TWIN DISC 1022763_ 01_08_CD

TWIN DISC INCORPORATED

Service Manual Power Take-off Model: SP-114 Series SPE-114 Series SP-214 Series SPE-214 Series SP-314 Series SPE-314 Series SP-314SB Series RFD-214 Series RFD-314 Series

Document Number: 1022763

NOTICE Twin Disc, Incorporated makes no warranty or guaranty of any kind, expressed, implied or otherwise, with regard 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 DATA Issued

January, 2008

BEFORE YOU START 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, 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 no liability) against 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, shall Twin Disc, Incorporated be liable for economic loss, consequential, punitive or incidental damages. The above warranty and remedy are subject to the following terms and conditions: 1.

Complete parts or products upon request 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 if, in the opinion of Twin Disc, Incorporated, the failure of the part or product resulted from abuse, neglect, improper maintenance or accident. 3. The warranty is void if any modifications are made to any product or part without the prior written consent of Twin Disc, Incorporated. 4. The warranty is void unless the product or part is properly transported, stored and cared for from the date of shipment to the date placed in service. 5. The warranty is void unless the product or part is properly installed and maintained within the rated capacity of 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 are of Twin Disc origin or are Twin Disc authorized replacement parts, and otherwise identical with components of the original equipment. Replacement parts or products not of Twin Disc origin are not warranted by Twin Disc, Incorporated. C. As consideration for this warranty, the original customer and subsequent purchaser agree to 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 authorized factory representative shall have authority to assume any 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 reserves the right to improve the product through changes in design or materials without being obligated to incorporate such changes in products of prior 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 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 Twin Disc, Incorporated General Limited Warranty and may be 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 .......................................................... 11 General Information ............................................................................ 11 Replacement Parts .............................................................................. 12 Preventive Maintenance/Troubleshooting......................................... 13 Safety ................................................................................................... 14 Sources of Service Information ......................................................... 15 Warranty .............................................................................................. 16

Description and Specifications ...........................17 General Information ............................................................................ 17 Finding the Twin Disc Power Take-Off Model Number and Serial Number............................................................................................ 18 Identifying the Twin Disc Power Take-off From Its Model Number.. 19 Twin Disc Power Take-Off Reference Listing .................................... 20 Twin Disc Power Take-Off Reference Listing (continued) ................ 21 Twin Disc Power Take-Off Reference Listing (continued) ................ 22 Twin Disc Power Take-Off Reference Listing (continued) ................ 23 Identifying the SAE Housing Size ...................................................... 24 Specifications ...................................................................................... 25 Twin Disc PTO Support Plate Specifications .................................... 29 Wear Limits.......................................................................................... 30 Torque Values for Fasteners .............................................................. 35

Installation ............................................................39 Installation Tips ................................................................................... 39 Prior to Installation (Ref: SAE J1033 and J617) ................................ 44 Drive Ring Installation ........................................................................ 48 Ball-Type Pilot Bearing Installation .................................................... 49 Roller-Type Pilot Bearing Installation ................................................ 50 PTO Installation to Engine or Driving Member ................................. 52 Hand Lever Position for Twin Disc Power 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 Alignment of the Sheave ............................... 59 Allowable Side Loads ......................................................................... 60 Alignment - U-Joint-Type Installation ................................................ 74 Setting Up Air Engagement on Twin Disc Power Take Offs ............. 76

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

Maintenance .........................................................83 Maintenance Tips ................................................................................ 83 Lubrication .......................................................................................... 86 Clutch Adjustment .............................................................................. 89 Friction Plate Replacement ................................................................ 90 Field Adjustment - Tapered Roller Bearing End Play (side-loaded pto applications) (Except SB Models) ................................................. 91 Field Adjustment - Tapered Roller Bearing End Play - (In-Line pto applications) ................................................................................... 92 Field Adjustment - Checking Bearing End Play - Model SP314SB Series Only...................................................................................... 93

Disassembly .........................................................95 Power Take-off Removal From The Engine ....................................... 96 Clutch Removal ................................................................................... 98 Clutch Disassembly ............................................................................ 99 Bronze Collar Disassembly ................................................................ 99 Ball Bearing Collar Disassembly ....................................................... 99 Remove the Operating Shaft and Throwout Yoke........................... 101 Clutch Shaft and Housing Disassembly - Configuration A ............ 103 Clutch Shaft and Housing Disassembly - Configuration B ............ 105 Clutch Shaft and Housing Disassembly - Configuration C & D ..... 107 Clutch Shaft and Housing Disassembly - Configuration E .............110 Clutch Shaft and Housing Disassembly - Configurations F & G ....112 Clutch Shaft and Housing Disassembly - Configurations H & I .....114 Clutch Shaft and Housing Disassembly - Configuration J .............117

8



Table of Contents

Cleaning and Inspection .................................... 119 Cleaning and Inspection ....................................................................119

Assembly.............................................................123 Clutch Assembly ............................................................................... 124 Clutch Shaft and Housing Assembly - Configuration A ................. 131 Clutch Shaft and Housing Assembly - Configuration B ................. 138 Clutch Shaft and Housing Assembly - Configurations C & D ........ 145 Clutch Shaft and Housing Assembly - Configuration E ................. 154 Clutch Shaft and Housing Assembly - Configurations F & G ........ 157 Clutch Shaft and Housing Assembly - Configurations H & I ......... 161 Clutch Shaft and Housing Assembly - Configuration J .................. 168 Install the Operating Shaft and Throwout Yoke. ............................. 171 PTO Final Assembly .......................................................................... 173

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


9

Table of Contents


Engineering Drawings .......................................193 SP114P101 Sheet 2 of 2 (Typical Configuration A) ......................... 195 XA7500 (Typical Configuration B) .................................................... 196 SP214P001 Sheet 2 of 2 (Typical Configuration C) ......................... 197 X9845 (Typical Configuration D) ...................................................... 198 SP314P121 Sheet 2 of 2 (Typical Configuration E) ......................... 199 SP214P121 Sheet 2 of 2 (Typical Configuration F) ......................... 200 SP314P123 Sheet 2 of 2 (Typical Configuration G) ......................... 201 SP314S106 Sheet 2 of 2 (Typical Configuration H) ......................... 202 SP314S117 Sheet 2 of 2 (Typical Configuration I)........................... 203 TR435469 Sheet 2 of 2 (Typical Configuration J) ............................ 204 SP214P003 Sheet 2 of 2 .................................................................... 205 SP314P001 Sheet 2 of 2 .................................................................... 206 SP314P005 Sheet 2 of 2 .................................................................... 207 SP114C001 Sheet 2 of 2 .................................................................... 208 SP114C008 Sheet 2 of 2 .................................................................... 209 SP214C001 Sheet 2 of 2.................................................................... 210 SP214C004 Sheet 2 of 2.....................................................................211 SP214C011 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, parts identification and 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 Disc origin or equal, and otherwise 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, 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 the express written approval of Twin Disc. All returned parts, new or old, emanating from any of the above-stated changes will not be accepted for credit. Furthermore, any equipment which has been subjected to such changes will not 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 Disc products have provisions for attaching lifting bolts. The holes provided are always of adequate size and number 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 53405-3698, USA by e-mail 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, SP214, SPE214, SP314, 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. 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. 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: SP114P-1 1

14

P -

1

A

B

C

D

E

{ { { { {

SP

A.

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

B.

Indicates the number of friction plates in the clutch. 1 = 1 clutch friction plate 2 = 2 clutch friction plates 3 = 3 clutch friction plates

C.

Indicates the nominal size of the clutch friction plates (inches). 14 = 14” diameter (nominal), measured just inside the root of the teeth

D.

Indicates the housing 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.

Indicates the S.A.E. housing size. 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 Reference Listing on the following pages refers to various basic design configuration designations used for the main bearing housing. These designations are used primarily to simplify explanation of the disassembly and assembly procedures in this manual. The following chart provides a general description of the basic features of each configuration and also provides general information regarding each Twin Disc Power 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.

Configuration 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

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




SP114P0

SP114P001

X

X

X

X

X

SP114P0 SP114P1

SP114P003 SP114P101

X X

X X

X X

X

X

SP114P1

SP114P102

X

X

X

SP114P1 SP114P1 SP114P1

SP114P103 SP114P104 SP114P106

X X X

X X X

SP114P1

SP114P107

X

X

SP114P1 SP114P1 SP114P1

SP114P108 SP114P109 SP114P110

X X X

X X X

X X X

SP114P1 SP114P1 SP114P1

SP114P111 SP114P112 SP114P114

X X X

X X X

X X X

SP114P1

X X

Solid

Facing Type

Split

Nodular

Drive Ring Type

Cast Iron

Roller

Ball

Ball

Bronze

Oil

Grease

Main Bearing Throwout Pilot Bearing Lubrication Collar Type Type

A X

A A

X

X

A

X X

X X X

A A A

X X

X

A X X X

A A A

X X

X X

A A A

X X X

X

SP114P115

X

X

X

X

X

SP214P0 SP214P001 SP214P0 SP214P002 SPE214P0 SP214P003

X X X

X X

X

X X

X X

SP214P0

SP214P004

X

X

SP214P0 SP214P0

SP214P006 SP214P007

X X

X X

SP214P0 SP214P1 SP214P1 SP214P1 SP214P1 SP214P1


X X X X X X

X X X X X X

SP214P1 SP214P1 SP214P1 SP214P1 SP214P1 SP214P1 SP214P1 SP214IL1

SP214P110 SP214P111 SP214P113 SP214P114 SP214P115 SP214P118 SP214P120 SP214P121

X X X X X X X X

SP214P1 SP214OP1 SP214P1 SP214P1 SP214P1 SP214P1


X

X X


C C

X X

X X

C C

X X X X X

X

X X X X

C C C C C

X X

X

X

B C C C C C C C

X X

X

X X

X X

X X X

X X

X X

X

X X

X

X

X

X

X

X

not used

X X

X X X X

C C

X

X

X

X X X X

X

not used

X X X X X X

X X

A X X

X

X X

Main Bearing Housing Configuration

X

X

not used

Support Plate Req’d

Twin Disc Power Take-Off Reference Listing (continued)

