly ifif a bearing failure has occurred.

Straight sides

Damaged Wall

Undamaged Groove

Damaged Groove

Figure 40. Snap ring grooves must have square sides

122


Assembly


Assembly The following procedure is for complete assembly of the unit. Prior to this procedure, the power take-off should be removed from the engine. Qualified Qualifi ed personnel should do the work in a fully equipped facility. facility. Note: Illustrations used here are to aid in understanding and completing the procedure, and may not appear to be consistent with the previous assembly steps. Note: Ten main bearing configurations are illustrated. Refer t o the Twin Disc Power Take-Off Reference Listing i in n the Description and Specifications section to determine which configuration is used in your pto.


123

Assembly


Clutch Assembly Refer to the Twin Disc Power Take-Off Reference Listing Desc ription Lis ting in the Description and Specifications and Specifications section, the exploded views in the Illustrations section and Engineering Drawings near the back of this manual.

Bronze Throwout Collar only: (Ball Bearing Beari ng Type Type Throwout Collar skip to step 3. ) ) 1.

Lubrica Lubri cate te th the e sho should ulder er of the sli slidin ding g sle sleeve eve (27 (27)) with with No No.. 30 30 eng engin ine e oil oil prior to installation of the split collar. Place the throwout collar halves over the sliding sleeve shoulder. Install 2 hex head capscrews 1/2” - 20 x 3 1/4” through the halves. Install Inst all 2 hex nuts on the capscrews. Torque the capscrews to the proper specifications given in Torque Values Values for f or Fasteners in the Installation section.

Sliding Sleeve

18 Capscrew 19 20 Collar Halves

23

22

21

Nut

Figure 41. Assembly of Bronze Throwout Collar

2.

124

Check collar rotation t o be sure it turns freely on the sliding sleeve. (Proceed at step 8.)


Assembly


Ball Bearing Type Throwout Collar 3.

Place Plac e the the sl slid idin ing g sle sleev eve e (27) (27) on th the e bed bed of a pre press ss wit with h the the be bear arin ing g end end up. Place the external snap ring (31) on the sleeve sle eve before the bearing is installed.

Figure 42. Assembly of Ball Bearing Type Type Throwout Collar

4.

Press Pres s the the ball ball bea beari ring ng (3 (30) 0) on on the the slee sleeve ve.. Pres Press s tigh tightt to st stop op aga again inst st the the shoulder. Note: Pack the bearing with grease before installing it on the collar.

against the inner race of the bearing. Note: Apply force only against Pressing against the outer race or contact with wit h the balls will damage the bearing, leading to premature failure. 5.

Inst In stal alll the the ex exte tern rnal al sn snap ap ri ring ng (2 (29) 9) to se secu cure re th the e bea beari ring ng..

6.

Installll th Insta the e thr throwo owout ut co colla llarr (28) (28) ov over er th the e bea bearin ring. g. Sea Seatt the the co colla llarr tigh tightt against the bearing.

Excessive pressure or sharp impact against the outer race of the bearing during installation of the collar will damage the bearing, leading to premature failure.

7.

Turn th Turn the e slid slidin ing g slee sleeve ve as asse sembl mbly y ove overr on on the the be bed d of of the the pr pres ess. s. Ins Insta tallll the the internal snap ring (31) in the collar.


125

Assembly


Assem As sembl ble e th the e pl plat ate e st stack ack 8.

Set th the e hub hub an and d bac back k pla plate te (4 (4)) on on a be benc nch h wit with h the the th thre read aded ed an and d spl splin ined ed section facing up.

9.

Inst In stal alll a fri frict ctio ion n pla plate te (6) (6) on on the the hub hub-a -and nd-b -bac ackp kpla late te..

Figure 43. Typical SP111, SP111, SP211 and SP311 Plate Stack (SP311 is shown)

SP214, SPE214, SP314, SPE314, SP314SB, RFD214 and RFD314 Series clutches o nly: (SP114 and SPE114 SPE114 Series Clutches, Clut ches, skip to step ste p 14.) 10.

Installl a cent Instal center er plat plate e (7) (7) so it rest rests s flat flat on on the the frict friction ion pla plate, te, mes meshin hing g the the splines of the center plate and hub-and-backplate.

11.

Inst In stal alll a sec secon ond d fric fricti tion on pla plate te (6) (6) on on the the cent center er pla plate te..

SP314, SPE314, SP314SB and RFD314 Series clutches clutches only: (SP214, SPE214 and RFD214 Series clutches, ski p ski p to step 14.)

126

12.. 12

Installll a seco Insta second nd cen center ter plat plate e (7) (7) so itit rests rests flat flat on the sec secon ond d fricti friction on plate, meshing the splines of the center plate and hub-and-backplate hub-and-backplate..

13.

Insta Ins tallll a thi third rd fric frictio tion n plate plate on the the seco second nd cent center er plat plate e assem assembly bly..


Assembly


SP114, SPE114, SP214, SPE214, SP314, SPE314, SP314SB, RFD214 SP114, and RFD RFD314 314 Ser Series ies clu clutch tches: es: 14.

Installl the Instal the press pressure ure pla plate te (8) (8) on the the top top fric frictio tion n plate plate,, meshin meshing g the spl spline ines s of the center plate and hub-and-backplate.

15.

Install the adj Install adjusti usting ng lock lock pin spri spring ng (24) (24) into the poc pocket ket in the the pres pressur sure e plate and install the adjusting lock pin (25) on the spring.

Figure 44. Illustration - Levers, Links, Sleeve, Throwout Collar

16.. 16

Push down Push down on on the the pin, pin, comp compres ressi sing ng the the spr spring ing whi while le scre screwin wing g the the adjusting yoke (26) partially onto the threaded part of the hub-and-back hub-and-bac k plate.

17.

Place the lev Place levers ers (9) bet betwee ween n the the lug lugs s of of the the pre pressu ssure re pla plate te and sec secure ure to the pressure plate with four clevis pins (11). (11). w hile Note: Hook each lever under the edge of the adjusting yoke while aligning the clevis pin hole with the t he holes in the pressure plate lugs.


127

Assembly


18.

Place a was Place washer her (10 (10)) on eac each h clevi clevis s pin pin and and insta installll four four cot cotter ter pin pins s (12). (12). Spread the legs of the cotter pins as shown below.

Legs do not extend outside this area.

29.4 mm. (1.16 in.) Diameter (12) 23.8 mm. (0.94 in.) Diameter (13 & 17)

14.7 mm. (0.58 in.) Radius (12) 11.9 mm. (0.47 in.) Radius (13 & 17)

Figure 45. Spread the cotter pin legs

128

19.

Attach eig Attach eight ht leve leverr links links (15 (15)) one one on eac each h side side of each each of the fou fourr clutc clutch h levers (9). Secure with four clevis pins (14) and four cotter cotter pins (13).

20.. 20

Place the Place the prepre-as assem semble bled d slidin sliding g sleev sleeve e (27) (27) on the the adju adjusti sting ng yoke yoke,, aligning the four lugs between the four pairs of lever links.

21.. 21

Attach the link Attach links s to the the slid slidin ing g sleev sleeve e with with four four clev clevis is pins pins (16 (16)) and and four four cotter pins (17).

22.

Install the hos Install hose e fittin fitting g (18) (18) in in the the collar collar trun trunnio nion, n, and and attac attach h the the flexi flexible ble hose (19), hose fitting (20) and lubrication fitting (23).


Assembly


Center the clutch plates 23.. 23

Visually Visua lly cen center ter the the frict frictio ion n plates plates (6) on on the the clutch clutch and ali align gn the the teet teeth. h. Press down on the collar assembly to lock the plates in place. If necessary, pull the adjustment lock pin to compress the lock pin spring, sprin g, and rotate the adjusting yoke assembly until the plates are locked in position when the collar is pressed down. Note: This is an initial setting to hold the plates in place until after the pto is mounted on the engine, so it is imperative that the teeth be exactly aligned aligned and the plates are exactly centered on the clutch. The driving ring may be used as an alignment fixture to align the teeth and center the plates relative to the hub-and-backplate so they are perfectly aligned when the pto is installed on the engine. Perfectly center the clutch in the drive ring. (This gap is to be exactly equal all the way around.)

Driving Ring (1) Teeth Wooden block (use 3) to hold driving ring in position

Bench

Figure 46. Align the Plate Stack


129

Assembly


Proceed to Clutch Shaft and Housing Assembly: Ten main bearing configurations configura tions are illustrated. illustrat ed. Refer to the Twin Disc Power P ower Take-Off Reference Listing in the Description and Specifications section to determine which configuration is used in your PTO.

Skip to: Clutch Shaft and Housing Assembly - Configuration Conf iguration A Clutch Shaft and Housing Assembly - Configuration B Clutch Shaft and Housing Assembly - Configuration C Clutch Shaft and Housing Assembly - Configuration D Clutch Shaft and Housing Assembly - Configuration E Clutch Shaft and Housing Assembly - Configuration F Clutch Shaft and Housing Assembly - Configuration G Clutch Shaft and Housing Assembly - Configuration H Clutch Shaft and Housing Assembly - Configuration I Clutch Shaft and Housing Assembly - Configuration J

130


Assembly


Clutch Shaft and Housing Assembly - Configuration A Refer to the Twin Disc Power Take-Off Reference Listing in the the Description List ing in and Specifications and Specifications section, t he he exploded exploded views in the Illustrations section and Engineering Drawings near the back of this manual.


Washer (36)

Retainer Clip (37)

Bearing Bearing Bearing Bearing Retainer Cup Cone Cone (38) (39) (40) (41)

Plug (43)

Bearing Cup (42)

Housing (44)

Fitting (57)

Figure 47. Illustration - Configuration A

Instal Ins talll mai main n bea bearin rings gs on the clu clutch tch sha shaft ft 1.

Clean Clea n the the tape tapere red d bear bearin ing g cone cones s (40 (40 & 41) 41) and and clu clutc tch h shaf shaftt (33) (33) wit with h isopropyl solvent to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

2.

