TIPS TIPS FOR TOP PERFORMANCE PER FORMANCE TRACKS The track system of your Crawler is the result of over 25 years of compact crawler experience. The track system is of an "unguided" design, but is extremely stable due to its double track chain design. design. A few rules rules are listed below below that that if followed followed will will give you you maximum maximum Track Track performance. 1.
Avoid Avoid overlo overload ading ing your your track track syste system m with with the ma mater teria iall you you are are work working ing in. Alway Always s work work in loose materials by clearing a "driving path" with the attachment (Blade, Bucket, etc.) you are using. This technique will allow a minimum of material to enter the track system.
2.
Avoid Avoid climbi climbing ng on a pile pile of loose loose ma mater teria iall and and count counterer-ro rotat tatin ing g you yourr tra tracks cks.. This This acti action on will "cork-screw" the Tracks into the pile and force unnecessarily large amounts of material into the Tracks. Tracks. The track system is designed to absorb a great deal of material, but the less you force it to "digest", the greater will be the Track's stability and overall life.
3.
Periodic Perio dicall ally, y, follow followin ing g the Tra Track ck Ten Tensio sionin ning g instru instructi ctions ons in in your your Operat Operator' or's/T s/Tec echn hnica icall Manual, check your Track tension by checking the length of the #234 Track Tension
Operator’s / Technical Manual This Operator’s / Technical Man ual is sold strictly for non -commercial purposes . Its sale in no way licenses any individual or company to reproduce the MD750 in any form for resale. To do so will constitute a direct violation of all patents applicable at that time. To reproduce this Operator’s / Technical Manual, in whol e or part, wi ll cons titute direct violation of our copyright. C . F. STRUCK CORP.
TO THE OPERATOR............. OPERATOR........................... ............................. ............................. ................. ... 1
FUELS and LUBRICANTS ..................... ............................... ..................... ..................10 .......10
Operator’s / Technical Manual This Operator’s / Technical Man ual is sold strictly for non -commercial purposes . Its sale in no way licenses any individual or company to reproduce the MD750 in any form for resale. To do so will constitute a direct violation of all patents applicable at that time. To reproduce this Operator’s / Technical Manual, in whol e or part, wi ll cons titute direct violation of our copyright. C . F. STRUCK CORP.
TO THE OPERATOR............. OPERATOR........................... ............................. ............................. ................. ... 1
FUELS and LUBRICANTS ..................... ............................... ..................... ..................10 .......10
TO THE OPERATOR Congratulations… on your purchase of a quality-built, American made compact Crawler. We are confident that that the dependability and economical performance of your Struck. Crawler will prove that you made a wise choice. The purpose of this Manual is to acquaint you with the MD750 MD750 Crawler Crawler.. The Manual Manual explain explains s how to operate and service your Crawler, and how to maintain its high operating efficiency. efficiency. Instructions are given clearly, with the intention of making these operations as easy as possible. Keep this Manual in a convenient place for quick and easy reference. Use it as a guide whenever questions arise. You have purchased a dependable, sturdy Crawler, but only by operating and caring for it properly can you expect to receive the service and long life for which it was designed.
RECOGNIZE SAFETY INFORMATION This is the safety-alert symbol. When you see this symbol on your Crawler or in this Manual, be alert to the potential for personal injury.
UNDERSTAN UNDE RSTAND D SIGNAL WORDS WORDS A signal signal wor word d -- DANGE DANGER, R, W WARN ARNING ING,, or or CAUTION -- is used with the safety-alert symbol. DANGER identifies the most serious hazards. Safety labels with the signal word DANGER or WARNING are typically near specific hazards. General precautions are listed on CAUTION safety labels. CAUTION also calls calls attention attention to
SAFETY RULES Reports on accidents show that careless use of machinery causes a high percentage of accidents. You can avoid many accidents by following the safety rules on these pages. Study these rules carefully and enforce them on the job.
SAFETY BEFORE STARTING OR OPERATION The Crawler should be operated only by persons approved to do so. Clothing worn by the operator should be fairly tight and belted.
Do not drive too close to the edge of a ditch or excavation. Watch for overhead wires. Do not touch wires with any part of the Crawler or its Attachments. Do not leave your Crawler unattended with the Engine running. Keep work areas as level as possible. When loading logs with the Log Forks, make sure the logs are balanced. When you drive out of a ditch or excavation, or up a steep hillside, or when Crawler is hitched to a heavy load, engage Track Drive Controls slowly. If the front of the Crawler comes off the ground, release Track Controls immediately . Do not use the Crawler as a battering ram.
Fasten a first aid kit to the Crawler.
Do not guide cable onto Winch Drum with your hands.
Fasten a fire extinguisher to the Crawler. Keep the extinguisher fully charged. Learn to use it
When you drive the Crawler on a road, use the correct lights to warn operators of other vehicles.
Do not work under Crawler or raised equipment unless it is correctly supported...contact factory for recommended procedures. Before you work on the Engine or electrical system, disconnect the battery's "ground" ( - ) terminal first! When work is finished, connect battery's "ground" terminal ( - ) last. When driving connecting pins (Spring Pins), wear goggles or safety glasses. Do not run Engine while working on the Crawler. Be careful when handling any type of fuel. Do not smoke while filling the fuel tank or working on the fuel system. Check for faulty wiring or loose connections. Do not lubricate or work on the Crawler while it is moving. When you work near the Track Springs, use extreme care . Do not disassemble parts unless you know the correct procedure and have correct tools.