X X X X X X

X X X X X X X X X X X X

X X

X X X X

F C D C C C C

21



22

SP214P1

SP214P135

X

X

SP214P1 SP214P1

SP214P136 SP214P137

X X

X

SP214P1

SP214P138

X

X

SP214P1 SP214P1

SP214P139 SP214P140

X X

X

SP214P1 SP214P1 SP314P0

SP214P141 SP214P142 SP314P001

X X X

X

SP314P0 SP314P0 SP314P0

SP314P002 SP314P003 SP314P004

X X X

X X X

Solid

Split


X

X

C

X

X X

X X

C C

X

X

X

C

X

X

X X

X X

C C

X

X X

X X X

X X X

X

C C C

X X X

X X X

X X X

X X X

C C C

X

SPE314P0 SP314P005

X

not used

X

X

SPE314P0 SP314P006

X

not used

X

X

SPE314P0 SP314P007

X

SP314P008

X

X

X X

X

SP314P0 SP314P0 SP314P1 SP314P1 SP314P1

SP314P009 SP314P101 SP314P102 SP314P103

X X X X

X X X X

X X X X

X

SP314P1 SP314P104 SP314P1 SP314P105 SP314P1 SP314P106 SP314P1 SP314P107 SP314IL1 SP314P108

X X X X X

X X X

SP314P1 SP314P109 SP314P1 SP314P110 SP314IL1 SP314P111

X X X

SP314P1 SP314P1 SP314P1 SP314P1 SP314P1 SP314P1 SP314IL1 SP314P1 SP314OP1

SP314P112 SP314P116 SP314P117 SP314P118 SP314P119 SP314P120 SP314P121 SP314P122 SP314P123

X X X X X X X X

SP314P1 SP314IL1 SP314P1 SP314OP1

SP314P124 SP314P125 SP314P126 SP314P127

X X X

not used

X X X X X X X

X X X

X X X

X X X X

X X

C C

X X X

X X X X

X X X X

C C C C

X

X X X X

X X X X

C C C C

X X

X X X

X X X

F C C

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

F C C C C C C E C

X X X X

X X X X

X X X X

G C E C

X

X

X

G

X X X

X X not used

X X

X X X

X not used

C C

X

X

not used

X X

X

X X X

not used

X X X X X X X

X

Facing Type

X X

X

Nodular

Drive Ring Type Cast Iron

Roller

Ball

Ball

Bronze

Oil

Grease







SP314S106 SP314S107 SP314S108 SP314S114 SP314S115 SP314S116

X X X X X X

X X X X X X

not used

SP314SB1 SP314SB1 SP314SB1 SP314SB1

SP314S117 SP314S118 SP314S119 SP314S120

X X X X

X X X X

not used

SP314SB1 SP314SB1 SP314SB1 RFD214IL RFD214IL

SP314S122 SP314S123 SP314S124 TR435469 TR435469A

X X X X X

X X X X X

not used

RFD214IL RFD314IL RFD314IL RFD314IL

TR435469B TR435470 TR435470A TR435470B

X X X X

X X X X


not used not used not used not used not used not used not used not used not used not used

X X X X


SP314SB1 SP314SB1 SP314SB1 SP314SB1 SP314SB1 SP314SB1

X X X X X

X X X X X

X X X X X

H H H H H

X X X X

X X X X

X X X X

H I H H

X X X X X X

X X X X X X

X X X X

H H H H J J

X X X X

X X X X

Facing Type

Split

Nodular

Drive Ring Type

Cast Iron

Roller

Ball

Ball

Bronze

Oil

Grease


Solid



J E E E

23



Identifying the SAE Housing Size

D A

B

C

Table 1. SAE Housing Identification A

Housing SAE Pilot Diameter Housing Size mm.

24

inches

B

C

D

Housing Flange O.D.

Bolt Circle Diameter

Bolt Holes Dia.

Qty. mm.

inches

mm.

inches

mm.

inches

0

647.70 25.500

711.2

28.00

679.45 26.750 16

14.30

0.563

1

511.18 20.125

552.4

21.75

530.22 20.875 12

12.29

0.484

2

447.68 17.625

489.0

19.25

466.72 18.375 12

10.99

0.433




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

PTO Model

SP114 Series

Grease

Split Drive Plate

2400

1950

Steel or Nodular Drive Ring Solid Drive Plate(s)

3000

Split Drive Plate

2750

SPE114 Series

Grease

2400

1950

3000

2750

SP214 Series

Grease

2500

1950

3000

2750

SPE214 Series

2400

Grease

2500

1950

2400

SP214 Series

Oil

2400

-----

2400

2400

SP314 Series

Grease

2500

1920

3000

2700

SP314 Series

Oil

2500

1920

3000

2700

SPE314 Series

Grease

2500

1920

3000

2700

SP314SB Series

Grease

-----

-----

3000

-----

RFD214 Series

Grease

2200

2200

2200

2200

RFD314 Series

Grease

2200

2200

2200

2200

Pilot bearing position (If used) (Refer to BOM and Twin Disc Power Take-Off Reference Listing on previous 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.).

Roller-Type Table 3. Roller-Type Pilot Bearing Dimensions Roller

Bearing O.D.

Bearing M2467 72 mm. (2.835 in.) M2529

Bearing Nominal

Bearing Nominal

Width (C)

Width +/- tolerance

30.1 mm. (1.185 in.)

0.5 mm. (0.020 in.)

80 mm. (3.15 in.) 34.86 mm. (1.3725 in.) 0.5 mm. (0.020 in.)

M2713 100 mm. (3.94 in.) 39.62 mm. (1.5600 in.) 0.5 mm. (0.020 in.) Power Take-off Service Manual #1022763

25



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

Recommended End Play Model Number mm. inches SP114P Series 0.15 - 0.25 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 SP314IL Series n/a (Ball Bearing) n/a (Ball Bearing) RFD214IL Series n/a (Ball Bearing) n/a (Ball Bearing) RFD314IL Series n/a (Ball Bearing) n/a (Ball Bearing)

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

Recommended End Play Model Number mm. inches SP114P Series 0.23 - 0.30 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 SP314IL Series n/a (Ball Bearing) n/a (Ball Bearing) RFD214IL Series n/a (Ball Bearing) n/a (Ball Bearing) RFD314IL Series n/a (Ball Bearing) n/a (Ball Bearing) 26




Filling the Main Bearing Cavity during initial assembly. (Refer to BOM and Twin Disc Power Take-Off Reference Listing on previous pages.) Grease Lubrication: Hand-pack the bearings before assembly. Hand-packing requires that the roller elements and bearing races be coated with grease. After 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. Oil Lubrication SP214OP Series (such as SP214P125): Fill with oil through the breather hole at the top of the bearing carrier until the 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. 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.

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 indicator base mounted on a rigid part of the engine. See the illustration in 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

E F G Recommended Hole Hole Thickness Quantity Diameter

(+.005/+.001”)

SP214P, SPE214P, SP214IL, SP314P 190.50 mm. SPE314P, SP314OP (7.50 in.) SP314IL (SP314P108 & SP314P111) 190.50 mm. SP214OP (7.50 in.) SP314IL(SP314P121 & 200.01 mm. (7.875 in.) SP314P125)

225.43 mm. 127.0 mm. (8.875 in.) (5.0 in.) 225.43 mm. 139.70 mm. (8.875 in.) (5.50 in.) 234.95 mm. 136.65 mm. (5.38 in.) (9.25 in.)

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.) (11.25 in.) (6.38 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 drawing. Angular offset of the through holes must be calculated with 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 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 in your PTO)

Sheave Housing or Housing Bearing Carrier Part Number Part Number

mm.

inches

Bore Dim. B (Maximum) mm.

inches

152.451 6.002

Illustration Number

A7502

160.020 6.300

8424 8424F 8431

127.025 5.001 127.025 5.001 127.025 5.001

n/a n/a n/a

n/a n/a n/a

3 3 3

1015764 02018611 02036012

190.030 7.4815 140.040 5.5134 160.025 6.3002

n/a n/a n/a

n/a n/a n/a

6 3 6

A5194 A5194E A5195

152.425 6.001 152.425 6.001 152.425 6.001

n/a n/a n/a

n/a n/a n/a

1 1 1

9827 1015768 1016518

152.425 6.001 n/a n/a 160.023 6.3000 n/a n/a 160.065 6.302 160.065 6.302

8 7 4

160.065 160.025 150.025 180.040

4 7 7 2

1016518A 1019124 02036020 02018597

30

Bore Dim. A (Maximum)

6.302 160.065 6.302 6.3002 n/a n/a 5.9065 n/a n/a 7.0882 n/a n/a

5




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 A5166 A5190 A5190AO A5190B A5190BZ A5190CQ A6515B A6515N A6515R A6515T A6515U A6619B A6619K A6619Q B5027A B5027AQ B5027AR B5027AS B5027AV B5027AW B5027AX B5027AZ B5027B B5027BA B5225 B5225B B5225D B6247 1015786 1016185 1016521 1016522 1021911 1021912 1021913 1022209 02035496 02035709 02036022

Pilot Bearing Journal (Min.)

Main Bearing Journal Dim. A (Min.)

mm.

mm.

inches

34.9987 1.3779 95.3008 34.9987 1.3779 73.8556 34.9987 1.3779 73.8556 34.9987 1.3779 73.8556 34.9987 1.3779 73.8556 34.9987 1.3779 73.8556 34.9987 1.3779 95.3008 34.9987 1.3779 95.3008 34.9987 1.3779 95.3008 34.9987 1.3779 95.3008 40.0000 1.5749 95.3008 44.9987 1.7716 95.3008 44.9987 1.7716 95.3008 44.9987 1.7716 95.3008 34.9987 1.3779 95.3008 29.9593 1.1795 95.3008 34.9986 1.3779 95.3008 34.9986 1.3779 95.3008 34.999 1.3779 95.301 34.9987 1.3779 95.3008 34.9987 1.3779 95.3008 44.9987 1.7716 95.3008 34.9987 1.3779 95.3008 34.9987 1.3778 95.3008 45.0037 1.7718 95.3008 45.0037 1.7718 95.3008 45.0037 1.7718 95.3008 not used 95.2779 not used 90.013 not used 90.013 not used 90.030 not used 90.030 44.9987 1.7716 99.9973 44.9987 1.7716 99.9973 34.9910 1.3776 79.9973 not used 90.021 34.9910 1.3776 79.9973 34.9910 1.3776 99.9973 not used 120.0125

Main Bearing Journal Dim. B (Min.)

inches

mm.

inches

3.752 2.9077 2.9077 2.9077 2.9077 2.9077 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.7511 3.5438 3.5438 3.5445 3.5445 3.9369 3.9369 3.1495 3.5441 3.1495 3.9369 4.7249

95.3008 n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a 95.3008 95.3008 95.3008 95.3008 95.301 95.3008 95.3008 95.3008 95.3008 95.3008 n/a n/a n/a 95.2881 n/a n/a 90.030 90.030 n/a n/a n/a 90.021 n/a n/a 80.0125

3.752 n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 3.752 n/a n/a n/a 3.7515 n/a n/a 3.5445 3.5445 n/a n/a n/a 3.5441 n/a n/a 3.1501

Front & Rear Seal Journals (Min.)

mm.

Illus. Number

inches

92.075 3.625 n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a 90.018* 3.544* 71.37** 2.810** n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a 88.88 3.499 n/a n/a n/a n/a n/a n/a

9 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 2 2 2 8 3 4 5 5 2 2 10 6 10 7 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. Note: All threads and bearing face to be lubricated with light oil film prior to assembly.

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

SAE Grade 5

Thread Diameter 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

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

In Aluminum

N-m (+ or - 5%) 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 Fittings, Hose Fittings, and O-ring Plugs Nominal Nominal Thread N-m (+ or - 5%) lb.-ft. (+ or - 5%) 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.

Tapered roller bearing end play adjustment is different in SP114, SPE114, SP214, SPE214, SP314 and SPE314 Series Power TakeOffs for side load applications than it is for in-line applications. Insure that the adjustment is correct for the application.

2.

All SP114, SPE114, SP214, SPE214, SP314 and SPE314 Series Power Take-Offs are manufactured at Twin Disc’s factory with the tapered roller bearing end play adjusted for side-load application.

3.

RFD214IL and RFD314IL Series Power Take-Offs have ball-type main bearings. No adjustment is required.

4.

SP314SB Series Power Take-Offs have roller-type main bearings. No adjustment is required.

5.

Tapered roller bearing end play in SP114, SPE114, SP214, SPE214, SP314 and SPE314 Series Power Take-Offs used for in-line applications must be adjusted to specifications shown in Tapered Roller Bearing End Play in the Description and Specifications section of this manual. 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 in 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 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 for End Play Adjustment

Alignment 6.

The flywheel and flywheel housing alignment must be within specifications. Perform the measurements shown in Prior To Installation in this Installation section.