Use an Use an arb arbor or pr pres ess s to to insta installll the the two be bear arin ing g con cones es on th the e clu clutc tch h sha shaft ft.. Install the cones, one from each end, with the back faces (wide section) butting against the shoulder on the clutch shaft. (See note below regarding alternative installation method. ) Note: Special tools are not available from Twin Disc, Inc., but can be fabricated in any capable machine shop. Note: Use a piece of steel tubing approximately 5 cm. (2 inches)


131

Assembly


longer than the distance from the end of the shaft to the shoulder and just slightly larger in inside diameter than the bearing cone’s inside diameter. diamet er. The tubing must not be thick enough to contact the cage of the bearing during installation. Note: I.D. of Press Tube is slightly larger than the I.D. of the bearing.

Note: Thickness of Press Tube wall must contact ONLY the inner race of the bearing. Note: Bearing must be pressed tight against the shoulder.

Press Ram Flat Plate (tool) Press Tube Bearing Cone (41)

Output end of Clutch Shaft (33)

Figure 48. Install bearing cones on the shaft

alternative method method to install install the bearing bearing cones cones is to Note: An alternative heat them in an oven at 135° C. (275° F.) F.) for one hour and install them immediately on the clutch shaft. Let the bearing cone cool to room temperature after installation while continuing to apply force as the bearing cools. This is necessary to ensure that it remains properly seated. 3.

After th After the e bea bearin rings gs ret retur urn n to to roo room m temp temper erat ature ure,, coa coatt the the be bear aring ing ro rolle llers rs and both bearing cups with a light film of clean No. 30 engine oil.

Clutch housing 4.

Set the Set the clut clutch ch ho hous usin ing g (44) (44) on on the the bed bed of a pr pres ess s with with the the in inpu putt end end of of the housing facing up. Note: There should be sufficient clearance below the housing to allow for installation of the clutch shaft.

132


Assembly


5.

Inst In stal alll 2 lub lubri rica cati tion on fi fitt ttin ings gs (5 (57) 7) if th they ey we were re rem remov oved ed..

6.

Use a rou Use round nd ste steel el pla plate te sli sligh ghtl tly y smal smalle lerr in di diam amet eter er tha than n the the oute outerr diameter of the rear main bearing cup (42). Place the bearing cup on the housing, back (wide section) face down. Be sure the plate does not press against the bearing cup’s roller contact surface in the cup. Press the cup to the bottom of the bore. Note: Special tools are not available from Twin Disc, Inc., but can be fabricated in any capable machine shop. Note: Instal Installati lation on Tip A scrap bearing cup the same size as the one being installed (41) may be used as an installation tool in addition to a flat plate. Press Ram Flat Plate (tool) Scrap Bearing Cup used upside down New Bearing Cup (42)

Housing (44) Press bearing cup to bottom of the bore.

Figure 49. Install the rear bearing cup (42)

Instal Ins talll the clu clutch tch sha shaft ft and bea bearin rings gs int into o the ho housi using ng.. 7.

Careful Caref ully ly in insta stallll sh shaft aft an and d bea bearin rings gs in the ho hous usin ing. g. The ou outp tput ut en end d of of the the shaft must enter the housing first. bearings prior to installation into Note: DO NOT pre-grease the bearings the housing.

8.

Instal Inst alll the the fro front nt bea beari ring ng cup cup (39 (39)) in th the e bor bore e on on top top of the the up uppe perr bea beari ring ng cone. Press it tight against the cone.

9.

Instal Inst alll the the bear bearin ing g reta retain iner er (38 (38)) in th the e hous housin ing. g. Thr Threa ead d the the bear bearin ing g reta retain iner er tight against the bearing. Note: The notches must be up.


133

Assembly


(Preliminary setting) Measure and set bearing end play.

The only approved method for adjustment of tapered roller bearings in Twin Disc Power Take-Offs is by use of a dial indicator to read actual bearing end play. This preliminary setting sett ing is for assembly assem bly purposes only. Final bearing end play must be adjusted as described below in “(Final setting) Measure and set bearing end play.”

10.

Tighten the bea Tighten bearing ring ret retaine ainerr until until 6.8 Nm. (60 in.in.-lbs. lbs.)) of of torqu torque e is requ required ired to rotate the shaft. Note: Do not overtighten! Damage may occur to the bearings or bearing retainer.

Rotate the shaft several revolutions. This aligns and seats the bearing beari ng cones in the bearing cups and creates a “zero” clearance. 11.

Note the pos Note positi ition on of any any one one of the the notc notches hes in in the bear bearing ing reta retaine inerr relati relative ve to the threaded hole for the retainer lock capscrew. Bearing Retainer Notches

Figure 50. Bearing Retainer Notches

For side-load applications: Back off the bearing retainer (38) to create a clearance between the bearing retainer and bearing cup. The notch closest to the threaded hole (aligned with or clockwise from the hole) is the first notch. SP114 Series with Bearing Retainer A3050: Back off 3 1/2 - 4 1/2 notches SP214, SP314 Series with Bearing Retainer B5183, A3308 or A3308B: Back off 2 3/4 3/4 - 3 3/4 notches 134


Assembly


For in-line applications: Back off the bearing retainer (38) to create a clearance between the bearing retainer and bearing cup. SP114 Series with Bearing Retainer A3050: Back off 4 1/2 - 5 1/2 notches SP214, SP314 Series with Bearing Retainer B5183, A3308 or A3308B: Back off 3 3/4 3/4 - 4 3/4 notches Note: Bump the output end of the shaft with w ith a soft mallet hard enough to move and seat the front bearing cup up against the bearing retainer and create the specified bearing clearance after each adjustment of the bearing retainer.


135

Assembly


(Final setting) Measure and set bearing end play 12.

Securely Secure ly supp support ort the uni unitt with with the the clut clutch ch shaf shaftt in a vertic vertical al posi positio tion n and and the output end up. Be sure the shaft is clear to rotate.

13.. 13

Attach Attac h an eyeb eyebolt olt in the the threa thread d at the the outp output ut end end of of the the shaf shaft. t. Att Attac ach ha hoist with a thrust bearing-equipped swivel hook to the eyebolt.

14.. 14

Securely Secure ly atta attach ch a dial dial indi indica cator tor to the the hous housing ing an and d locat locate e the the stem stem so so the tip is contacting the end of the shaft and movement of the tip is vertical, the same direction as the movement m ovement of the shaft. exactly vertical,

15.. 15

Lift the unit Lift unit off off the the suppo support rts s using using the the hoist. hoist. App Apply ly appr approx oxima imate tely ly 90.7 90.7 Kg. (200 lbs.) of downward force on the bearing carrier while dial indicator is being set. Mark a spot on the end of the shaft next to the stem as a starting reference point and set the dial indicator to “zero.”


Bearing Retainer Lock

Bearing Retainer

Note: Typical housing configuration is illustrated. Your housing may be designed differently.

Figure 51. Measuring and setting bearing end play

136


Assembly


16.. 16

Carefully Carefu lly and and gent gently ly lower lower the the unit unit bac back k onto onto the sup suppo port rts. s. All Allow ow the the hoist to go slack. Apply approximately 90.7 Kg. (200 lbs.) of downward force on the shaft while dial indicator reading is being taken. (The weight of the shaft will be considered part of the 90.7 Kg. (200 lbs.) Read the dial indicator to read actual bearing end play play..

17.. 17

Repeatt step Repea steps s 15 and and 16 16 to be be sure sure the the dial dial ind indica icato torr read reading ing re repea peats ts with accuracy. Adjust the bearing retainer retai ner as necessary to obtain 0.152 - 0.254 mm. (0.006 (0.0 06 - 0.010 in.) bearing beari ng end play. (See note below.)

18.. 18

Note: For in-line operation: Adjust the bearing retainer as necessary to obtain 0.229 - 0.305 mm. (0.009 - 0.012 in.) bearing end play. pl ay. . Once Onc e the the beari bearing ng end end play play ad adjus justme tment nt is is compl complete eted, d, matc match-m h-mark ark the bearing retainer and bearing housing so the bearing retainer may be removed and reinstalled in the same exact position. position.

19.. 19

After match After match-ma -marki rking ng the the bear bearing ing reta retaine inerr and and beari bearing ng hous housing ing,, remov remove e the bearing retainer (38) and front bearing cup (39).

20.

Remove the shaft and hand-pack the bearing cones (40 & 41) with grease specified in the lubrication specifications in the Maintenance section . See information regarding regardin g Filling the Main Bearing Cavity at initial assembly in the Description and Operation section of this manual. Note: Do not pack the bearing carrier cavity with grease. The proper amount of grease will be added later.

21.

Reinstallll the Reinsta the shaf shaftt with with beari bearings ngs,, front front bea bearing ring cup and bea bearing ring ret retaine ainerr. Position the bearing retainer exactly as as it was prior to removal. Realign the match-marks.

22.. 22

Installll the Insta the retai retaine nerr clip clip (37) (37),, hex hex head head cap capscr screw ew (35) (35) and and wash washer er (36) (36).. Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section. Note: Bump the output end of the shaft with a soft mallet hard enough to move and seat the front bearing cup up against the bearing retainer and create the specified bearing clearance after each adjustment of the bearing retainer.

(Proceed to Install the Operating Shaft and Throwout Yoke)


137

Assembly


Clutch Shaft and Housing Assembly - Configuration B Power er Take-Off Take-Off Reference Refer ence Listing in the Description Refer to the Twin Disc Pow and Specifications and Specifications section, t he exploded views in the Illustrations section and Engineering Drawings near the back of this manual.

Hex Head Retainer Capscrew (38) (35)

Bearing (43)

Housing (44)

Fitting (51)

Fitting (50)

Retainer Retainer Hex Head (64) Clip Capscrew (63) (65)


Fittings (57)

Bearing Cup (42)

Figure 52. Illustration - Configuration B

Instal Ins talll mai main n bea bearin rings gs on the clu clutch tch sha shaft ft 1.

Clean the tap Clean taper ered ed be bear aring ing co cone nes s (40 (40 & 41) 41) an and d clut clutch ch sh shaft aft wit with h iso isopr propy opyll solvent to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

2.

Use an Use an arb arbor or pr pres ess s to to insta installll the the two be bear arin ing g con cones es on th the e clu clutc tch h sha shaft ft.. Install the cones, one from each end, with the back faces (wide section) butting against the shoulder on the clutch shaft. (See note below regarding alternative installation method.) Note: Special tools are not available from Twin Disc, Inc., but can be fabricated in any capable machine shop. Note: Use a piece of steel tubing approximately 5 cm. (2 inches) longer than the distance from the end of the shaft to the shoulder and just slightly larger in inside diameter than the bearing cone’s inside diameter. diamet er. The tubing must not

138


Assembly


be thick enough to contact the cage of the bearing during installation. Note: I.D. of Press Tube is slightly larger than the I.D. of the bearing.

Note: Thickness of Press Tube wall must contact ONLY the inner race of the bearing. Note: Bearing must be pressed tight against the shoulder.

Press Ram Flat Plate (tool) Press Tube Bearing Cone (41)


Figure 53. Install bearing cones on the shaft Note: An alternative alternative method method to install install the bearing bearing cones cones is to heat them in an oven at 135° C. (275° F.) F.) for one hour and install them immediately on the clutch shaft. Let the bearing cone cool to room temperature after installation while continuing to apply force as the bearing cools. This is necessary to ensure that it remains properly seated.

3.

After th After the e bea bearin rings gs ret retur urn n to to roo room m temp temper erat ature ure,, coa coatt the the be bear aring ing ro rolle llers rs and both bearing cups with a light film of clean No. 30 engine oil.

4.

Clean the inn Clean inner er rac race e of of fron frontt bea bearin ring g (43) (43) and clu clutch tch sh shaft aft wit with h iso isopro propy pyll solvent to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

5.

Use an ar arbor bor pr press ess to ins instal talll the the rac race e on on the the clu clutch tch sh shaft aft.. Inst Install all the ra race ce from the input end, with wit h the taper toward the front end of the th e shaft and the back face (no taper) butting against agains t the shoulder on the clutch sh aft. (See note below regarding alternative installation method. ) Note: Special tools are not available from Twin Disc, Inc., but can be fabricated in any capable machine shop.


139

Assembly


Note: Use a piece of steel tubing approximately 5 cm. (2 inches) longer than the distance from the end of the shaft to the shoulder and just slightly larger in inside diameter than the bearing race’s inside diameter. di ameter.

Clutch housing 6.

Set the Set the cl clut utch ch ho hous usin ing g (44 (44)) on on the the be bed d of of a pr pres ess s wit with h the the ou outp tput ut en end d of of the housing facing up.

7.

Inst In sta all 2 plu plug gs (5 (57) if th the ey we were re remo mov ved ed..

8.

Use a rou Use round nd ste steel el pla plate te sli sligh ghtl tly y smal smalle lerr in di diam amet eter er tha than n the the oute outerr diameter of the forward main bearing cup (39). Place the bearing cup on the housing, back (wide section) face down. Be sure the plate does not press against the bearing cup’s roller contact surface in the cup. Press the cup to the bottom of the bore. Note: Special tools are not available from Twin Disc, Inc., but can be fabricated in any capable machine shop. Note: Instal Installati lation on Tip A scrap bearing cup the same size as the one being installed (39) may be used as an installation tool in addition to a flat plate. Press Ram Flat Plate (tool) Scrap Bearing Cup used upside down New Bearing Cup (39)

Housing (44)

Press bearing cup to bottom of the bore.

Figure 54. Install the forward bearing cup (39)

140


Assembly


Instal Ins talll the clu clutch tch sha shaft ft and bea bearin ring g int into o the hou housin sing. g. 9.

Carefu Care fully lly in inst stal alll sha shaft ft and and be bear arin ings gs in the the ho hous usin ing. g. Th The e inpu inputt end end of of the the shaft must enter the housing first. Note: DO NOT pre-grease the bearings bearings prior to installation into the housing.

10.

Installl the Instal the rear rear bear bearing ing cup (42 (42)) in the bor bore e on on top top of the upp upper er bear bearing ing cone. Press it tight against the cone.

11.

Installl the Instal the rear rear bear bearing ing ret retain ainer er (64) (64) in the the hous housing ing.. Threa Thread d the the beari bearing ng retainer tight against the bearing cup. Note: The notches must be up.

(Preliminary setting) Measure and set bearing end play.

The only approved method for adjustment of tapered roller bearings in Twin Disc Power Take-Offs is by use of a dial indicator to read actual bearing end play. This preliminary setting setti ng is for assembly assem bly purposes only. Final bearing end play must be adjusted as described below in “(Final setting) Measure and set bearing end play.”

12.

Tighten Tighte n the the bear bearing ing ret retaine ainerr (64) (64) unti untill 6.8 6.8 Nm. Nm. (60 (60 in.in.-lbs. lbs.)) of of torque torque is required to rotate the shaft. Note: Do not overtighten! Damage may occur to the bearings or bearing retainer.

Rotate the shaft several revolutions. This aligns and seats the bearing beari ng cones in the bearing cups and creates a “zero” clearance.


141

Assembly


13.



For side-load applications: Back off the bearing retainer (38) to create a clearance between the bearing retainer and bearing cup. The notch closest to the threaded hole (aligned with or clockwise from the hole) is the first notch. Back off 3 1/2 - 4 1/2 notches

For in-line applications: Back off the bearing retainer (38) to create a clearance between the bearing retainer and bearing cup. Back off 4 1/2 - 5 1/2 notches Note: Bump the output end of the shaft with w ith a soft mallet hard enough to move and seat the front bearing cup up against the bearing retainer and create the specified bearing clearance after each adjustment of the bearing retainer.

142

14.

Turn the Turn the hous housing ing ove overr with with the the input input end up. Ins Instal talll the the outer outer rac race e of fro front nt bearing (43).

15.

Instal Ins talll front front bea bearin ring g reta retaine inerr (38) (38) tig tight ht agai against nst the bea bearin ring g race. race.

16.. 16

Installll four Insta four hex hex head head cap capsc screw rews s (35) (35) to secu secure re the the bear bearing ing reta retaine inerr to the housing. Torque the capscrews to the proper specifications specifica tions given in Torque Values for Fasteners in the Description and Specifications section.


Assembly




18.. 18

Attach Attac h an eye eyebol boltt in the the thre thread ad at at the the outpu outputt end end of the the shaf shaft. t. Att Attac ach ha hoist with a thrust bearing-equipped swivel hook to the eyebolt.

19.. 19


20.. 20

Lift the unit Lift unit off off the the suppo support rts s using using the the hoist hoist.. Apply Apply appr approx oxima imate tely ly 90.7 90.7 Kg. (200 lbs.) of downward force on the bearing carrier while dial indicator is being set. Mark a spot on the end of the shaft next to the stem as a starting reference point and set the dial indicator to “zero.” Dial indicator Use a Hoist and swivel hook.


Bearing Retainer

Note: Typical housing configuration is illustrated. Your housing may be designed differently.

Figure 56. Measuring and setting bearing end play

21.. 21



143

Assembly


22.. 22

Repeatt step Repea steps s 20 and and 21 21 to be be sure sure the the dial dial ind indica icato torr read reading ing re repea peats ts with accuracy. Adjust the bearing bearin g retainer as necessary to obtain 0.152 - 0.254 mm. (0.006 (0.0 06 - 0.010 in.) bearing beari ng end play. (See note below.) Note: For in-line operation: Adjust the bearing retainer as necessary to obtain 0.229 - 0.305 mm. (0.009 (0. 009 - 0.012 in.) bearing end play. pl ay.

23.. 23

Once the Once the beari bearing ng end end play play ad adjus justme tment nt is is compl complete eted, d, matc match-m h-mark ark the bearing retainer and bearing housing so the bearing retainer may be removed and reinstalled in the same exact position. position.

24.. 24

After match After match-ma -marki rking ng the the bear bearing ing reta retaine inerr and and beari bearing ng hous housing ing,, remov remove e the bearing retainer (64) and rear bearing cup (42).

25.. 25

Remove the sh Remove shaft aft an and d hand hand-pa -pack ck the the bear bearing ing con cones es (40 (40 & 41) wit with h grease specified in the lubrication specifications in the Maintenance information tion regarding Filling the main bearing cavity at section . See informa initial assembly in the th e Description and Operation section of this manual. Note: Do not pack the bearing carrier cavity with grease. The proper amount of grease will be added later.

26.

Reinstallll the Reinsta the shaf shaftt with with bearin bearings, gs, fron frontt bearin bearing g cup cup and and bea bearing ring ret retaine ainerr. Position the bearing retainer exactly as as it was prior to removal. Realign the match-marks.

27.

Install the retainer clip cli p (37), hex head capscrew (35) and washer (36). Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section. Note: Bump the output end of the shaft with a soft mallet (as described in the previous step above) hard enough to move and seat the front bearing cup up against the bearing retainer and create the specified bearing clearance after each adjustment of the bearing retainer.


144


Assembly


Clutch Shaft and Housing Assembly - Configurations C & D Refer to the Twin Disc Power Take-Off Reference Listing List ing in the Description and Specifications section, th e exploded views in the Illustrations section and Engineering Drawings near the back of this manual.

Housing Hex Head Washer Retainer Bearing Carrier Capscrew (36) Clip (44) (47) (35) (37)

Bearing Bearing Bearing Bearing Bearing Retainer Cup Cone Cone Cup (38) (39) (40) (41) (42)

Fitting (57)

Plug (52)

Hex Head Capscrew (48) & Washer (49)

Figure 57. Illustration - Configuration C

Hex Head Washer Capscrew (36) (35) Wear Sleeve (67)

Oil Seal O-Ring (68) (78)

Breather (72)

Housing (44)

Bearing Carrier (47) Oil Seal (70)

Retainer Clip (37)

Wear Sleeve (69)

Bearing Bearing Bearing Bearing Bearing Retainer Cup Cone Cone Cup (38) (39) (40) (41) (42) Oil Level Check Plugs (94) (not shown) in sides of bearing housing

Fitting (57)

Pipe Plug (71)


Plug (52)

Figure 58. Illustration - Configuration D


145

Assembly


Clutch Shaft 1.