7.

Avoid excessive misalignment between the engine and PTO. Check the following if abnormal wear of parts exists: a.

Excessive loads tend to deflect parts to which PTOs are mounted. A dial indicator can be mounted on a 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.

Readings taken before the drive is installed with the engine 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.) at the bearing carrier.

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


Installation


8.

In a u-joint-type installation, to realize the longest possible 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 line of the driven unit shaft. See information contained in Alignment-U-JointType Installation in this Installation section.

9.

In side-load installations, alignment between the driveR and driveN pulleys must be carefully established and maintained. See Position and Measure Alignment of the Sheave in this Installation section.

Drive Ring 10.

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

Pilot Bearings 11.

Ball-type pilot bearings and Roller-type pilot bearings must be installed properly. See Ball-Type Pilot Bearing Installation or Roller-Type Pilot Bearing Installation in this Installation section.

Support Plate 12.

When mounting the engine and Power Take Off in the machine, a customer-supplied 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/Allowable Side Load Pulls 13.

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

14.

Avoid excessively loose belts or chains. Belt tension or chain adjustment that is below specifications can cause belt/chain “whip” during operation, resulting in bearing failure and shortened power take-off service life.


41

Installation


Deflection Caused by Side Load Pulls 15.

Power Take-Off deflection due to loads imposed by the application should not exceed specified limits shown in PTO Deflection in the Description and Specifications section. Deflection 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.

Lubrication 16.

42

Verify that the PTO is properly lubricated prior to starting the engine. a.

The throwout collar is lubricated by grease through a grease fitting on the outside of the main housing.

b.

SP214OP and SP314OP Series main bearings are lubricated by oil contained in the main bearing cavity.


Installation


c.

All other SP114, SPE114, SP214, SPE214, SP314, SPE314, SP314SB, RFD214 and RFD314 Series main bearings are lubricated by grease through a grease fitting in the housing or bearing carrier.

d.

The sealed-for-life pilot bearing should not be lubricated during service.

e.

Pilot bearings designed for periodic lubrication must be greased. See Lubrication in the Maintenance section for more information. Improper lubrication will result in premature failure of components. DO NOT OVERGREASE!

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

Clutch Adjustment 17.

Verify that the clutch is adjusted according to the procedure outlined 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 Lever Position 18.

Proper hand lever position is required to obtain long service life 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.

Air Engagement Mechanisms 19.

Air engagement mechanisms must be installed and adjusted properly 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 Disc products mount directly onto the flywheel of the engine. Flywheel-to-driven 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 by engine to Twin Disc match-up regardless of the cause of interference. This engine crankshaft end play check is considered mandatory. Note: All measurements must be taken with the engine or motor mounted on its supports after the flywheel and housing have been thoroughly cleaned. 1.

44

Measure and record the engine crankshaft or motor shaft endplay using a dial indicator. Record this value, as it will be used later._______


Installation


2.

Bolt the indicator to the flywheel so the indicator is perpendicular to the flywheel housing face and the indicator stem rides on the flywheel housing face.

Figure 7. Checking Flywheel Housing Face 3.

Rotate the shaft through on entire revolution and note the runout. The total indicator reading (T.I.R.) must not exceed: SAE #0 Housing 0.41 mm. (0.016 in.) SAE #1 Housing 0.30 mm. (0.012 in.) SAE #2 Housing 0.28 mm. (0.011 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.

Readjust the indicator so the stem rides on the pilot bore of the flywheel housing face.

Figure 8. Checking Flywheel Housing Bore 5.

Rotate the shaft through one entire revolution and note the runout. The total indicator reading (T.I.R.) should not exceed: SAE #0 Housing 0.41 mm. (0.016 in.) SAE #1 Housing 0.30 mm. (0.012 in.) SAE #2 Housing 0.28 mm. (0.011 in.)

6.

Remove the indicator base from the flywheel and bolt it to the flywheel housing face. Position 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 the shaft through one entire revolution and note the face runout of the flywheel. The total indicator reading (T.I.R.) must not exceed 0.01mm. (0.0005 in.) per 25.4 mm. (per inch) 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 the indicator stem so it rides on the driving ring pilot bore of the flywheel.

Figure 10 . Checking Driving Ring Pilot Bore of Flywheel 9.

Rotate the shaft through one entire revolution and note the driving ring bore eccentricity. The total indicator reading (T.I.R.) must not exceed 0.13 mm. (0.005 in.).

10.

Adjust the indicator stem so that it rides on the pilot bearing bore cavity.

Figure 11. Checking Pilot Bearing Bore of Flywheel 11.

Rotate the shaft through one entire revolution and note the pilot bearing 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 and inspection of the drive ring in the Cleaning and Inspection section of this manual before proceeding. 1.

Clean the drive ring and flywheel of any dirt or debris as necessary.

2.

Use crocus cloth or emery cloth to remove any surface imperfections such as nicks, burrs, and sharp edges on the O.D. or the surface that will be mounted against the flywheel face.

3.

Use crocus cloth or emery cloth to remove any surface imperfections 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 ring.

4.

Position the drive ring against the flywheel, piloted in the mounting bore, and secure with eight hex-head capscrews. Torque the capscrew 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 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.

Support the output end of the clutch shaft.

2.

Make sure the clutch shaft end stub is free of surface imperfections such as nicks, burrs, and sharp edges. Remove them using fine emery cloth or crocus cloth.

3.

Tap the pilot bearing onto the clutch shaft. The front face of the pilot bearing should be positioned flush with 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 Pilot Bearing on the Shaft


49

Installation


Roller-Type Pilot Bearing Installation Some Twin Disc Power Take-offs are designed with roller-type pilot bearings. All of the roller-type bearings available from Twin Disc are the separate race type, i.e. the inner race is removable from the outer race and seal assembly. 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 Disc Power Take-Off Reference Listing 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.

Position the pto on the bed of a press with the pilot bearing end up and the output end of the clutch shaft resting firmly on a solid support. Note: The PTO must be standing on the output end of the shaft.

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

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

1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234

1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234

123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123

123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123

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 pilot bearing inner race on the clutch shaft so it is flush with the input end of the shaft.

3.

Carefully measure dimension (a). Record the measurement.

4.

Refer to the Roller-Type Bearing Dimensions table 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 (dimension b).

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

Install the pilot bearing outer race in the flywheel and position 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 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 the PTO housing flange, flywheel housing flange, and pilot bearing bore of any debris.

2.

Make sure the housing flange and flywheel housing flange are free of surface imperfections such as nicks, burrs, and sharp edges. Remove them using fine emery cloth or crocus cloth.

3.

Install a minimum of three guide studs in the flywheel housing, located approximately 120o apart. Using a suitable hoist, position the PTO on the guide studs and slide it against the flywheel housing, 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 the clutch plate 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 properly with the teeth of the drive ring. 4.

Secure the PTO housing to the flywheel housing with (12 or 16) hexhead capscrews. 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 output end of the main shaft with a soft hammer to remove any preload on the main bearings and/or pilot bearing.

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

52


Installation


6.

Measure the crankshaft endplay again. The measurement must be the 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 except SP314SB models: (SP314SB skip to step 12) 7.

Install the key (34) on the output end of the clutch shaft (33) and install the drive sheave, chain sprocket, or u-joint flange as the application requires.

8.

Align the sheaves as described 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.

Install the support plate if it is to be used. Refer to support plate 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 to 80 Nm. (59 lb.-ft.). Note: Verify proper shimming and alignment of the support plate.

10.

Install and tighten the belts to the manufacturer’s specifications, being sure that belt tension 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 three (only) of the capscrews (48) that attach the sheave housing (60) to the clutch housing (44). Remove three that are about 120 degrees apart. Install three threaded guide pins in the holes to support the sheave housing as it is being removed.

13.

Remove the remaining capscrews (48) and remove the sheave housing.

14.

Install the sheave. Use a hydraulic power unit to properly position the sheave.

Be sure to install the power unit so the force is directed through the shaft and not across any of the bearings. The bearings may be damaged, resulting in premature failure. 15.

Align the sheaves as described in Position and Measure Alignment of the Sheave in this section.

The driveR sheave must be aligned with the driveN 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.

54

Remove the three guide dowels and replace with the remaining three hex head capscrews. Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section of this manual.


Installation


17.

Mount the dial indicator base on a secure location on the PTO housing. Position the tip of the dial indicator 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 sheave through one complete revolution and recheck accuracy with at least one other revolution. Read the total amount of dial indication sweep. Total runout must not exceed 0.254 mm. (0.010 in.) 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 other two locations as shown, marking the “high” spot of each. Total runout must not exceed 0.254 mm. (0.010 in.) T.I.R. Note: All three readings will normally be the same. If one is 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.

Install the belts. 20.

Remove the sheave housing as described above.

21.

Install the belts loosely in position in the grooves.


55

Installation


22.

Reinstall the sheave housing as described above.

23.

Tighten the belts to the manufacturer’s specifications, being sure that belt tension 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.)

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 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, 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 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, 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 a stop collar on the operating shaft so that the throwout yoke is centered on the throwout collar. Contact Twin Disc’s Service Department for information 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 the neutral lock arm hex head capscrew that secures it to the operating shaft.

2.

Engage the clutch.

3.

Position the camrols (92) at the clearance “X” of 2.286 mm. (0.090 in.) by using feeler stock or gauges.

4.

Place the detent roller (84) in the forward groove of the detent locator (88).

5.

Position the neutral lock arm (80) on the operating shaft to provide a clearance of 3.148 mm. (0.120 in.) between the snap ring (79) on the roller pin (82) and the neutral lock arm.

6.

Tighten the neutral lock arm hex head capscrew and torque to 40.7 Nm (30 lb.-ft.). Power Take-Off Service Manual #1022763

Installation


Position and Measure Alignment of the Sheave 1.

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

2.

Position the sheave (driveR sheave on the PTO shaft) so it is aligned with the driveN sheave (on equipment being driven by the PTO).

3.

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

4.

Place a tight cord or straight edge against both edges of the flat face 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 sheaves to meet specifications.

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 DriveN 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 CENTERLINE OF SIDE LOAD x

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: SP214IL and SP314IL Power Take-offs are recommended for in-line, not side-loaded, applications.

60


Installation


Table 14. Allowable Side Loads

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

1000

1 3390

2 2600

3 2120

‘X’ Distance 4 5 1780 1535

1500

3390

2600

2120

1780

1535

1350

1210

1090

2000 2200

3390 3390

2600 2600

2120 2120

1780 1780

1535 1535

1350 1350

1210 1210

1090 1090

RPM

6 1350

7 1210

8 1090

1000 RPM

Maximum Load, Lbs.

Table 14.1 4000

1500 RPM

3500

2000 RPM

3000

2200 RPM

2500 2000 1500 1000 500 0 0

2

4

6

8

10

"X" Distance, inches (see draw ing)


61

Installation


Table 14. Allowable Side Loads (continued)

(Table 14.2) SP214P (M1969A) (SP214P111) RPM 1000 1500 2000 2200

1 4030 4030 4030 4030

2 3240 3240 3240 3240

3 2710 2710 2710 2710

‘X’ Distance 4 5 2330 2050 2330 2050 2330 2050 2330 2050

6 1820 1820 1820 1820

7 1640 1640 1640 1640

Maximum Load, Lbs

Table 14.2

8 1500 1500 1500 1500

1000 RPM

4500

1500 RPM

4000

2000 RPM

3500

2200 RPM

3000 2500 2000 1500 1000 500 0 0

62

2

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

8

10


Installation



(Table 14.3) SP214P (M1985, M1985A): (SP214P001, SP214P004, SP214P008, SP214P101, SP214P114, SP214P115, SP214P120, SP214P122, SP214P128, SP214P130, SP214P135, SP214P137, SP214P138, SP214P139, SP214P142) RPM 1000 1500 2000 2200

1 5360 5360 5360 5360

2 4320 4320 4320 4320

3 3610 3610 3610 3610

‘X’ Distance 4 5 3100 2720 3100 2720 3100 2720 3100 2720

6 2420 2420 2420 2420

7 2180 2180 2180 2180

8 1990 1990 1990 1990

1000 RPM

Table 14.3

1500 RPM

6000

2000 RPM Maximum Load, Lbs

5000

2200 RPM

4000 3000 2000 1000 0 0

2



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 1500

5980 5980

4700 4700

3880 3880

3290 3290

2870 2870

2540 2540

2270 2270

2060 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

Maximum Load, Lbs

6000

2200 RPM

5000 4000 3000 2000 1000 0 0

64

2


8

10


Installation



(Table 14.5) SP214OP (M2529) (SP214P125) ‘X’ Distance 4 5

RPM

1

2

3

1000 1200

7750 7330

6730 6730

5480 5480

4630 4630

1800 2400

6480 5950

6130 5650

5480 5350

4630 4630

6

7

8

4000 4000

3530 3530

3160 3160

2850 2850

4000 4000

3530 3530

3160 3160

2850 2850

1000 RPM

Maximum Load, Lbs

Table 14.5 9000

1200 RPM

8000

1800 RPM 2400 RPM

7000 6000 5000 4000 3000 2000 1000 0 0

2



8

10

65

Installation



(Table 14.6) SPE214P (M2529) (SPE214P003 ) RPM 1000 1500 2000 2200

1 5980 5980 5980 5980

2 4700 4700 4700 4700

3 3880 3880 3880 3880

‘X’ Distance 4 5 3290 2870 3290 2870 3290 2870 3290 2870

6 2540 2540 2540 2540

7 2270 2270 2270 2270

1000 RPM

Table 14.6

1500 RPM

7000

2000 RPM

6000 Maxcimum Load, Lbs

8 2060 2060 2060 2060

2200 RPM

5000 4000 3000 2000 1000 0 0

66

2


8

10


Installation



(Table 14.7) SP314P (MA1122) (SP314P118) RPM 1000 1500 2000 2200

1 6170 5350 5025 4850

2 5850 5120 4750 4650

3 5580 4850 4450 4350

‘X’ Distance 4 5 4720 4110 4650 4110 4250 4110 4150 4000

6 3630 3630 3630 3630

7 3260 3260 3260 3260

8 2945 2945 2945 2945 1000 RPM

Table 14.7

1500 RPM

7000

2000 RPM

Maximum Load, Inches

6000

2200 RPM

5000 4000 3000 2000 1000 0 0

2



8

10

67

Installation



(Table 14.8) SP314P (M1985, M1985A) (X9585, SP314P119, SP314P002, SP314P101, SP314P110, SP314P116, SP314P126)

1000

1 6170

2 5120

3 4200

‘X’ Distance 4 5 3570 3100

1500 2000 2200

5350 5025 4850

5120 4750 4650

4200 4200 4200

3570 3570 3570

RPM

3100 3100 3100

6 2740

7 2460

8 2220

2740 2740 2740

2460 2460 2460

2220 2220 2220 1000 RPM

Table 14.8

1500 RPM

7000

2000 RPM

Maximum Load, Lbs

6000

2200 RPM

5000 4000 3000 2000 1000 0 0

68

2


8

10


Installation



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

RPM

1

2

3

1000 1500

6170 5350

5850 5120

5580 4850

4720 4650

2000

5025

4750

4450

2200

4850

4650

4350

6

7

8

4110 4110

3630 3630

3260 3260

2945 2945

4250

4110

3630

3260

2945

4150

4000

3630

3260

2945

1000 RPM

Table 14.9

1500 RPM

7000

2000 RPM

Maximum Load, Lbs

6000

2200 RPM

5000 4000 3000 2000 1000 0 0

2



8

10

69

Installation



(Table 14.10) SP314P (M2529, M2713): (SP314P004, SP314P008, SP314P105, SP314P107, SP314P112)

1000 1500 2000

1 6170 5350 5025

2 5850 5120 4750

3 5580 4850 4450

‘X’ Distance 4 5 4720 4110 4650 4110 4250 4110

2200

4850

4650

4350

4150

RPM

4100

6 3630 3630 3630

7 3260 3260 3260

8 2945 2945 2945

3630

3260

2945 1000 RPM

Table 14.10

1500 RPM

7000

2000 RPM

Maximum Load, Inches

6000

2200 RPM 5000 4000 3000 2000 1000 0 0

2

4

6

8

10

"X" Distance, Inches (See Sketch)

70


Installation



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

1

2

1000 1500 2000 2200

‘X’ Distance 4 5

3

6

7

8

Consult Twin Disc

1000 RPM

Table 14.11

1500 RPM

1

2000 RPM

Maximum Load, Lbs

1

2200 RPM

1 1 0 0 0 0

2

4

6

8

10

"X" Distance, Inches (See Sketch)


71

Installation



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

1500

‘X’ Distance** 5 6 7 8 9 10 10600 11900 13600 14700 12800 11350

1800 2100

10000 11250 12800 13900 12150 10750 9550 10750 12250 13300 11600 10300

2400

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

RPM

9900

1500 RPM

Table 14.12

1800 RPM 16000

2100 RPM

15000

2400 RPM

14000 13000 12000 11000 10000 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 14.13) SP314SB (No Pilot Bearing) (SP314S117) RPM 1600

5 9612

‘X’ Distance** 6 7 10821 12378

8 11065

1800 9278 10445 11948 10681 2000 8989 10119 11576 10349 2200 8736 9835 11250 10057 ** See Illustration Below for proper measurement of “X” Distance

1600 RPM

Table 14.13

Maximum Load, Lbs

1800 RPM 13000 12500 12000 11500 11000 10500 10000 9500 9000 8500 8000

2000 RPM 2200 RPM

3

4

5

6

7

8

"X" 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 between the center line of the power take-off shaft and the center line of the driven unit shaft. 1.

It is extremely important that the forks of the drive shaft between the pto and the driven unit lie in the same plane. This will prevent severe vibrations from occurring in the drive shaft.

2.

The center lines of the pto shaft and the driven unit input shaft must be offset within the limits recommended by the u-joint manufacturer to prolong the life of the universal joint needle bearings.

3.

It is extremely important that the center lines of the pto shaft and driven unit input shaft be parallel. This will further prevent vibrations which cause premature pto bearing failure.

4.

Proper lubrication of the pto is important for satisfactory service. Refer to lubrication specifications in 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 align the engine and gear head by this method, two accurate straight edges at least 91 cm. (36 in.) long and a tape measure are required.

6.

Place the straight edges horizontally along the face of the pto and gear 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 the shafts so the straight edges are in a vertical position. Measure 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 the engine and driven unit. Recheck A and B, C and D 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 Installation


75

Installation


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

The cylinder should be located so that the piston moves forward and backward in exactly the same direction as the engagement lever and is aligned so it travels in exactly the same plane.

2.

The air cylinder must be of sufficient size to operate the required torque to engage the clutch. It must have some means to make adjustment on the piston stroke.

3.

Air pressure must be constant. Low pressures could give only partial engagement which will cause failures of the clutch and throwout collar.

4.

The piston travel must be within limits established to both fully engage and fully disengage the clutch. Failure to provide these parameters will cause failure and possible breakage of the clutch.

5.

The engaging cylinder must not place a pressure either in the engaged or disengaged direction after completion of its cycle. The throwout collar must float free after engagement or disengagement. Operating the pto with constant pressure on the throwout collar will result in failure. Suggestion: A slotted connector, similar to the one 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 cylinder must be readjusted when the clutch is readjusted and any time the travel or position moves from the specifications described above.

Determine the length of travel for the engaging cylinder. 7.

Multiply the length of the hand lever by the value shown in the following 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 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 the force value in the chart below by the length of the hand lever (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 (newtons) Force (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 consist of a manually engaged and disengaged disconnect clutch mounted on an output shaft in a cast iron 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. 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. Input components 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 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 required 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 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 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 engine off and disengage the clutch before clearing a jammed 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, refer to the Clutch Adjustment Procedure in the Maintenance section of this manual.

Insufficient clutch engagement force can cause clutch slippage 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 with the clutch engaged. See Hand Lever Position for Twin Disc Power Take-Offs in the Installation section of this manual.

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


81

Operation


NOTES

82


Maintenance


Maintenance

Maintenance Tips Tapered Roller Bearing Adjustment 1.

Tapered roller bearing end play adjustment should have been adjusted 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 information in the Installation section of this manual.

Pilot Bearings 2.

Ball-type pilot bearings and Roller-type pilot bearings must be installed properly. Some pilot bearings are to be greased periodically, See Lubrication this Maintenance section.

Lubrication 3.

Verify that the PTO is properly lubricated prior to starting the engine and at all times during operation. Refer to the Twin Disc Power Take-Off Reference Listing 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 frequently to insure that the clutch is adjusted according to the procedure outlined in Clutch Adjustment in this 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.


83

Maintenance


Hand Lever Position 5.

Throwout bearing failures may be, among other causes, the result 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.

Alignment 6.

The flywheel and flywheel housing alignment should have been set within 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 the Installation section of this manual.

Support Plate 7.

When mounting the engine and Power Take-Off in the machine, a customer-supplied support plate may be required to support the output end of the PTO housing. Proper installation 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. See the information about customersupplied support plates and Twin Disc Support Plate Specifications contained in the Description and Specifications section of this manual.

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

84


Maintenance


Belt or chain tension/Allowable Side Load Pulls 8.

Maintain proper belt or chain tension adjustments. Avoid excessively tight or excessively loose belts or chains. Failure to maintain proper belt or chain adjustment can cause bearing failure and shortened power take-off service life.

Deflection Caused by Side Load Pulls 9.

Maintain proper side that do not exceed specified limits shown in Allowable Side Load Pulls in this Maintenance section and PTO Deflection in the Description and Specifications section.

Air Engagement Mechanisms 10.

Air engagement mechanisms remain properly adjusted at all times. See Setting Up Air Engagement on Twin Disc Power Take-Offs in the Installation section.


85

Maintenance


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

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

Oil Specifications for oil-lubricated main bearings - SP211OP and 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 in the Description and Specifications section, the exploded views in the Illustration section and Engineering Drawings near the back of this manual. Table 18. Quick-reference lubrication 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 hole.

Every 8-10 hrs. MS, DG or better Drain & fill SAE No. 30 Engine Oil 6 months/1000 hrs.

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 Models SP114, SPE114, SP214, SPE214, SP314, SPE314, SP314SB, RFD214 and RFD314 Series (except SP214OP, and SP314OP Series) Apply 1 cc of grease (one shot from a grease gun) before start-up and then every 8-10 hours operation thereafter, through the fitting on the bearing carrier (55) or sheave housing.

Models SP214OP Series (such as SP214P125) The tapered roller bearings are lubricated from oil contained 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 and refill the oil cavity every 6 months or 1000 hours (whichever occurs first).