Clean Clea n the the tape tapere red d bear bearin ing g cone cones s (40 (40 & 41) 41) and and clu clutc tch h shaf shaftt (48) (48) wit with h isopropyl solvent to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

2.

Use an Use an arb arbor or pr pres ess s to to insta installll the the two be bear arin ing g con cones es on th the e clu clutc tch h sha shaft ft.. Install the cones, one from each end, with the back faces (wide section) butting against the shoulder on the clutch shaft. Use a piece of steel tubing approximately 5 cm. (2 inches) longer than the distance from fro m the end of the shaft to the shoulder and just slightly larger in inside diameter than the bearing cone’s inside diameter. diamet er. The tubing must not be thick enough to contact the cage of the bearing during installation. Note: An alternative alternative method method to install install the bearing bearing cones cones is to heat them in an oven at 135° C. (275° F.) F.) for one hour and install them immediately on the clutch shaft. Let the bearing cones cool to room temperature after installation. Continue to apply force as the bearing cools to room temperature ensuring that it remains seated. Press Ram

Note: I.D. of Press Tube is slightly larger than the I.D. of the bearing.

Flat Plate (tool) Press Tube

Note: Thickness of Press Tube wall must contact ONLY the inner race of the bearing.

Bearing Cone (41)


Note: Bearing must be pressed tight against the shoulder.

Figure 59. Install bearing cones on the shaft

146


Assembly


Configuration D only (Configurati (Configuration on C skip to step 5 ) 3.

Coat th Coat the e I.D I.D.. of of the the rea rearr wear wear sle sleev eve e (69 (69)) with with an an anae aero robi bic c sea seala lant nt Twin Disc part number M2828. Press the sleeve onto the shaft. The flat end of the sleeve should be nearest the rear bearing cone. When positioned properly, the contoured side will align exactly with the shoulder of the shaft. Be sure the contour blends in with the shoulder of the clutch shaft. Remove excess sealant when whe n sleeve is in its proper position on the shaft. Contour is flush. Wear sleeve

Shaft wear sleeve shoulder

Shaft shoulder

Figure 60. Locating the oil seal wear sleeve on the shaft

4.

Turn the sha Turn shaft ft ov over er wit with h the the inp input ut en end d up. up. Ins Insta tallll the fro front nt wea wearr slee sleeve ve (67 (67)) as described above for the rear wear sleeve. sl eeve.

Bearing Carrier Configuration D only (Configurati on on C skip to step 8 ) 5.

Set the Set the be bear arin ing g car carri rier er (4 (47) 7) on th the e bed bed of a pre press ss wi with th th the e out outpu putt end end of the housing facing up.

6.

Rest the Rest the re rear ar oi oill seal seal (70 (70)) in th the e hou housi sing ng bor bore; e; the the se seal al lip lip sho shoul uld d be be down, extending toward the front end of the bearing carrier. carrier. Use a flat steel plate slightly larger in diameter than the O.D. of the oil seal. Press the seal straight into the bore until the steel plate stops against the surface surf ace of the housing. The top end of the outer shell of the seal should be flush with the surface of the housing. Pre-lubricate the seal lip with clean No. 30 engine oil. Note: Press only on the outer shell of the seal. Do not damage the seal lip.

7.

Instal Inst alll the the two two oil oil leve levell chec check k plug plugs s (94) (94) and and the the bot botto tom m pipe pipe plu plug g (71) (71) in in the bearing carrier.


147

Assembly



Suppor Supp ortt the the bear bearin ing g carr carrie ierr (47) (47) on on the the benc bench h so th the e inpu inputt end end is up up.. Use a piece of steel tubing or round plate slightly smaller in diameter than the outer diameter of the rear main bearing cup. Place the bearing cup (41) on the carrier, back face down. Be sure the steel tubing or plate plat e does not press against the bearing contact surface in the cup. Press the cup to the bottom of the bore. Press Ram Flat Plate (tool) Scrap Bearing Cup used upside down New Bearing Cup (42)

Bearing Carrier (47) Press bearing cup to bottom of the bore.

Note: Bearing Carrier Configuration C is illustrated.

Figure 61. Install the rear bearing cup (41)

9.

Coat the be Coat bear arin ing g rol rolle lers rs an and d bot both h bea bearin ring g cup cups s with with a lig light ht fil film m of of clea clean n No. 30 engine oil.

(Configuration n C skip to step 11 ) Configuration D only (Configuratio 10.. 10

Pre-lubri Pre-lu bricat cate e the the wear wear slee sleeve ve surf surfac aces es with with clea clean n No. 30 eng engine ine oil in in preparation for installation of the shaft into the bearing retainer retainer..

Instal Ins talll the clu clutch tch sha shaft ft and bear bearing ing con cones es int into o the bea bearin ring g carr carrier ier..

148

11.

Place the Place the bear bearing ing car carrie rierr (47) (47) in in a large large ben bench ch vise vise wit with h prote protecti ctive ve jaws jaws or securely support it on a bench with the input end up. There must mus t be sufficient clearance below the carrier to install the shaft. Carefully install shaft and bearings in the bearing carrier. Be careful to not damage the seal lip as the shaft is installed through it.

12.

Instal Ins talll the the for forwar ward d bear bearing ing cup (39 (39)) into into the bea bearin ring g carr carrier ier..


Assembly


13.. 13

Installll the Insta the bearin bearing g retain retainer er (38) (38) over over the the clutc clutch h shaft, shaft, res restin ting g agains againstt the bearing cup. Note: (Applicable to Configuration D only) Do not install the oring (78) on the bearing retainer at this time.

(Preliminary setting) Measure and set bearing end play

The only approved method for adjustment of tapered roller bearings in Twin Disc Power Take-Offs is by use of a dial indicator to read actual bearing end play. This preliminary setting setti ng is for assembly assem bly purposes only. Final bearing end play must be adjusted as described below in “(Final setting) Measure and set bearing end play.”

14.

Tighten the bea Tighten bearing ring ret retaine ainerr until until 6.8 Nm. (60 in.in.-lbs. lbs.)) of of torqu torque e is requ required ired to rotate the shaft. Note: Do not overtighten! Damage may occur to the bearings or bearing retainer.

Rotate the shaft several revolutions. This aligns and seats the bearing beari ng cones in the bearing cups and creates a “zero” clearance. 15.




149

Assembly


For side-load applications: Back off the bearing retainer (38) to create a clearance between the bearing retainer and bearing cup. The notch closest to the threaded hole (aligned with or clockwise from the hole) is the first notch. SP214, SP314 Series with Bearing Retainer B5183, A3308 or A3308B: Back off 2 3/4 3/4 - 3 3/4 notches

For in-line applications: Back off the bearing retainer (38) to create a clearance between the bearing retainer and bearing cup. SP214, SP314 Series with Bearing Retainer B5183, A3308 or A3308B: Back off 3 3/4 3/4 - 4 3/4 notches w ith a soft mallet hard Note: Bump the output end of the shaft with enough to move and seat the front bearing cup up against the bearing retainer and create the specified bearing clearance after each adjustment of the bearing retainer.

150


Assembly




17.. 17

Attach Attac h an eye eyebol boltt in the the thre thread ad at at the the outpu outputt end end of the the shaf shaft. t. Att Attac ach ha hoist with a thrust bearing-equipped swivel hook to the eyebolt.

18.. 18


19.. 19

Lift the unit Lift unit off off the the suppo support rts s using using the the hoist hoist.. Apply Apply appr approx oxima imate tely ly 90.7 90.7 Kg. (200 lbs.) of downward force on the bearing carrier while dial indicator is being set. Mark a spot on the end of the shaft next to the stem as a starting reference point and set the dial indicator to “zero.”


Note: Typical housing configuration is illustrated. Your housing may be designed differently differently..


Bearing Retainer

Figure 63. Measuring and setting bearing end play Power Take-off Service Manual #1022763

151

Assembly


20.. 20


21.. 21

Repeatt step Repea steps s 19 and and 20 20 to be be sure sure the the dial dial ind indica icato torr read reading ing re repea peats ts with accuracy. Adjust the bearing bearin g retainer as necessary to obtain 0.152 - 0.254 mm. (0.006 (0.0 06 - 0.010 in.) bearing beari ng end play. (See note below.) Note: For in-line operation: Adjust the bearing retainer as necessary to obtain 0.229 - 0.305 mm. (0.009 (0. 009 - 0.012 in.) bearing end play. pl ay.

Configuration C only (Configuration D (oil lubricated) s kip kip to step 26 ) 22.. 22

Once the Once the beari bearing ng end end play play ad adjus justme tment nt is is compl complete eted, d, matc match-m h-mark ark the bearing retainer and bearing housing so the bearing retainer may be removed and reinstalled in the same exact position. position.

23.. 23

After match After match-ma -marki rking ng the the bear bearing ing reta retaine inerr and and beari bearing ng hous housing ing,, remov remove e the bearing retainer (38) and front bearing cup (39).

24.

Remove the shaft an d hand-pack the bearing cones (40 & 41) with grease specified in th e lubrication specifications in the Maintenance informati on regarding Filling the Main Bearing Cavity section . See information at initial assembly in the t he Description and Operation section of this manual. Note: Do not pack the bearing carrier cavity with grease. The proper amount of grease will be added later.

25.

Reinstallll the Reinsta the shaf shaftt with with bearin bearings, gs, fron frontt bearin bearing g cup cup and and bea bearing ring ret retaine ainerr. Position the bearing retainer exactly as as it was prior to removal. Realign the match-marks. Note: Bump the output end of the shaft with a soft mallet (as described in the previous step above) hard enough to move and seat the front bearing cup up against the bearing retainer and create the specified bearing clearance after each adjustment of the bearing retainer.

152


Assembly


Configurations C and D 26.

Install the retainer clip cli p (37), hex head capscrew (35) and washer (36). Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section.

27.

Instal Ins talll plug plugs s (52) (52) in the the out output put end of the bea bearin ring g carr carrier ier..

Install Ins tall the bea bearing ring carr carrier ier uni unitt on the clu clutch tch hou housing sing.. 28.. 28

Inst In stal alll 2 lubri lubrica cati tion on fit fitti ting ngs s (57) (57) ifif they they wer were e remo remove ved. d.