Models SP314OP Series (such as SP314P123 & SP314P127) The tapered roller bearings are lubricated from 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. No periodic check is necessary. Power Take-off Service Manual #1022763

87

Maintenance


Operating Shaft Fittings All Models SP114, SPE114, SP214, SPE214, SP314, SPE314, SP314SB, RFD214 and RFD314 Series Apply 1 cc. of grease (one shot from a grease gun) before starting and then every 3 months or 100 hours operation (whichever occurs first).

Throwout Collar All Models SP114, SP214, SP314SB, RFD214 and RFD314 Series Apply 1 cc. of grease (one shot from a 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 SPE114, SPE214 and SPE314 Series No throwout collar is used. No lubrication is necessary.

Pilot Bearing All Models SP114, SPE114, SP214, SPE214, SP314, SPE314, RFD214 and RFD314 Series (except sealed-for-life style bearings). 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 Models SP114, SPE114, SP214, SPE214, SP314, SPE314, RFD214 and RFD314 Series with sealed-for-life style bearings 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 All Models Lubricate the clutch linkage mechanism, cotter pins, clevis pins and levers, with engine oil every 500 hours of operation.

Lubricate sufficiently but sparingly. Excess oil can splash or drip 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 have a wear in period and the clutch may require several adjustments before the new plates are worn in. After wear in, clutch adjustment should be checked regularly. Heavy duty applications (rock crushers, etc.,) which have frequent engagements, numerous engagements in an operating day or relatively long periods of slip require more frequent readjustment than light duty applications. Adjust the clutch BEFORE it overheats, does not pull, or the operating lever jumps from the engaged position. But these symptoms are indications that clutch adjustment is required. Adjustment measurements are made by fitting a 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.

Disconnect any power engagement devices from the operating shaft if so equipped.

To adjust the clutch: Refer to the exploded views in the Illustration section. 2.

Remove the instruction cover plate (45) from the housing (44) and turn the clutch shaft until the adjusting ring lock pin (25) can be reached.

3.

Disengage the adjusting lock pin and insert a cotter pin or small nail into the hole provided to hold it in the disengaged position. Turn the adjusting yoke (26) to the right (or clockwise when looking at the 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 the cotter pin or small nail. Re-engage the adjusting ring lock pin.

5.

Repeat steps 3 and 4 above as necessary until the proper torque reading 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 views in the Illustrations section. Common symptoms indicating that the friction plates (6) are worn out are: 1.

The adjusting yoke (26) cannot be turned clockwise any further.

2.

The friction face surfaces have worn flush with the rivet heads, or the rivets are loose.

It is necessary to remove and disassemble the clutch assembly to replace the friction plates. Refer to instructions in the Disassembly and Assembly sections of this manual.

90


Maintenance


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

All Models SP114, SPE114, SP214, SPE214, SP314 and SPE314Series (except SP314IL, SP314SB, RFD214 and RFD314 Series): The only approved method for field adjustment of tapered roller bearings (39, 40, 41, 42) in Twin Disc Power Take-Off units is by the use of a dial indicator to read actual bearing end play.

SP314IL, SP314SB, RFD214 and RFD314 Series: There is no adjustment of ball-type or cylindrical roller-type bearings. Adjustment: Refer to the procedure in (Final Setting) Measure and Set Bearing End Play as described for your bearing housing configuration in the Assembly section of this manual. Refer to the illustration below and the Tapered Roller Bearing 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 Models SP114, SPE114, SP214, SPE214, SP314 and SPE314 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: Not designed for in-line applications.

92

1.

Field experience for tapered roller bearings (39, 40, 41, 42) used with in-line drive installations indicates that extra care must be taken when adjusting the power take-off tapered roller bearings.

2.

The end play for these applications is special for the above types of applications.

3.

Set bearing end play for these special applications using the method described for side-loaded applications on the previous pages, but set to the specifications shown in 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 Take-Off Reference Listing in the Description and Specifications section, the exploded views in the Installation section and Engineering Drawings near the back of this manual.

Models SP314SB Series 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 after work is done on the unit. Bearing end play must be 0.20 mm - 0.89 mm (0.008 - 0.035 inches) 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 bearing end play. 1.

Securely support the unit with the clutch shaft in a vertical position 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 an eyebolt in the thread at the output end of the shaft. Attach a hoist with a thrust bearing-equipped swivel hook to the eyebolt.

3.

Securely attach a dial indicator to the housing and locate the stem so the tip is contacting the end of the shaft and movement of the tip is exactly vertical, the same direction as the movement of the shaft.

4.

Lift the unit off the supports using the hoist. Apply approximately 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.”

5.

Carefully and gently lower the unit back onto the supports. Allow 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.

6.

Repeat steps 4 and 5 to be sure the dial indicator reading repeats with accuracy. Bearing end play should be as shown above.


Disassembly


Disassembly The following procedure is for complete disassembly of the unit. Prior to this procedure, the power take-off should be removed from the engine. Qualified personnel should do the work 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 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 in the Description and Specifications section, the exploded views in the Illustration section and Engineering Drawings near the back of this manual. 1.

Loosen and remove the belts and remove all attached parts from the output end of the power take-off.

2.

Remove the hex nut and hex-head capscrew securing the hand lever to the operating shaft.

3.

If used, loosen the support plate from the base mounting.

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

Remove hex head capscrews (65) and washers (66) (config. I only) and remove the seal plate (64) from the sheave housing (60).

5.

Remove the external snapring (73) (config. H only).

6.

Remove the hex head capscrews (48) and remove the sheave housing. Bearing (41) will also be removed with the sheave housing.

7.

Remove the belts.

All Configurations: 8.

Attach lifting equipment to the power take-off and take out the slack just enough to begin to support the weight of the pto. Do not apply too much 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 and resting on a secure bed.

96


Disassembly


9.

Remove the (twelve or sixteen) hex-head capscrews securing the power 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 as pusher screws in the two tapped holes provided in the housing flange. Use the pusher screws to separate the pto from the engine flywheel housing. Remove the power take-off from the engine.

10.

Remove the eight hex-head capscrews securing the drive ring to the engine flywheel.

11.

Support the power take-off on a bench with the output shaft up. 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 Refer to the Twin Disc Power Take-Off Reference Listing in the Description and Specifications section, the exploded views in the Illustration section and Engineering Drawings near the back of this manual. 1.

Support the power take-off on a bench with the clutch end facing up. Use wooden blocks under the power take-off.

2.

If the pilot bearing (or pilot bearing inner race) remained on the shaft, remove it using a standard bearing puller.

3.

If the pilot bearing is a two-piece bearing, remove the bearing’s outer 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 the two hex- head capscrews and remove the instruction plate if they were not previously removed.

5.

Use a 15/16” wrench to remove the jam nut and lock washer from the hose fitting located on the side of the power take-off housing. Push the fitting and hose into the power take-off housing.

6.

Straighten the bent portion of the hub nut lock washer. Use a 4” wrench or socket to remove the hub nut from the clutch shaft. Remove the hub nut lock washer.

7.

Use a gear puller with threaded legs for 1/2”-13 UNC tapped holes 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 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 Description and Specifications section, the exploded views in the Illustration section and Engineering Drawings near the back of this manual.

All 14 inch model clutches 1.

Set the clutch assembly on a bench with the throwout collar facing up. Disengage the clutch.

2.

Remove the grease fitting (23) from the hose fitting (20). Remove the hose (19) and hose fitting (18) from the trunnion of the collar assembly.

3.

Remove the four cotter pins (17) from the four clevis pins (16) securing the sliding sleeve to the links (15).

4.

Remove the sleeve and collar assembly from the links. Note: Models SPE114, SPE214 and SPE314, such as SP211P003, do not use a release collar assembly.

Bronze Collar Disassembly 5.

Remove two hex huts and two hex head bolts to remove the throwout collar halves and shims from the sliding sleeve.

Ball Bearing Collar Disassembly 6.

Remove the internal snap ring (31) from the sleeve side of the collar (28) and let it hang on the sliding sleeve.

7.

Tap the collar from the release bearing (30).

8.

Remove the external snap ring (29) from the sliding sleeve.

9.

Press the sleeve from the bearing in a press or pull the bearing from the sleeve.

10.

Remove the snap ring (29) from the sleeve.


99

Disassembly


All 14 inch model clutches 11.

Pull the adjusting lock pin (25), compressing the lock pin spring (24), and unscrew the adjusting ring (26) from the hub-and-back plate assembly. Remove the adjusting lock pin and spring from the adjusting ring.

12.

Straighten and remove the four cotter pins (13) and the four clevis pins (14) to disconnect the eight links (15) from the four levers (9).

13.

Straighten and remove the four cotter pins (12), four washers (10) and four clevis pins (11) that secure the levers to the pressure plate (8). Remove four levers from the pressure plate.

14.

Remove the pressure plate (8) and friction plate (6) from the hub-andback plate (4).

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

100

Remove the remaining friction plate(s) (6) and center plate(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 section of this manual. Refer to the Twin Disc Power Take-Off Reference Listing in the Description and Specifications section to determine which configuration is used in your PTO.

SPE114, SPE214 and SPE314 Series only: (SP114, SP214, SP314, SP314SB, RFD214 and RFD314 Series skip to step 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)

Set Screw (91)

Roller Operating Shaft (90) (55)

Key (56)

Figure 26. Illustration - SPE Release Mechanism Components 1.

Remove the two hex nuts (93) from the Camrols (92) and remove the Camrols from the throwout yoke (54).

2.

Remove the external snap ring (79) from the roller pin (81) and remove the roller pin, roller (84) and spring (81) from the neutral lock arm (80).

3.

Remove the retaining ring (83) from the headed pin (89) and remove the headed pin and roller (84) from the roller pin (82).


101

Disassembly


4.

Remove two hex head capscrews (85) from the locator detent (88) and remove the detent from the clutch housing (44).

All SP114, SPE114, SP211, SPE214, SP314, SPE314, SP314SB, RFD214 and RFD314 Series 5.

Loosen the set screw (77) that secures the stop collar (76) (if used) on the operating shaft (55) and remove the stop collar.

6.

Remove the hex-head capscrew from the throwout yoke (54). Tap one 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 the two grease fittings (57) from the outside of the housing near the operating shaft holes only if replacement of the parts is necessary.

Proceed to Clutch Shaft and Housing Disassembly: Ten main bearing configurations are illustrated. Refer to the Twin Disc Power 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 views in the Illustrations section of this manual and the main bearing housing configuration below.


Bearing Retainer (38)

Washer (36)

Retainer Clip (37)

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

Plug (43)

Housing (44)

Bearing Cup (42)

Fitting (57)

Figure 27. Illustration - Configuration A 1.

Support the pto on the bench with the input end up. Remove the hex head capscrew (35), lock washer (36) and the retainer clip (37) so the bearing retainer (38) may be rotated.

2.

Rotate the bearing retainer counter-clockwise to remove it.

3.

Lift the clutch shaft (33) with the two bearing cones (40 & 41) from the housing. The forward bearing cup (39) will come out with the shaft and bearing cones.

4.

Use an arbor press to remove the bearing cones from the clutch shaft. The bearing cones remove in opposite directions from the shaft shoulder.


103

Disassembly

104


5.

Remove the rear bearing cup (42) from the housing by removing the 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.

Remove the grease fitting (51) from the housing.


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 Fitting (44) (51)

Fitting (50)

Fittings (57)

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

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

Bearing Cup (42)

Figure 28. Illustration - Configuration B 1.

Support the pto on the bench with the output end up. There should 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.

Rotate the bearing retainer counter-clockwise to remove it.

3.

Lift the clutch shaft (33) with the two bearing cones (40 & 41) and the rear bearing cup (42) from the housing. The inner race of the front bearing (43) will be removed with the shaft and bearing cones.