29.. 29

Set the the clut clutch ch hou housin sing g (44) (44) on on a work work ben bench, ch, sec secur urely ely sup suppo porte rted d with with wooden blocks, with the input end of the housing facing down. There should be sufficient clearance below the housing to allow for installation installat ion of the clutch shaft.

30.

Lift the bea bearing ring carr carrier ier and sha shaft ft using using a hoist hoist sec securel urely y attac attached hed to it. Carefully lower the bearing carrier and shaft onto the clutch housing. Disconnect the hoist. Position Posit ion the carrier so the grease fitting (51) (or breather if Configuration D) will be up when when the clutch housing is in its final position on the engine.

31.. 31

Attach Attac h the the suppo support rt plat plate e if used used,, and and secu secure re the the bear bearing ing car carrie rierr to the the clutch housing with six hex-head capscrews (48) and washers (49). Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section. Note: Bump the output end of the shaft with a soft mallet (as described in the previous step above) hard enough to move and seat the front bearing cup up against the bearing retainer and create the specified bearing clearance after each adjustment of the bearing retainer.



153

Assembly


Clutch Shaft and Housing Assembly - Configuration E Refer to the Twin Disc Power Take-Off Reference Listing Lis ting in the Description and Specifications section, the section, the exploded views in the Illustrations section and Engineering Drawings near the back of this manual.

Housing (44)


Fitting (57)


Bearing (40)


Fitting (51)

Washer (49)



Figure 64. Illustration - Configuration E

Clutch shaft 1.

Clean the mai Clean main n be beari aring ng (40 (40)) an and d clu clutc tch h sh shaft aft (33 (33)) wit with h is isop oprop ropyl yl so solve lvent nt to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

154

2.

Suppor Supp ortt the the sh shaf aftt with with th the e inp input ut en end d up. up. In Inst stal alll the the low lower er sn snap ap rin ring g (59 (59)) in the lower groove.

3.

Use an ar arbor bor pre press ss to in insta stallll th the e bea bearin ring g (40 (40)) on on the the clu clutch tch sha shaft ft (33 (33). ).


Assembly


Install the bearing on the clutch shaft, pressing it tight t ight against the snap ring. Use a piece of steel tubing approximately 5 cm. (2 in.) longer than the distance from the end of the shaft sha ft to the snap ring and just slightly slight ly larger in inside diameter than the bearing ’s inside diameter. diameter. (see note below regarding special tools.)

Do not press the bearing too tight against the snap ring. The snap ring may be damaged and forced out of the groove. The groove may also be damaged, rendering the shaft unusable. Note: Special tools are not available from Twin Disc, Inc., but can be fabricated in any capable machine shop. Note: An alternative alternative method to install the bearings bearings is to heat them in an oven at 135° C. (275° F.) for one hour and install them immediately on the clutch shaft. Let the bearing cone cool to room temperature after installation while continuing to apply force as the bearing cools. This is necessary to ensure that it remains properly seated. Note: I.D. of Press Tube is slightly larger than the I.D. of the bearing.


Press Ram Flat Plate (tool) Press Tube Bearing (40)

Clutch Shaft (33)

Note: Bearing must be pressed tight against the snap ring. External Snap Ring (59)

Figure 65. Install bearing cones on the shaft Power Take-off Service Manual #1022763

155

Assembly


4.

Inst In stal alll the the up uppe perr sna snap p rin ring g (58 (58)) in in the the up uppe perr gro groov ove. e.

Instal Ins talll the clu clutch tch sha shaft ft and bea bearin rings gs int into o the bea bearin ring g carr carrier ier.. 5.

Place Plac e the the bear bearin ing g car carri rier er (47 (47)) in a larg large e benc bench h vise vise wit with h prot protec ecti tive ve jaw jaws s or securely support it on a bench with the input end up. There must mus t be sufficient clearance below the carrier to install the shaft. Note: Pre-grease the bearing prior to assembly.

6.

Carefully Carefu lly ins insta tallll sha shaft ft and bea bearin ring g in in the the bea bearin ring g carr carrier ier.. The out output put end of the shaft must enter the carrier first.

7.

Inst In stal alll th the e in inte tern rnal al sn snap ap ri ring ng (7 (75) 5) in th the e bea beari ring ng ca carr rrie ierr.

Install Ins tall the bea bearing ring carr carrier ier uni unitt on the clu clutch tch hou housing sing..

156

8.

Set the Set the clut clutch ch hou housi sing ng (44 (44)) on a wo work rk ben bench ch,, secu secure rely ly sup suppo port rted ed wit with h wooden blocks, with the input end of the housing facing down. There should be sufficient clearance below the housing to allow for installation installat ion of the clutch shaft.

9.

Inst In stal alll two two gr grea ease se fi fitt ttin ings gs (5 (57) 7) if th they ey we were re re remo move ved. d.

10.

Lift the bea bearing ring carr carrier ier and sha shaft ft using using a hoist hoist sec securel urely y attac attached hed to it. Carefully lower the bearing carrier and shaft onto the clutch housing. Disconnect the hoist. Position the carrier carri er so the grease fitting (51) will be up when when the clutch housing is in its final position on the engine.

11.

Attach Attac h the the suppo support rt plat plate e if used used,, and and secu secure re the the bear bearing ing car carrie rierr to the the clutch housing with six hex-head capscrews (48) and washers (49). Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section.


Assembly


Clutch Shaft and Housing Assembly - Configurations F & G Refer to the th e Twin Disc Di sc Power Po wer Take-Off Take-Off Reference Refe rence Listing in the Description and Specifications section, section , the exploded views in the Illustrations section and Engineering Drawings near the back of this manual.

Bearing Bearing Retainer (40) (38)


Fitting (57)

Fitting (51)


Bearing (41)

Housing (44)

Washer (49)


Figure 66. Illustration - Configuration F Housing (44)

Bearing (41)

Oil Seal Bearing Bearing (68) Retainer (40) (38)



Fitting (51)

Oil Seal (70)

O-Ring (78) Fitting (57)

Washer (49)


Figure 67. Illustration - Configuration G Power Take-off Service Manual #1022763

157

Assembly


Clutch Shaft 1.

Clean Clea n the the fron frontt and and rear rear tap taper ered ed bea beari ring ngs s (40 (40 & 41) 41) and and clut clutch ch sha shaft ft (33) with isopropyl solvent to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

2.

Use an ar Use arbo borr pres press s to in inst stal alll the the two two bear bearin ings gs on on the the clut clutch ch sha shaft ft.. Inst Instal alll the bearings, one from each end, butting against the shoulder on the clutch shaft. Use a piece of steel tubing approximately 5 cm. (2 inches) longer than the distance from the end of the shaft shaf t to the shoulder and just slightly larger in inside diameter than the bearing cone’s inside diameter. The tubing must not be thick enough to contact the cage of the bearing during installation. Note: An alternative alternative method to install the bearings bearings is to heat them in an oven at 135° C. (275° F.) for one hour and install them immediately on the clutch shaft. Let the bearings cool to room temperature after installation. Continue to apply force as the bearing cools to room temperature ensuring that it remains seated. Press Ram

Note: I.D. of Press Tube is slightly larger than the I.D. of the bearing.

Flat Plate (tool) Press Tube


Bearing (41)



Figure 68. Install rear main bearing (41) on the shaft

158


Assembly


Bearing Carrier

(Configuration on F skip to step 6 ) Configuration G only: (Configurati 3.

Set the Set the be bear arin ing g car carri rier er (4 (47) 7) on th the e bed bed of a pre press ss wi with th th the e out outpu putt end end of the housing facing up.

4.

Rest the Rest the re rear ar oi oill seal seal (70 (70)) in th the e hou housi sing ng bor bore; e; the the se seal al lip lip sho shoul uld d be be down, extending toward the front end of the bearing carrier. carrier. Use a flat steel plate slightly larger in diameter than the O.D. of the oil seal. Press the seal straight into the bore until the steel plate stops against the surface surf ace of the housing. The top end of the outer shell of the seal should be flush with the surface of the housing. Pre-lubricate the seal lip with clean No. 30 engine oil. Note: Press only on the outer shell of the seal. Do not damage the seal lip.

5.

Coat Co at th the e bea beari ring ngs s wit with h a liligh ghtt fil film m of of cle clean an No No.. 30 30 eng engin ine e oil oil..

Configuration F only: (Configuration G (oil lubricated) skip to step 7 ) 6.

Hand pack the bearings with grease as described in the Description and Specifications section.

Instal Ins talll the clu clutch tch sha shaft ft and bea bearin rings gs int into o the bea bearin ring g carr carrier ier.. Configurations F & G: 7.

Place Plac e the the bear bearin ing g car carri rier er (47 (47)) in a larg large e benc bench h vise vise wit with h prot protec ecti tive ve jaw jaws s or securely support it on a bench with the input end up. There must mus t be sufficient clearance below the carrier to install the shaft. Carefully install shaft and bearings in the bearing carrier. Be careful to not damage the seal lip as the shaft is installed through it.

8.

Installll the sh Insta shaf aftt with with the be beari aring ngs s in in the the bea bearin ring g carr carrier ier.. The The low lower er bea bearin ring g must seat securely in the bottom of the bore.


159

Assembly


Configuration G only: (Configuration F skip to step 10 ) 9.

Installll th Insta the e o-ri o-ring ng (7 (78) 8) in th the e gro groove ove on the O.D O.D.. of of the the be bear aring ing ret retain ainer er (38). Coat the o-ring with a light film of clean No. 30 engine oil.

Configurations F & G: 10.

Install bea Install bearing ring reta retainer iner (38 (38)) in the bear bearing ing carr carrier ier (47 (47)) restin resting g secu securely rely against the front bearing (40).

11.

Installll the Insta the intern internal al snap snap rin ring g (75) (75) in the gro groove ove of the the beari bearing ng carr carrier ier.. Be sure it is securely seated in the groove.

Install Ins tall the bea bearing ring carr carrier ier uni unitt on the clu clutch tch hou housing sing.. 12.. 12

Set the the clut clutch ch hou housin sing g (44) (44) on on a work work ben bench, ch, sec secur urely ely sup suppo porte rted d with with wooden blocks, with the input end of the housing facing down. There should be sufficient clearance below the housing to allow for installation installat ion of the clutch shaft.

13.

Lift the bea bearing ring carr carrier ier and sha shaft ft using using a hoist hoist sec securel urely y attac attached hed to it. Carefully lower the bearing carrier and shaft onto the clutch housing. Disconnect the hoist. Position the carrier so the fitting (51) will be up when the clutch housing is in its final position on the engine.

14.. 14

Attach Attac h the the suppo support rt plat plate e if used used,, and and secu secure re the the bear bearing ing car carrie rierr to the the clutch housing with six hex-head capscrews (48) and washers (49). Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section.

15.. 15



160


Assembly


Clutch Shaft and Housing Assembly - Configurations H & I Refer to the Twin Disc Power Take-Off Reference Listing the Description List ing in the and Specifications section, section , the exploded views in the Illustrations section and Engineering Drawings near the back of this manual.

Housing (44)

Fitting (51)

External Snap Ring (75)

Bearing (40)



Fitting (57)

Dowel (61)

Plug (63)


Sheave Housing (60)

Bearing External Fitting Snap Ring (50) (41) (73)

Bearing Hex Head Retainer Capscrew (64) (65)

Figure 69. Illustration - Configuration H

Housing (44)

Fitting (51)

Bearing Wear Sleeve (40) (67)


Washer Hex Head (36) Capscrew (35)

Bearing (41)

Shim (95)

Fitting (50)

Plug (63)

Fitting (57)

Dowel (61)


Sheave Housing (60)

Bearing Washer Hex Head Capscrew Retainer (66) (65) (64)

Figure 70. Illustration - Configuration I Power Take-off Service Manual #1022763

161

Assembly


Clutch Shaft 1.

Clean th Clean the e fro front nt an and d rea rearr bea bearin ring g inn inner er ra race ces s (40 (40 & 41) 41) an and d clu clutc tch h sha shaft ft (33) with isopropyl solvent to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

skip to step 3 ) Configuration I only (Configuration H skip 2.

Coat the Coat the I.D I.D.. of th the e wear wear sle sleev eve e (67) (67) wit with h an an anae aero robi bic c seal sealan antt Twi Twin n Disc part number M2828. Use a piece of steel tubing approximately 5 cm. (2 inches) longer than the distance from f rom the end of the shaft to the shoulder and just slightly larger in inside diameter than the wear sleeve’s inside diameter. Press the sleeve onto the shaft, tight against the shoulder. The sleeve is to be installed from the forward end of the shaft. Note: Special tools are not available from Twin Disc, Inc., but can be fabricated in any capable machine shop. Note: An alternat alternative ive method to install the sleeve is to heat it in an oven at 135° C. (275° F.) for one hour and install it immediately on the clutch shaft. Let the sleeve cool to room temperature after installation. Continue to apply force as the sleeve cools to room temperature ensuring that it remains seated. Note: I.D. of Press Tube is slightly larger than the I.D. of the sleeve.

Press Ram Flat Plate (tool) Press Tube Wear Sleeve (67)

Clutch Shaft (33)

Note: Sleeve must be pressed tight against the shoulder.

Figure 71. Install wear sleeve on the shaft 162


Assembly



Use an ar Use arbo borr pres press s to in inst stal alll the the fron frontt bear bearin ing g inne innerr race race (40 (40)) on th the e clutch shaft. Install the race, butting tight against the shoulder on the clutch shaft or (Configuration I only) against the wear sleeve. Use a piece of steel tubing approximately 5 cm. (2 inches) longer than the distance from the end of the shaft to the shoulder and just slightly larger in inside diameter than the race’s inside diameter. diamet er. Note: Special tools are not available from Twin Disc, Inc., but can be fabricated in any capable machine shop.

alterna rnative tive met method hod to ins install tall the bea bearin ring g rac race e is to hea heatt Note: An alte them in an oven at 135° C. (275° F.) for one hour and install them immediately on the clutch shaft. Let the race cool to room temperature after installation. Continue to apply force as they cool ensuring that they remain seated. (Proceed at step 4.) Note: I.D. of Press Tube is slightly larger than the I.D. of the sleeve.

Press Ram Flat Plate (tool) Press Tube

Front Bearing Inner Race (40) Clutch Shaft (33)

Note: Conf. I: Race must be pressed tight against the wear Sleeve.)

Wear Sleeve (67)

Note: Conf. H: Race must be pressed tight against the shoulder shoulder.. (Wear Sleeve is not used.)

Figure 72. Install the front bearing inner race on the shaft


163

Assembly


Configuration H only: 4.

(Configuration I skip to step 5 )

Installll the ex Insta exter ternal nal sn snap ap rin ring g (75 (75)) in in the the sh shaft aft gro groov ove e next next to the fro front nt bearing (40). Be sure the snap ring is correctly seated in the groove.


Use an ar arbo borr pre press ss to in insta stallll the inn inner er ra race ce of re rear ar be bear aring ing (41 (41)) on on the the clutch shaft. Install the race, butting tight against the shoulder on the clutch shaft. Use a piece of steel tubing approximately 5 cm. (2 inches) longer than the distance from the end of the shaft shaf t to the shoulder and just slightl slightly y larger in inside diamete diameterr than the race’s inside diamete diameterr. Note: Special tools are not available from Twin Disc, Inc., but can be fabricated in any capable machine shop.

alterna rnative tive met method hod to ins install tall the bea bearin ring g rac race e is to hea heatt Note: An alte them in an oven at 135° C. (275° F.) for one hour and install them immediately on the clutch shaft. Let the race cool to room temperature after installation. Continue to apply force as they cool ensuring that they remain seated. Note: I.D. of Press Tube is slightly larger than the I.D. of the bearing.

Press Ram Flat Plate (tool) Press Tube


Bearing Inner Race (41)


Figure 73. Install the rear bearing inner race on the shaft

164


Assembly


(Configuration tion I skip to step 7 ) Configuration H only: (Configura 6.

Installll the ex Insta exter ternal nal sna snap p rin ring g (73 (73)) in in the the sha shaft ft gro groov ove e next next to th the e rea rearr bearing (41). Be sure the snap ring is correctly seated in the groove.

Instal Ins talll the clu clutch tch sha shaft ft and bea bearin rings gs int into o the mai main n hou housin sing. g. Configurations H & I: 7.

Support Suppo rt th the e hou housin sing g (44 (44)) wit with h the out outpu putt end end up up.. The There re mus mustt be be suf suffic ficien ientt clearance below the housing to install the shaft.

8.

Hand pack the bearings with grease as described in the Description and Specifications section.

9.

Apply Appl y grea grease se to to the the circ circum umfe fere rent ntia iall cavi caviti ties es in in the the hous housin ing g (44) (44) and and bearing retainer (38) as a seal against water and contaminants, and to the inside surfaces of the housing and bearing retainer that contact the bearing.

Bearing Retainer (38) Grease Locations Housing (44)

Figure 74. Apply grease before assembly

10.. 10

Carefully Carefu lly inst install all the the oute outerr race race of of the fro front nt bear bearing ing (40 (40)) in the the hous housing ing bore.


165

Assembly


11.

Care Ca refu fulllly y in inst stal alll sha shaft ft in th the e ho hous usin ing. g.

Use extra care to prevent damage to the t he bearing rollers or races during shaft installation. Damage will cause premature failure.

12.

Install the bea Install bearin ring g retai retainer ner (38 (38)) on the hou housin sing g and and secu secure re with with six hex head capscrews (35) and (Configuration I only) six washers (36). ( 36). Torque Torque the capscrews to 80 Nm (59 lb.-ft.).

13.. 13


14.. 14

Determine Determ ine th the e posi positio tion n the the sheav sheave e housi housing ng will will be in in when when the the pto pto is is installed on the engine. The sheave housing must be piloted on both dowel pins. Install the dowel pins (61) in the appropriate holes in the main housing.

15.

Apply grea Apply grease se to to the the circu circumfe mferen rentia tiall cavit cavities ies in the the shea sheave ve hous housing ing (60 (60)) and bearing retainer (64) as a seal against water and contaminants, and to the inside surfaces of the housing and bearing retainer that contact the bearing.

Bearing Retainer (64) Grease Locations Sheave Housing (60)

Figure 75. Apply grease before assembly

16.

166

Install the she Install sheave ave hou housing sing (60) (60),, locati locating ng it on on the the dowe dowell pins. pins. Secu Secure re itit with the (six or eight) hex head capscrews (48) and (Configuration I only) eight washers (49).


Assembly


17.

Install the oute Install outerr race race of of the the rear rear beari bearing ng (41) (41) in the the shea sheave ve hous housing. ing. Tap the race to the bottom of the bore.

18.

Hand pack the bearing with grease as described in the Description and Specifications section.

19.. 19

Instal Ins talll the the fitti fitting ngs s (63) (63) in in the the sheav sheave e hous housing ing if they they wer were e remov removed. ed.

20.

Installl the Instal the beari bearing ng reta retaine inerr (64) (64) on on the the sheav sheave e housi housing ng and and secu secure re with with three hex head capscrews (65) and (Configuration I only) three washers (66). Torque the capscrews to the proper specifications specif ications given in Torque Values for Fasteners in the Description and Specifications section.

Measur Mea sure e the bea bearin ring g end pla play y (sh (shaft aft mo movem vement ent)) 21.

Insure tha t the proper amount of bearing end play exists. exist s. Pr oceed as instructed in i n Checking Bearing End Play - Model SB314SB as shown in the Maintenance section of this manual

Configuration I only: 22.

If the the end pla play y is not as spec specifi ified, ed, rem remove ove the hex hea head d capsc capscrew rews s and and washers, and remove the bearing retainer (64).

23.. 23

Inst In stal alll or rem remov ove e shims shims (9 (95) 5) to to obta obtain in the the pro prope perr end end play play.. a.

Rec Re cord th the en end pl play re readin ing g fro from m st step 21 21.

b.

Subt Su btra ract ct 0. 0.05 055 5 mm (0 (0.0 .002 02 in inch ches es)) fr from om th the e re read adin ing. g.

c.