4.

Use a split-type bearing puller or arbor press to remove the inner race of the front bearing (43) from the clutch shaft.

5.

Use an arbor press to remove the bearing cones from the clutch shaft. The bearing cones remove in opposite directions from the shaft shoulder.

6.

Turn the housing over on the bench and securely support it with the input end up. Remove the hex head capscrews (35) and bearing retainer (38).


105

Disassembly

106


7.

The outer race of the front bearing (43) should easily slide out of the housing bore. If not, tap out from inside the housing.

8.

Remove the forward bearing cup (39) from the housing by tapping the race from the bore from the inside of the housing toward the output end.

9.

Remove the grease fittings (50 & 51) from the housing.


Disassembly


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

Housing Hex Head Washer Capscrew (36) (44) (35)

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

Fitting (57)

Retainer Bearing Carrier Clip (47) (37)

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

Turn the power take-off housing with attached parts over on the bench. Support the housing so the output end of the clutch shaft faces up and is free to rotate. There should be a clearance below the input end of the clutch shaft.

2.

Remove hex head capscrews (48) and remove the support plate if used.

3.

Lift the clutch shaft (33) and bearing carrier (47) unit from the clutch housing (44).

4.

Secure the bearing carrier with attached parts in a large vise with protective jaws, with the input end of the shaft facing up, gripping the rear cast section of the bearing carrier in the vise.

5.

Remove the hex head capscrew (35), washer (36) and retainer clip (37).

6.

Remove the bearing retainer (38) be rotating it counterclockwise.

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

Remove the o-ring seal (78) from the O.D. of the bearing retainer.

8.

Tap the oil seal (68) out of the bearing retainer.

Configurations C & D 9.

Lift the clutch shaft with bearing cup (39) and bearing cones (40 & 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 arbor press or bearing puller to remove the bearing cones from the clutch shaft only if replacement is necessary. The bearing cones remove in opposite directions from the shoulder machined on the clutch shaft.


To remove the two wear sleeves, use a split-type bearing puller. Note: Remove the wear sleeves only if they must be replaced.

108


Disassembly



Remove the rear bearing cup from the bearing carrier by removing the two plugs (52) from the bearing carrier and tapping the bearing cup (42) from the bearing carrier through the holes using a blunt punch. Remove the race only if replacement is necessary.

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

Knock the oil seal (70) out of the bearing carrier (47).

14.

Remove the breather (72) and the two oil fill check plugs (94) from the sides of the bearing carrier.

Configuration C only: 15.

Remove the grease fittings (51) from the bearing carrier.


109

Disassembly


Clutch Shaft and Housing Disassembly - Configuration E Refer to the BOM and exploded views in the Illustrations section 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 hex head capscrews (48) and washers (49) and remove the support plate if used.

3.

Lift the clutch shaft (33) and bearing carrier (47) unit from the clutch housing (44). The main bearing (40) will be removed with the shaft and bearing carrier.

4.



Disassembly


5.

Remove the internal snapring (75) from the bearing carrier.

6.

Remove the shaft and bearing from the bearing carrier (47). If necessary, the bearing carrier may be gently tapped off the bearing.

7.

Remove the two external snap rings (58 & 59).

8.

Use an arbor press to press the shaft out of the bearing (40).

9.

Remove the grease fitting (51) from the bearing carrier.


111

Disassembly


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


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 Retainer (40) (68) (38)



Fitting (51)

Oil Seal (70)

O-Ring (78) Fitting (57)

Washer (49)


Figure 33. Illustration - Configuration G

112


Disassembly


1.


2.

Remove hex head capscrews (48) and washers (49) and remove the support plate if used.

3.

Lift the clutch shaft (33) and bearing carrier (47) unit from the clutch housing (44).

4.


5.

Remove the internal snap ring (75) from the bearing carrier (47).

6.

Remove the bearing retainer (38).

7.

Lift the clutch shaft with the two bearings (40 & 41) from the bearing carrier.

8.

Use an arbor press to remove the bearings from the clutch shaft. The bearings remove in opposite directions from the shaft shoulder.

9.

Remove the fitting (51) from the bearing retainer.

Configuration G only: 10.

Remove the o-ring (78) from the bearing retainer.

11.

Tap the front oil seal (68) out of the bearing retainer.

12.

Remove the rear oil seal (70) from the bearing carrier.


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) Plug (63) Hex Head Capscrew (35)

Fitting (57)

Dowel (61)



Sheave Housing (60)

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



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 (66) Capscrew Retainer (65) (64)

Figure 35. Illustration - Configuration I

114


Disassembly


1.

Remove the hex head capscrews and remove the support plate.

2.

Securely support the pto so the output end of the clutch shaft faces up and is free to rotate. There should be a clearance below the input end of the clutch shaft.

3.

Remove the hex head capscrews (48) that secure the sheave housing (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 the hex head capscrews (65) 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.

Remove the shim (95) from on top of the bearing.

Configurations H & I: 7.

Remove the outer race of bearing (41) from the sheave housing. If necessary, remove plugs (63) and tap the race out using a punch through the plug holes.

8.

Remove the fitting (50) from the bearing retainer.

9.

Remove the hex head capscrews (35) and (Configuration I only) washers (36), and remove the front bearing retainer (38) from the clutch housing (44).

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

Lift the clutch shaft (33) with the inner races of the front and rear bearings (40 & 41) and external snap rings (73 & 75) from the clutch housing.

11.

Remove the rear external snapring (73) from the output end of the shaft.

12.

Using a split-type bearing puller, remove the inner race of the rear bearing (41) from the shaft.

13.

Remove the front external snap ring (75) from the shaft


115

Disassembly


14.

Using a split-type bearing puller, remove the inner race of the front bearing (40) from the shaft.

Configuration I only:

116

15.

Lift the clutch shaft (33) with the inner races of the front and rear bearings (40 & 41) and the wear sleeve (67) from the clutch housing.

16.

Using a split-type bearing puller, remove the inner race of the rear bearing (41) from the shaft.

17.

Using a split-type bearing puller, remove the inner race of the front bearing (40) from the shaft.

18.

Remove the wear sleeve (67) only if it must be replaced. Use a splittype bearing puller to remove the wear sleeve.


Disassembly


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

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


Housing (44)

Fitting (51)

External Bearing (40) Snap RIng (58)

Figure 36. Illustration - Configuration J 1.

Support the pto on the bench with the input end up. Remove the hex head capscrew (35), lock washer (36) and the retainer clip (37) so the bearing retainer (38) may be rotated.

2.

Rotate the bearing retainer (35) counter-clockwise to remove it.

3.

Lift the clutch shaft (33) with the bearing (40) from the housing.

4.

Remove the external snapring (58).

5.

Use an arbor press to remove the bearing from the clutch shaft. Note: The external snapring is supplied with the new bearing.

6.

Remove the grease fitting (51) from the housing.


117

Disassembly


NOTES

118


Cleaning and Inspection



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

Bearings 1.

Thoroughly wash bearings in clean solvent if they have been in service. 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.

Inspect bearings for roughness of rotation. Replace the bearing if roughness is found.

3.

Inspect bearings for corrosion, scored, scratched, cracked, pitted 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 grit in bearings are often responsible for bearing failure. 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 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.

Replace cast parts or housings that are cracked.

6.

Inspect bearing bores for grooved, burred or galled conditions 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. Bore diameters must not exceed the maximum dimension shown in Wear Limits the 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.

Inspect bores for wear, grooves, scratches and dirt. Remove burrs and scratches with crocus cloth or a soft stone. Replace parts that are deeply grooved or scratched.

8.

Inspect oil and grease passages for obstructions. If an obstruction 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.

Inspect machined surfaces for burrs, scratches, nicks and foreign matter. If such defects cannot be removed with crocus cloth or a soft stone, replace the part.

10.

Inspect bearing journals on the shaft for grooved, burred or galled 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. Bearing journal diameters must not be less than the dimensions shown in Wear Limits the Description and Specifications section of this manual.

11.

Inspect the pilot bearing journal on the clutch shaft. If it is worn in any way, or if it shows signs that the pilot bearing has been turning on the journal, replace the 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 seal journal surfaces on the shaft. Look especially for scratches or nicks that extend above the shaft surface. If they cannot be removed using a fine crocus cloth, replace the part. Seal journal diameters must not be less than the dimensions shown in Wear Limits the Description and Specifications section of this manual.

13.

Inspect seal lip contact surfaces on wear sleeves and other surfaces. 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.

Inspect threaded openings for damaged threads. Chase damaged threads with a tap of the correct size.

15.

Be sure the snap ring grooves have straight sides, especially if 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 personnel should do the work 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 assembly steps. Note: Ten main bearing configurations are illustrated. Refer to the Twin Disc Power Take-Off Reference Listing in 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 in the Description 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 Type Throwout Collar skip to step 3.) 1.

Lubricate the shoulder of the sliding sleeve (27) with No. 30 engine 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 2 hex nuts on the capscrews. Torque the capscrews to the proper specifications given in Torque Values for 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 to be sure it turns freely on the sliding sleeve. (Proceed at step 8.)


Assembly


Ball Bearing Type Throwout Collar 3.

Place the sliding sleeve (27) on the bed of a press with the bearing end up. Place the external snap ring (31) on the sleeve before the bearing is installed.

Figure 42. Assembly of Ball Bearing Type Throwout Collar 4.

Press the ball bearing (30) on the sleeve. Press tight to stop against the shoulder. Note: Pack the bearing with grease before installing it on the collar. Note: Apply force only against the inner race of the bearing. Pressing against the outer race or contact with the balls will damage the bearing, leading to premature failure.

5.

Install the external snap ring (29) to secure the bearing.

6.

Install the throwout collar (28) over the bearing. Seat the collar tight 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 the sliding sleeve assembly over on the bed of the press. Install the internal snap ring (31) in the collar.


125

Assembly


Assemble the plate stack 8.

Set the hub and back plate (4) on a bench with the threaded and splined section facing up.

9.

Install a friction plate (6) on the hub-and-backplate.

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

SP214, SPE214, SP314, SPE314, SP314SB, RFD214 and RFD314 Series clutches only: (SP114 and SPE114 Series Clutches, skip to step 14.) 10.

Install a center plate (7) so it rests flat on the friction plate, meshing the splines of the center plate and hub-and-backplate.

11.

Install a second friction plate (6) on the center plate.

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

126

12.

Install a second center plate (7) so it rests flat on the second friction plate, meshing the splines of the center plate and hub-and-backplate.

13.

Install a third friction plate on the second center plate assembly.


Assembly


SP114, SPE114, SP214, SPE214, SP314, SPE314, SP314SB, RFD214 and RFD314 Series clutches: 14.

Install the pressure plate (8) on the top friction plate, meshing the splines of the center plate and hub-and-backplate.

15.

Install the adjusting lock pin spring (24) into the pocket in the pressure plate and install the adjusting lock pin (25) on the spring.

Figure 44. Illustration - Levers, Links, Sleeve, Throwout Collar 16.

Push down on the pin, compressing the spring while screwing the adjusting yoke (26) partially onto the threaded part of the hub-and-back plate.

17.

Place the levers (9) between the lugs of the pressure plate and secure to the pressure plate with four clevis pins (11). Note: Hook each lever under the edge of the adjusting yoke while aligning the clevis pin hole with the holes in the pressure plate lugs.


127

Assembly


18.