The dif The diffe fere renc nce e bet betwe ween en th the e two two fi figu gure res s is is the the th thic ickn knes ess s of of shi shims ms that must be added or removed. End Play Reading - 0.055 mm (0.002 inches) =Shim thickness

24.. 24

Repeatt step Repea steps s 21 thr throu ough gh 23 23 until until the en end d play play mea measur sureme ement nt is is as specified.



167

Assembly


Clutch Shaft and Housing Assembly - Configuration J Refer to the Twin Disc Power Take-Off Reference Listing Description Lis ting in the Description and Specifications section, the section, the exploded views in the Illustrations section and Engineering Drawings near the back of this manual.

Hex Head Washer Retainer Bearing (36) Retainer Capscrew Clip (38) (35) (37)

Housing (44)

Fitting (51)

External Bearing (40) Snap RIng (58)

Figure 76. Illustration - Configuration J

Clutch shaft 1.

Clean the mai Clean main n be beari aring ng (40 (40)) an and d clu clutc tch h sh shaft aft (33 (33)) wit with h is isop oprop ropyl yl so solve lvent nt to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

2.

Suppor Supp ortt the the shaf shaftt with with the the inp input ut end end up. up. Use Use an an arbo arborr pres press s to in inst stal alll the the bearing (40) on the clutch shaft (33). bearing must be up, toward Note: The external snapring of the bearing the input end of the shaft.

168


Assembly


Install the bearing on the clutch shaft, pressing it from the input end, tight against the shoulder. Use a piece of steel tubing approximately 5 cm. (2 in.) longer than the distance from the end of the shaft to the shoulder and just slig slightly htly larg larger er in insi inside de diam diameter eter than the bear bearing ing ’s insi inside de dia diamete meterr. (see note below regarding special tools.) Note: Special tools are not available from Twin Disc, Inc., but can be fabricated in any capable machine shop.

alternative method to install the bearings bearings is to heat Note: An alternative them in an oven at 135° C. (275° F.) for one hour and install them immediately on the clutch shaft. Let the bearing cone cool to room temperature after installation while continuing to apply force as the bearing cools. This is necessary to ensure that it remains properly seated. Note: I.D. of Press Tube is slightly larger than the I.D. of the bearing. Note: Thickness of Press Tube wall must contact ONLY the inner race of the bearing. External Snapring of Bearing must be up (toward input end of shaft).

Press Ram Flat Plate (tool) Press Tube Bearing (40)

Input end of Clutch Shaft (33)

Note: Bearing must be pressed tight against the shoulder shoulder..

Figure 77. Install bearing on the shaft


169

Assembly


3.

Installll the ex Insta exter ternal nal sna snap p rin ring g (73 (73)) in in the the sha shaft ft gro groov ove e next next to th the e rea rearr bearing (41). Be sure the snap ring is correctly seated in the groove.

Instal Ins talll the clu clutch tch sha shaft ft and bea bearin rings gs int into o the mai main n hou housin sing. g. 4.

Inst In stal alll 2 lub lubri rica cati tion on fi fitt ttin ings gs (5 (57) 7) if th they ey we were re rem remov oved ed..

5.

Suppor Supp ortt th the e hou housin sing g (44 (44)) wit with h the the in inpu putt end end up up.. The There re mu must st be su suff ffic icie ient nt clearance below the housing to install the shaft.

6.

Carefu Care fulllly y inst instal alll shaf shaftt and and bea beari ring ng in in the the hous housin ing. g. The The ou outp tput ut end end of of the the shaft must enter the housing first. Note: Insure that the snapring of the bearing is tight against the housing.

7.

Instal Inst alll the the bear bearin ing g reta retain iner er (38 (38)) in th the e hous housin ing. g. Thr Threa ead d the the bear bearin ing g reta retain iner er tight against the bearing. Note: The notches must be up.

8.

Tighten Tigh ten the be beari aring ng ret retain ainer er un until til 6. 6.8 8 Nm. Nm. (60 (60 in.in.-lbs lbs.) .) of of torq torque ue is req requir uired ed to rotate the shaft. Note: Do not overtighten! Damage may occur to the bearings or bearing retainer.

9.

Note the Note the po posit sition ion of an any y one one of the no notch tches es in the be beari aring ng re retai tainer ner re relat lative ive to the threaded hole for the retainer lock capscrew. Back the bearing retainer off until the nearest notch aligns with the threaded hole.

10.

Install the retainer clip cli p (37), hex head capscrew (35) and washer (36). Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section.


170


Assembly


Install the Operating Shaft and Throwout Yoke . Refer to the BOM, BOM , Twin Disc Power Take-Off Reference Listing in the Description and Specifications sectio n, the exploded views in the Illustrations section and Engineering Drawings near the back of this manual.

SPE114, SPE214, and SPE314 SPE114, SPE31 4 Series only: (SPE114, SP214, SP314, SP314SB, RFD214 and RFD314 Series, skip Series, skip to ste step p 2 .) 1.

Installll the two Cam Insta Camrol rols s (92 (92)) int into o the the th throw rowou outt yok yoke e (54 (54). ). Pos Positi ition on th the e Camrols toward the inside of the yoke and the nuts (93) on the outside. Install a hex nut on each Camrol and torque the nuts to 17-21 Nm (13-16 lb.-ft.).

SP114, SPE114, SP214, SPE214, SP314, SPE314, SP314SB, RFD214 SP114, and RFD RFD314 314 Ser Series ies:: 2.

Positi Posi tion on th the e clu clutc tch h hou housi sing ng on a be benc nch h with with th the e inp input ut en end d faci facing ng up up.. Install the operating shaft (55) halfway into the clutch housing. Slip the throwout fork (54) onto the operating shaft and push the shaft through to the hole on the other side of the clutch housing far enough to expose one of the woodruff key slots at the center of the throwout fork.

3.

Inst In stal alll one one wo wood odru ruff ff ke key y (56 (56)) in in the the op oper erat atin ing g sha shaft ft..

Clutch Shaft (33) Note position of throwout fork (54)


Operating Shaft (55)

Figure 78. Install the throwout fork

4.

Push th Push the e ope opera rati ting ng sha shaft ft the the ot othe herr way way to to expo expose se the the oth other er key key slo slott in the center of the fork.

5.

Insta talll th the e other woodru rufff key (56) 6)..


171

Assembly


6.

Center Cent er th the e ope opera rati ting ng fo fork rk so the the hex hex hea head d caps capscre crews ws wi willll en ente terr the the bottom of the throwout fork and thread into the top section. Install the two hex-head capscrews and tighten. Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section.

7.

Install the stop collar (76) (if used) per instructions given in Hand Lever Position for Twin Disc Power Take-Offs in the Installation section of this manual. S eries, use a stop Note: Some units, such as in the SP314SB Series, collar even though the pto is not normally installed with the operating shaft in the vertical position.

(Proceed to PTO Final Assembly)

172


Assembly


PTO Final Assembly Instal Ins talll the clu clutch tch in the clu clutch tch hou housin sing. g. Refer to the Twin Disc Power Take-Off Reference Listing in the the Description List ing in and Specifications section, the section, the exploded views in the Illustrations section and Engineering Drawings near the back of this manual. 1.

Set up and Set and sup suppo port rt the the mai main n hous housin ing g asse assemb mbly ly (44 (44)) with with att attac ache hed d part parts s on the bench with the input side facing up. Note: The output end of the shaft must rest securely on a solid surface.

2.

3.

Care Ca refu fulllly y pla place ce th the e clu clutc tch h ass assem embl bly y ove overr the the cl clut utch ch sh shaf aftt whil while: e: A.

Aligning Align ing the trun trunnion nions s on the coll collar ar with the thro throwout wout fork fork..

B.

Aligni Alig ning ng th the e key keywa ways ys in the the hu hubb-an andd-ba back ck pl plat ate e with with th the e key keywa way y in the clutch shaft.

Partially Partia lly in inst stall all the hu hub b key key (29 (29)) in the ke keywa yway y. Tap Tap the hu hub-a b-and nd-b -back ack plate with a large, but soft mallet, to seat it on the tapered surface of the clutch shaft.

Be sure the output end of the shaft is resting on a solid surface to absorb the force through the shaft rather than through the bearing surfaces. Clutch Rotate throwout fork to engage trunnion. Use several 4” x 4” blocks or other means of insuring the pto does not not tip or fall over.

Clutch Key (29)

Clutch Shaft (33)

Output end of the shaft MUST rest and be in contact with a solid support (Press bed).

Figure 79. Assemble clutch into Power Take-Off Take-Off Power Take-off Service Manual #1022763

173

Assembly


4.

Drive th Drive the e hub hub ke key y (29) (29) int into o pos positi ition on sli sligh ghtl tly y belo below w the the sur surfa face ce of the hu hubband-back plate (4). Note: Do not use excessive hammer force when installing the key.

5.

Instal Inst alll the the hub hub nut nut lock lock was washe herr (3) (3) over over the the clu clutc tch h shaf shaftt (33) (33),, loca locati ting ng its its tab in the drilled hole on the hub-and-back plate plat e (4). Install the hub nut (2) and tighten and torque to 40.7 Nm. (30 ft. -lb).

6.

Tig ight hten en the the hub hub nut nut an an addi additi tion onal al 150 150 - 180 180 deg degre rees es clo clock ckwi wise se,, then then bend a side of the hub nut lock washer up against a flat on the hub nut.

7.

Route Rout e the the fl flex exib ible le ho hose se as asse semb mbly ly (1 (19) 9) cl clea earr of of all all mov movin ing g par parts ts an and d pus push h the end hose fitting (20) through the hole in the clutch housing.

8.

Instal Inst alll the the lock lock was washe herr (21) (21) and and jam jam nut nut (22 (22)) to ret retai ain n the the end end fitt fittin ing g (23) (23) in the housing. Torque the capscrews to the proper specifications specifica tions given in torque values for Fasteners in the Description and Specifications section.

Confirm that the hose assembly is not twisted or applying preload to the collar assembly.

Configurations with stop collar (28) only: (All others skip to step 10 ) 9.