Place a washer (10) on each clevis pin and install four cotter pins (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 eight lever links (15) one on each side of each of the four clutch levers (9). Secure with four clevis pins (14) and four cotter pins (13).

20.

Place the pre-assembled sliding sleeve (27) on the adjusting yoke, aligning the four lugs between the four pairs of lever links.

21.

Attach the links to the sliding sleeve with four clevis pins (16) and four cotter pins (17).

22.

Install the hose fitting (18) in the collar trunnion, and attach the flexible hose (19), hose fitting (20) and lubrication fitting (23).


Assembly


Center the clutch plates 23.

Visually center the friction plates (6) on the clutch and align the teeth. 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, 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 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 are illustrated. Refer to the Twin Disc Power 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 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 Description and Specifications section, the exploded views in the Illustrations section and Engineering Drawings near the back of this manual.



Washer (36)

Retainer Clip (37)

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

Plug (43)

Bearing Cup (42)

Housing (44)

Fitting (57)

Figure 47. Illustration - Configuration A

Install main bearings on the clutch shaft 1.

Clean the tapered bearing cones (40 & 41) and clutch shaft (33) with isopropyl solvent to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

2.

Use an arbor press to install the two bearing cones on the clutch shaft. 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. 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.

Press Ram Flat Plate (tool) Press Tube

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

Bearing Cone (41)

Output end of Clutch Shaft (33)

Figure 48. Install bearing cones on the shaft Note: An alternative method to install the bearing cones 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. 3.

After the bearings return to room temperature, coat the bearing rollers and both bearing cups with a light film of clean No. 30 engine oil.

Clutch housing 4.

Set the clutch housing (44) on the bed of a press with the input end 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.

Install 2 lubrication fittings (57) if they were removed.

6.

Use a round steel plate slightly smaller in diameter than the outer 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: Installation 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)

Install the clutch shaft and bearings into the housing. 7.

Carefully install shaft and bearings in the housing. The output end of the shaft must enter the housing first. Note: DO NOT pre-grease the bearings prior to installation into the housing.

8.

Install the front bearing cup (39) in the bore on top of the upper bearing cone. Press it tight against the cone.

9.

Install the bearing retainer (38) in the housing. Thread the bearing retainer 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 is for assembly purposes only. Final bearing end play must be adjusted as described below in “(Final setting) Measure and set bearing end play.” 10.

Tighten the bearing retainer until 6.8 Nm. (60 in.-lbs.) of 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 cones in the bearing cups and creates a “zero” clearance.

11.

Note the position of any one of the notches in the bearing retainer relative 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 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 - 4 3/4 notches 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.


135

Assembly


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


13.


14.


15.



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.


17.

Repeat steps 15 and 16 to be sure the dial indicator reading repeats with accuracy. Adjust the bearing retainer as necessary to obtain 0.152 - 0.254 mm. (0.006 - 0.010 in.) bearing end play. (See note below.)

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. . Once the bearing end play adjustment is completed, match-mark the bearing retainer and bearing housing so the bearing retainer may be removed and reinstalled in the same exact position.

19.

After match-marking the bearing retainer and bearing housing, remove 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 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.

Reinstall the shaft with bearings, front bearing cup and bearing retainer. Position the bearing retainer exactly as it was prior to removal. Realign the match-marks.

22.

Install the retainer clip (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 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 Refer to the Twin Disc Power Take-Off Reference Listing in the Description and Specifications section, the exploded views in the Illustrations section and Engineering Drawings near the back of this manual.

Hex Head Retainer Capscrew (38) (35)

Bearing (43)

Housing Fitting (44) (51)

Fitting (50)

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

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

Fittings (57)

Bearing Cup (42)

Figure 52. Illustration - Configuration B

Install main bearings on the clutch shaft 1.

Clean the tapered bearing cones (40 & 41) and clutch shaft with isopropyl solvent to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

2.

Use an arbor press to install the two bearing cones on the clutch shaft. 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. 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.

Bearing Cone (41)


Figure 53. Install bearing cones on the shaft Note: An alternative method to install the bearing cones 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. 3.

After the bearings return to room temperature, coat the bearing rollers and both bearing cups with a light film of clean No. 30 engine oil.

4.

Clean the inner race of front bearing (43) and clutch shaft with isopropyl solvent to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

5.

Use an arbor press to install the race on the clutch shaft. Install the race from the input end, with the taper toward the front end of the shaft and the back face (no taper) 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.


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.

Clutch housing 6.

Set the clutch housing (44) on the bed of a press with the output end of the housing facing up.

7.

Install 2 plugs (57) if they were removed.

8.

Use a round steel plate slightly smaller in diameter than the outer 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: Installation 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


Install the clutch shaft and bearing into the housing. 9.

Carefully install shaft and bearings in the housing. The input end of the shaft must enter the housing first. Note: DO NOT pre-grease the bearings prior to installation into the housing.

10.

Install the rear bearing cup (42) in the bore on top of the upper bearing cone. Press it tight against the cone.

11.

Install the rear bearing retainer (64) in the housing. Thread the bearing retainer tight against the bearing cup. Note: The notches must be up.

(Preliminary setting) Measure and set bearing end play.


Tighten the bearing retainer (64) until 6.8 Nm. (60 in.-lbs.) of 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 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 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 housing over with the input end up. Install the outer race of front bearing (43).

15.

Install front bearing retainer (38) tight against the bearing race.

16.

Install four hex head capscrews (35) to secure the bearing retainer to the housing. Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section.


Assembly




18.


19.


20.

Lift the unit off the supports using the hoist. Apply approximately 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


Figure 56. Measuring and setting bearing end play 21.



143

Assembly


22.

Repeat steps 20 and 21 to be sure the dial indicator reading repeats with accuracy. Adjust the bearing retainer as necessary to obtain 0.152 - 0.254 mm. (0.006 - 0.010 in.) bearing 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 - 0.012 in.) bearing end play.

23.

Once the bearing end play adjustment is completed, match-mark the bearing retainer and bearing housing so the bearing retainer may be removed and reinstalled in the same exact position.

24.

After match-marking the bearing retainer and bearing housing, remove the bearing retainer (64) and rear bearing cup (42).

25.

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 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.

26.

Reinstall the shaft with bearings, front bearing cup and bearing retainer. Position the bearing retainer exactly as it was prior to removal. Realign the match-marks.

27.

Install the retainer clip (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 in the Description and Specifications section, the exploded views in the Illustrations section and Engineering Drawings near the back of this manual.

Housing Hex Head Washer Capscrew (36) (44) (35)

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

Fitting (57)

Retainer Bearing Carrier Clip (47) (37)

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 Cone Retainer Cup Cone Cup (41) (38) (39) (40) (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 the tapered bearing cones (40 & 41) and clutch shaft (48) with isopropyl solvent to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

2.

Use an arbor press to install the two bearing cones on the clutch shaft. 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 the end of the shaft 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 method to install the bearing cones 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 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



Coat the I.D. of the rear wear sleeve (69) with an anaerobic sealant 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 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 shaft over with the input end up. Install the front wear sleeve (67) as described above for the rear wear sleeve.

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

Set the bearing carrier (47) on the bed of a press with the output end of the housing facing up.

6.

Rest the rear oil seal (70) in the housing bore; the seal lip should be down, extending toward the front end of the bearing 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 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.

Install the two oil level check plugs (94) and the bottom pipe plug (71) in the bearing carrier.


147

Assembly



Support the bearing carrier (47) on the bench so the input end is 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 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 bearing rollers and both bearing cups with a light film of clean No. 30 engine oil.


Pre-lubricate the wear sleeve surfaces with clean No. 30 engine oil in preparation for installation of the shaft into the bearing retainer.

Install the clutch shaft and bearing cones into the bearing carrier.

148

11.

Place the bearing carrier (47) in a large bench vise with protective jaws or securely support it on a bench with the input end up. There must 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.

Install the forward bearing cup (39) into the bearing carrier.


Assembly


13.

Install the bearing retainer (38) over the clutch shaft, resting against 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


Tighten the bearing retainer until 6.8 Nm. (60 in.-lbs.) of 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 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 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 - 4 3/4 notches 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.

150


Assembly




17.


18.


19.





Bearing Retainer

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

151

Assembly


20.


21.

Repeat steps 19 and 20 to be sure the dial indicator reading repeats with accuracy. Adjust the bearing retainer as necessary to obtain 0.152 - 0.254 mm. (0.006 - 0.010 in.) bearing 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 - 0.012 in.) bearing end play.

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

Once the bearing end play adjustment is completed, match-mark the bearing retainer and bearing housing so the bearing retainer may be removed and reinstalled in the same exact position.

23.

After match-marking the bearing retainer and bearing housing, remove the bearing retainer (38) and front bearing cup (39).

24.

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 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.

25.

Reinstall the shaft with bearings, front bearing cup and bearing retainer. Position the bearing retainer exactly 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 (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.

Install plugs (52) in the output end of the bearing carrier.

Install the bearing carrier unit on the clutch housing. 28.


29.

Set the clutch housing (44) on a work bench, securely supported with wooden blocks, with the input end of the housing facing down. There should be sufficient clearance below the housing to allow for installation of the clutch shaft.

30.

Lift the bearing carrier and shaft using a hoist securely attached to it. Carefully lower the bearing carrier and shaft onto the clutch housing. Disconnect the hoist. Position the carrier so the grease fitting (51) (or breather if Configuration D) will be up when the clutch housing is in its final position on the engine.

31.

Attach the support plate if used, and secure the bearing carrier to 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 in the Description and Specifications 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 main bearing (40) and clutch shaft (33) with isopropyl solvent to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

154

2.

Support the shaft with the input end up. Install the lower snap ring (59) in the lower groove.

3.

Use an arbor press to install the bearing (40) on the clutch shaft (33).


Assembly


Install the bearing on the clutch shaft, pressing it tight 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 to the snap ring and just slightly larger in inside diameter than the bearing ’s inside 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 method to install the 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.



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.

Install the upper snap ring (58) in the upper groove.

Install the clutch shaft and bearings into the bearing carrier. 5.

Place the bearing carrier (47) in a large bench vise with protective jaws or securely support it on a bench with the input end up. There must be sufficient clearance below the carrier to install the shaft. Note: Pre-grease the bearing prior to assembly.

6.

Carefully install shaft and bearing in the bearing carrier. The output end of the shaft must enter the carrier first.

7.

Install the internal snap ring (75) in the bearing carrier.

Install the bearing carrier unit on the clutch housing.

156

8.


9.

Install two grease fittings (57) if they were removed.

10.

Lift the bearing carrier and shaft using a hoist securely attached to it. Carefully lower the bearing carrier and shaft onto the clutch housing. Disconnect the hoist. Position the carrier so the grease fitting (51) will be up when the clutch housing is in its final position on the engine.

11.

Attach the support plate if used, and secure the bearing carrier to 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 Twin Disc Power Take-Off Reference Listing in the Description and Specifications section, the exploded views in the Illustrations section and Engineering Drawings near the back of this manual.

Bearing (41)

Housing (44) Bearing Retainer (38)

Bearing (40)


Fitting (57)

Fitting (51)


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 the front and rear tapered bearings (40 & 41) and clutch shaft (33) with isopropyl solvent to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

2.

Use an arbor press to install the two bearings on the clutch shaft. Install 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 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 method to install the 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


Flat Plate (tool) Press Tube


Bearing (41)



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

158


Assembly


Bearing Carrier Configuration G only: (Configuration F skip to step 6) 3.

Set the bearing carrier (47) on the bed of a press with the output end of the housing facing up.

4.