Center Cent er the the ope opera rati ting ng sha shaft ft so so the the thro throwo wout ut yok yoke e (54) (54) is is not not prel preloa oade ded d against either side of the collar (28). Put one stop collar (76) on each end of the operating shaft, snug against the clutch housing (44). Tighten the screw (77) to secure each stop collar coll ar on the shaft.

Alll Co Al Conf nfig igur urat atio ions ns:: 10.. 10

174

Installl all rema Instal remaini ining ng plug plugs s and and exter externa nall compo componen nents ts on on the the power power tak takeeoff.


Assembly


Center the clutch plates 11.

If not not prev previous iously ly done done,, visual visually ly cen center ter the fric friction tion plat plates es (6) on the clut clutch ch and align the teeth. Press down on the collar assembly to lock the plates in place. If necessary, necessary, pull the adjustment lock pin to compress the lock pin spring, and rotate the adjusting yoke assembly assembl y until the plates are locked in position when the collar is pressed down. Note: This is an initial setting to hold the plates in place until after the pto is mounted on the engine, so it is imperative that the teeth be exactly aligned aligned and the plates are exactly centered on the clutch. The driving ring may be used as an alignment fixture to align the teeth and center the plates relative to the hub-and-backplate so they are perfectly aligned when the pto is installed on the engine. Perfectly center the clutch in the drive ring. (This gap is to be exactly equal all the way around.) Visually align Driving Ring relative to housing bore.

Figure 80. Using the driving ring as an alignment tool


175

Assembly


Final assembly and lubrication.

176

12.

Install the power take-off according to instructions in the Installation section of this manual .

13.

Adjust the clutch accor according ding to Clutch Adjustment in the Maintenance Maintenanc e section of this manual.

14.

Fill the main bearing cavity with grease or oil according to lubrication specifications in the Maintenance section and Filling the Main Bearing Cavity during initial assembly in the Description and Specifications section of this manual.

15.

Lubricate the remainder of the pto according to lubrication specifications in the Description and Specifications section of this manual.

16.. 16

Place the Place the inst instruc ructio tion n cove coverr plate plate (45) (45) in in posit position ion on on the the hous housing ing and secure with 2 hex-head cap screws 5/16” - 18 x 1/2” (46). Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section.

17.. 17

Place the Place the bot bottom tom cov cover er plat plate e (62) (62),, if use used, d, in in posi positio tion n on the the hous housing ing and secure with 2 hex-head cap screws sc rews 5/16” - 18 x 1/2” (74). Torque the capscrews to the proper specifications given in Torque Values Values for f or Fasteners in the Description and Specifications section.

18.

Installl the sha Instal shaft ft key key (34) (34) and and all par parts ts prev previou iously sly rem remove oved d from from the the outpu outputt end of the clutch shaft.


Illustrations


Illustrations

List of Illustrations The following pages include illustrations that are specific to this model. The illustrations included are listed below. Note: Any part numbers listed in the following illustrat illustrations ions are for reference only. Please refer to your bill of material for part numbers specific to your model.



Parts Identification List - SP114, SPE114, SP214, SPE214, SP314, SPE314, SP314SB, RFD214 and RFD314 Series



Exploded View SP114, SP214 and RFD214 Series Clutches



Exploded View SP314 and RFD314 Series Clutches



Exploded View (Configuration A)



Exploded View (Configuration B)



Exploded View (Configuration C)



Exploded View (Configuration D)



Exploded View (Configuration E)



Exploded View (Configuration F)



Exploded View (Configuration G)



Exploded View (Configuration H)



Exploded View (Configuration I)



Exploded View (Configuration J)



Exploded View (SPE114, SPE214 and SPE314 Series Throwout Mechanism)


177

Illustrations


Parts Identification List - SP114, SPE114, SP214, SPE214, SP314, SPE314, SP314SB, RFD214 and RFD314 Series Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 178

Description

Qty.

Pilot Bearing 1 Nut 1 Washer 1 Hub-and-back plate 1 Ring, drive 1 Plate, friction 1,2 or 3 Plate, center 1 or 2 Plate, pressure 1 Lever 4 Washer (lever to pressure plate) 4 Pin Pi n, cle clevi vis s (le (leve verr to to pre press ssur ure e pla plate te)) 4 Pin Pi n, co cott tte er (le (leve verr to to pre press ssu ure pl pla ate te)) 4 Cotter pin (lever to link) 4 Pin, clevis (lever to link) 4 Link 4 Pin, clevis (link to sleeve) 4 Clevis pin (link to sleeve) 4 Fitting 1 Hose 1 Fitting 1 Washer 1 Nut 1 Fitting, grease 1 Spring, compression 1 Pin 1 Yoke, adjusting 1 Sleeve, sliding 1 Collar assembly (collar) 1 Ring, snap-external 1 Bearing, ball 1 R ing, snap-internal Ri 1 Key-clutch 1 Shaft, clutch 1 Key-output 1 Capscrew, hex-head 1, 6 or 8 Washer 1, 6 or 8 Retainer, clip 1 Retainer, bearing Re 1 Bearing, cup-front Be 2 Bearin Bea ring, g, cone-f cone-fron rontt (or bearing bearing-qt -qty y. 1) 2 Bearin Bea ring, g, cone cone-rea -rearr (or (or beari bearingng-qty qty.. 1) 2 Bearing, cup-rear Be 2 Bearing 1 Housing 1 Plate, instruction Pl 1 Screw, machine 2 Carrier, bearing 1 Screw, hex-head 6

Item 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96

Description

Qty.

Washer 6 Fitting 1 Fitting 1 Plug 2 or 3 Hand lever assembly 1 Throwout yoke 1 Shaft, operating 1 Key, woodruff 2 Fitting (or plug) 2 S nap Ring, external Sn 1 S nap Ring, external Sn 1 Sheave Housing 1 Dowel Pin 2 Plate, Bottom 1 Pipe Plug 2 Seal Se al Pl Plat ate e (or (or re rear ar be bear arin ing g ret retai aine ner) r) 1 Capscrew 3 Washer 3 Sleeve, wear-front Sl 1 Seal, oil-front 1 Sleeve, wear-rear Sl 1 Seal, oil-rear 1 Plug, pipe 1 Breather 1 S nap Ring, external Sn 1 Capscrew 2 Snap ring, internal Sn 1 Stop Collar 1 Screw 1 Seal, o-ring 1 Snap ring 1 Neutral Lock Arm 1 Spring, Compression 1 Roller Pin 1 Retaining ring 1 Roller Detent 1 Washer 1 Hex Head Capscrew He 1 Hex Head Capscrew He 1 Detent Locator 1 Clevis Pin 1 Stop, roller 2 Screw, set 2 Bearing, Camrol 2 Hex Nut 2 Plug, Oil Level Check 2 Shim AR Fitting 1 Power Take-off Service Manual #1022763

Illustrations


Exploded View (SP114, SP214 and RFD214 Series Clutches) Note: Typical unit illustrated.

Typical SP114 Series Clutch with Bronze Throwout Collar

Typical SP214 and RFD214 Series Clutch with Ball-Type Throwout Collar Power Take-off Service Manual #1022763

179

Illustrations


Exploded View (SP314 and RFD314 Series Clutches) Note: Typical unit illustrated.

Typical SP314 and RFD314 Series Clutch with Ball-type Throwout Collar

180



Illustrations

Exploded View (Configuration A) Note: Typical unit illustrated.


181

Illustrations


Exploded View (Configuration B) Note: Typical unit illustrated.

182



Illustrations

Exploded View (Configuration C) Note: Typical unit illustrated.


183

Illustrations


Exploded View (Configuration D) Note: Typical unit illustrated.

184



Illustrations

Exploded View (Configuration E) Note: Typical unit illustrated.


185

Illustrations


Exploded View (Configuration F) Note: Typical unit illustrated.

186



Illustrations

Exploded View (Configuration G) Note: Typical unit illustrated.


187

Illustrations


Exploded View (Configuration H) Note: Typical unit illustrated.

188



Illustrations

Exploded View (Configuration I) Note: Typical unit illustrated.


189

Illustrations


Exploded View (Configuration J) Note: Typical unit illustrated.

190



Illustrations

Exploded View (SPE114, SPE214 and SPE314 Series Throwout Mechanism) Note: Typical unit illustrated.


191

Illustrations


NOTES

192


Engineering Drawings


Engineering Drawings The engineering drawings included are listed l isted below. Note No te:: All part numbers numbers listed listed in the followi following ng engineerin engineering g drawings are for reference only and illustrate most of the variations found in the SP114, SPE114, SPE114, SP214, SPE214, SP314, SPE314, SP314SB, RFD214 and RFD314 Series PTOs. Please refer to your bill of material m aterial for part numbers specific to your model. Contact your Authorized Autho rized Tw Twin in Disc Dealer for the latest BOM and engineering drawings. 

SP114P

SP114P101 Sheet 2 of 2 (Configuration A)



SP214P

XA7500 (Configuration B)



SP214P

SP214P001 Sheet 2 of 2 (Configuration C)



SP214OP

X9845 (Configuration D)



SP314IL

SP314P121 Sheet 2 of 2 (Configuration E)



SP214IL

SP214P121 Sheet 2 of 2 (Configuration F)



SP314OP

SP314P123 Sheet 2 of 2 (Configuration G)



SP314SB

SP314S106 Sheet 2 of 2 (Configuration H)



SP314SB

SP314S117 Sheet 2 of 2 (Configuration I)



RFD214IL

TR435469 Sheet 2 of 2 (Configuration J)



SPE214P

SP214P003 Sheet 2 of 2



SP314P




SPE314P




SP114 Clutch

SP114C001 Sheet 2 of 2


193


194




SPE114 Clutch




SP214 Clutch




SP214 Clutch




SPE214 Clutch




SP314 Clutch




SP314 Clutch




SPE314 Clutch




216



1022763

Introduction

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TWIN DISC, INCORPORATED

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RACINE, WISCONSIN 53403, U.S.A.

262-638-4000/262-638-4482 (F (FAX) AX)

EC300 EC3 00 Marine Marine Con trol System Con ﬁ gur ation/Troubleshoo ting Manual #1020 #1020XXX XXX

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