Rest the rear oil seal (70) in the housing bore; the seal lip should be down, extending toward the front end of the bearing 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 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 the bearings with a light film of clean No. 30 engine 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.

Install the clutch shaft and bearings into the bearing carrier. Configurations F & G: 7.

Place the bearing carrier (47) in a large bench vise with protective jaws or securely support it on a bench with the input end up. There must 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.

Install the shaft with the bearings in the bearing carrier. The lower bearing must seat securely in the bottom of the bore.


159

Assembly


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

Install the o-ring (78) in the groove on the O.D. of the bearing retainer (38). Coat the o-ring with a light film of clean No. 30 engine oil.

Configurations F & G: 10.

Install bearing retainer (38) in the bearing carrier (47) resting securely against the front bearing (40).

11.

Install the internal snap ring (75) in the groove of the bearing carrier. Be sure it is securely seated in the groove.

Install the bearing carrier unit on the clutch housing. 12.


13.

Lift the bearing carrier and shaft using a hoist securely attached 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.

Attach the support plate if used, and secure the bearing carrier to 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.



160


Assembly


Clutch Shaft and Housing Assembly - Configurations H & I Refer to the Twin Disc Power Take-Off Reference Listing in the Description and Specifications 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) Plug (63) Hex Head Capscrew (35)

Fitting (57)

Dowel (61)



Sheave Housing (60)

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



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 (66) Capscrew Retainer (65) (64)

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

161

Assembly


Clutch Shaft 1.

Clean the front and rear bearing inner races (40 & 41) and clutch shaft (33) with isopropyl solvent to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

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

Coat the I.D. of the wear sleeve (67) with an anaerobic sealant Twin Disc part number M2828. 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 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 alternative 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 arbor press to install the front bearing inner race (40) on the 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. Note: Special tools are not available from Twin Disc, Inc., but can be fabricated in any capable machine shop. Note: An alternative method to install the bearing race 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 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.


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. (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)

Install the external snap ring (75) in the shaft groove next to the front bearing (40). Be sure the snap ring is correctly seated in the groove.


Use an arbor press to install the inner race of rear bearing (41) on 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 to the shoulder and just slightly larger in inside diameter than the race’s inside diameter. Note: Special tools are not available from Twin Disc, Inc., but can be fabricated in any capable machine shop. Note: An alternative method to install the bearing race 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 race cool to room temperature after installation. Continue to apply force as they cool ensuring that they remain seated.




Bearing Inner Race (41)


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

164


Assembly


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

Install the external snap ring (73) in the shaft groove next to the rear bearing (41). Be sure the snap ring is correctly seated in the groove.

Install the clutch shaft and bearings into the main housing. Configurations H & I: 7.

Support the housing (44) with the output end up. There must be sufficient 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 grease to the circumferential cavities in the housing (44) 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.

Carefully install the outer race of the front bearing (40) in the housing bore.


165

Assembly


11.

Carefully install shaft in the housing.

Use extra care to prevent damage to the bearing rollers or races during shaft installation. Damage will cause premature failure. 12.

Install the bearing retainer (38) on the housing and secure with six hex head capscrews (35) and (Configuration I only) six washers (36). Torque the capscrews to 80 Nm (59 lb.-ft.).

13.


14.

Determine the position the sheave housing will be in when the pto 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 grease to the circumferential cavities in the sheave housing (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 sheave housing (60), locating it on the dowel pins. Secure it with the (six or eight) hex head capscrews (48) and (Configuration I only) eight washers (49).


Assembly


17.

Install the outer race of the rear bearing (41) in the sheave housing. 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.

Install the fittings (63) in the sheave housing if they were removed.

20.

Install the bearing retainer (64) on the sheave housing and secure with three hex head capscrews (65) and (Configuration I only) three washers (66). Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section.

Measure the bearing end play (shaft movement) 21.

Insure that the proper amount of bearing end play exists. Proceed as instructed in Checking Bearing End Play - Model SB314SB as shown in the Maintenance section of this manual

Configuration I only: 22.

If the end play is not as specified, remove the hex head capscrews and washers, and remove the bearing retainer (64).

23.

Install or remove shims (95) to obtain the proper end play. a.

Record the end play reading from step 21.

b.

Subtract 0.055 mm (0.002 inches) from the reading.

c.

The difference between the two figures is the thickness of shims that must be added or removed. End Play Reading - 0.055 mm (0.002 inches) =Shim thickness

24.

Repeat steps 21 through 23 until the end play measurement is as specified.



167

Assembly


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

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

Housing (44)


Fitting (51)

External Bearing (40) Snap RIng (58)

Figure 76. Illustration - Configuration J

Clutch shaft 1.

Clean the main bearing (40) and clutch shaft (33) with isopropyl solvent to remove any oil or grease residue. Note: Do not use any oil or paraffin based solvents.

2.

Support the shaft with the input end up. Use an arbor press to install the bearing (40) on the clutch shaft (33). Note: The external snapring of the bearing must be up, toward 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 slightly larger in inside diameter than the bearing ’s inside diameter. (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. Note: An alternative method to install the 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


Press Tube

External Snapring of Bearing must be up (toward input end of shaft).

Flat Plate (tool)

Bearing (40)

Input end of Clutch Shaft (33)


Figure 77. Install bearing on the shaft


169

Assembly


3.

Install the external snap ring (73) in the shaft groove next to the rear bearing (41). Be sure the snap ring is correctly seated in the groove.

Install the clutch shaft and bearings into the main housing. 4.


5.

Support the housing (44) with the input end up. There must be sufficient clearance below the housing to install the shaft.

6.

Carefully install shaft and bearing in the housing. The output end of the shaft must enter the housing first. Note: Insure that the snapring of the bearing is tight against the housing.

7.

Install the bearing retainer (38) in the housing. Thread the bearing retainer tight against the bearing. Note: The notches must be up.

8.

Tighten the bearing retainer until 6.8 Nm. (60 in.-lbs.) of torque is required to rotate the shaft. Note: Do not overtighten! Damage may occur to the bearings or bearing retainer.

9.

Note the position of any one of the notches in the bearing retainer relative 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 (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, Twin Disc Power Take-Off Reference Listing in the Description and Specifications section, the exploded views in the Illustrations section and Engineering Drawings near the back of this manual.

SPE114, SPE214, and SPE314 Series only: (SPE114, SP214, SP314, SP314SB, RFD214 and RFD314 Series, skip to step 2.) 1.

Install the two Camrols (92) into the throwout yoke (54). Position the 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 and RFD314 Series: 2.

Position the clutch housing on a bench with the input end facing 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.

Install one woodruff key (56) in the operating shaft.

Clutch Shaft (33) Note position of throwout fork (54)


Operating Shaft (55)

Figure 78. Install the throwout fork 4.

Push the operating shaft the other way to expose the other key slot in the center of the fork.

5.

Install the other woodruff key (56).


171

Assembly


6.

Center the operating fork so the hex head capscrews will enter 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. Note: Some units, such as in the SP314SB Series, use a stop 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 Install the clutch in the clutch housing. Refer to the Twin Disc Power Take-Off Reference Listing in the Description and Specifications section, the exploded views in the Illustrations section and Engineering Drawings near the back of this manual. 1.

Set up and support the main housing assembly (44) with attached parts 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.

Carefully place the clutch assembly over the clutch shaft while: A.

Aligning the trunnions on the collar with the throwout fork.

B.

Aligning the keyways in the hub-and-back plate with the keyway in the clutch shaft.

Partially install the hub key (29) in the keyway. Tap the hub-and-back 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 Key (29)

Clutch Rotate throwout fork to engage trunnion. Use several 4” x 4” blocks or other means of insuring the pto does not tip or fall over.

1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234

123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123 123

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 Power Take-off Service Manual #1022763

173

Assembly


4.

Drive the hub key (29) into position slightly below the surface of the huband-back plate (4). Note: Do not use excessive hammer force when installing the key.

5.

Install the hub nut lock washer (3) over the clutch shaft (33), locating its tab in the drilled hole on the hub-and-back plate (4). Install the hub nut (2) and tighten and torque to 40.7 Nm. (30 ft. -lb).

6.

Tighten the hub nut an additional 150 - 180 degrees clockwise, then bend a side of the hub nut lock washer up against a flat on the hub nut.

7.

Route the flexible hose assembly (19) clear of all moving parts and push the end hose fitting (20) through the hole in the clutch housing.

8.

Install the lock washer (21) and jam nut (22) to retain the end fitting (23) in the housing. Torque the capscrews to the proper specifications 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 the operating shaft so the throwout yoke (54) is not preloaded 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 on the shaft.

All Configurations: 10.

174

Install all remaining plugs and external components on the power takeoff.


Assembly


Center the clutch plates 11.

If not previously done, visually center the friction plates (6) on the clutch and align the teeth. 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, 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 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 according to Clutch Adjustment in the Maintenance 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.

Place the instruction cover plate (45) in position on the housing 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.

Place the bottom cover plate (62), if used, in position on the housing and secure with 2 hex-head cap screws 5/16” - 18 x 1/2” (74). Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section.

18.

Install the shaft key (34) and all parts previously removed from the output 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 illustrations 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, clevis (lever to pressure plate) 4 Pin, cotter (lever to pressure plate) 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 Ring, snap-internal 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 1 Bearing, cup-front 2 Bearing, cone-front (or bearing-qty. 1) 2 Bearing, cone-rear (or bearing-qty. 1) 2 Bearing, cup-rear 2 Bearing 1 Housing 1 Plate, instruction 1 Screw, machine 2 Carrier, bearing 1 Screw, hex-head 6

Item Description Qty. 49 Washer 6 50 Fitting 1 51 Fitting 1 52 Plug 2 or 3 53 Hand lever assembly 1 54 Throwout yoke 1 55 Shaft, operating 1 56 Key, woodruff 2 57 Fitting (or plug) 2 58 Snap Ring, external 1 59 Snap Ring, external 1 60 Sheave Housing 1 61 Dowel Pin 2 62 Plate, Bottom 1 63 Pipe Plug 2 64 Seal Plate (or rear bearing retainer) 1 65 Capscrew 3 66 Washer 3 67 Sleeve, wear-front 1 68 Seal, oil-front 1 69 Sleeve, wear-rear 1 70 Seal, oil-rear 1 71 Plug, pipe 1 72 Breather 1 73 Snap Ring, external 1 74 Capscrew 2 75 Snap ring, internal 1 76 Stop Collar 1 77 Screw 1 78 Seal, o-ring 1 79 Snap ring 1 80 Neutral Lock Arm 1 81 Spring, Compression 1 82 Roller Pin 1 83 Retaining ring 1 84 Roller Detent 1 85 Washer 1 86 Hex Head Capscrew 1 87 Hex Head Capscrew 1 88 Detent Locator 1 89 Clevis Pin 1 90 Stop, roller 2 91 Screw, set 2 92 Bearing, Camrol 2 93 Hex Nut 2 94 Plug, Oil Level Check 2 95 Shim AR 96 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 below. Note: All part numbers listed in the following engineering drawings are for reference only and illustrate most of the variations found in the SP114, SPE114, SP214, SPE214, SP314, SPE314, SP314SB, RFD214 and RFD314 Series PTOs. Please refer to your bill of material for part numbers specific to your model. Contact your Authorized Twin 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

56


TWIN DISC, INCORPORATED RACINE, WISCONSIN 262-638-4000/262-638-4482 WWW.TWINDISC.COM EC300 Marine Control System53403, ConfiU.S.A. guration/Troubleshooting Manual (FAX) #1020XXX

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