Never use an open flame as light anywhere on or around the equipment. When preparing Engine for storage, remember that inhibitor is volatile and therefore dangerous. Seal and tape openings after adding the inhibitor. Keep container tightly closed when not in use. Inspect electrical wiring for worn or frayed insulation. Install new wiring if wires are damaged. Temperature in Engine compartment may go up immediately after you stop the Engine. Be on guard for fires . Before you clean trash from the Engine compartment, wait until the Engine has cooled. Open Hood to cool the Engine faster. While the Engine cools, clean trash from other areas. Check for leaking fuel lines or fittings with a piece of cardboard or wood. Do not use your hands. Tighten loose fittings. If hoses are kinked, install new parts.
H G
F
B C
E D A
K
I
J
E ME RG EN CY / S E RVICE B RA KE LEVER By pushing fully forward on Lever (A) the brakes will be engaged.
A
Brakes will lock if Lever (A) is pushed fully forward and is drawn in toward operator, allowing it to hook behind the extended Carriage Bolt lock tab.
TRACK DRIVE CONTROLS Forward
Forward L
2
1
3
RELEASING SEAT PAN Release the seat latch on the front center of the the seat pan assembly (1). Rotate the Seat/Cover Assembly (2) all the way to the rear until it hits its stop [back edge of the Cover acts as a stop]. ADJUSTING SEAT POSITION To slide Seat forward or back, push Seat Adjustment Lever (3) (under the lower left corner of the Seat) outwardly to release Seat. Set Seat's new position, then release Lever to lock in position. Seat Assembly can be installed at three diff erent locations on Cover using alternate hole patterns.
R
C
H
O
K
E
KEY SWITCH
KEY SWITCH Switch is activated by rotating key clockwise. Turning it fully clockwise will engage engine starter...release key and it will return automatically to the Run position. Turn fully counter-clockwise to Off position to stop Engine. Remove key.
FUEL TANK Optional 4.5 gallon capacity tank shown. Use UNLEADED GASOLINE ONLY. ACCESSORY VALVE The MD750 is equipped with a 3 spool open-center hydraulic valve to operate the numerous hydraulic attachments available. See attachment instruction for proper operation. Optional HC55 HYDRAULIC CIRCUIT An optional hydraulic circuit provides full hydraulic flow and pressure to high flow accessories.
HOUR METER
Two hydraulic hoses with
OPERATION PRE-STARTING INSPECTION Before you start your Crawler for the first time each day, perform the following checks:
CAUTION - Before you start the engine: Clear the work area of people and obstacles. Check the condition of the Crawler. (Prestart inspection). Be sure there is enough ventilation.
ENGINE COMPARTMENT Check oil level. Check air intake system. Check fuel filter. Remove trash and oil/dirt deposits.
TRACKS, ATTACHMENTS, SHEET METAL Check for bent, broken, or missing parts. Check Track Springs.
HARDWARE Check for loose or missing parts.
Be sure to know the correct starting and stopping procedure. Sit in the Operator's Seat.
PREPARE FOR ENGINE STARTING 1. Allow Left and Right Track Controls to assume their natural spring-loaded center neutral positions. 2. Make sure Brake Lever is pushed fully forward and drawn in toward the operator until Lever locks behind "tab".
continuously for more than 10 seconds at a time. If the Engine does not start, allow a 60-second cool-down period between starting attempts. Failure to follow these guidelines can burn out the starter motor.
CAUTION: If the Engine develops sufficient speed to disengage the starter but does not keep running (a "false start"), the Engine rotation must be allowed to come to a complete stop before attempting to restart the Engine.
TRAVELING Hold Brake Lever fully forward, then push outwardly, to unlock it from behind its "tab" or “bolt”. Slowly release pressure on the Lever allowing it to come back to its rearward position! Raise all Attachments to their recommended traveling heights.
To move straight ahead , simultaneously push both Right Track Control and Left Track Control forward.
If the starter is engaged while the flywheel is rotating, the starter pinion and flywheel ring gear may clash, resulting in damage to the starter.
To move straight to the rear , simultaneously pull both Right and Left Track Controls rearward.
If the starter does not turn the Engine over, shut off starter immediately. Do not make further attempts to start the Engine until the condition is corrected.
To turn sharply to the right , push Left Track Control fully forward...leave Right Track Control in neutral.
If the battery charge is not sufficient to turn over the Engine, recharge the battery
To turn slowly to the right, push Left Track Control fully forward while simultaneously pushing "partially" forward on Right Tr k
PARKING THE CRAWLER 1. Lower all Attachments to the ground. 2. Allow Right and Left Track Controls to go "slowly" to neutral. 3. Push fully forward on Main Drive Clutch/ Brake Lever and lock. 4. Run Engine at half speed 2 minutes without load. 5. Move Throttle Control to slow idle. 6. Turn Ignition Switch to Off.
IMPORTANT: If Engine stops under load, remove load. Start Engine immediately. Run 30 seconds at half speed before adding load. If Engine stops, you must turn key Off before you can start the Engine.
FUELS & LUBRICANTS FUELS FUEL SPECIFICATIONS Check enclosed Engine Owner's Manual and closely follow their recommendations.
HYDRAULIC OIL Use a premium quality hydraulic oil with maximum anti-wear properties, rust and oxidation treatment like Mobil-DTE Series 10 (ISO of 32). An ISO of 32 is good for “oil” temperature conditions of +5F to +170F which are considered standard. A local hydraulics or equipment supplier can provide suggestions about a good hydraulic fluid for your region of the country.
FILLING FUEL TANK The Fuel Tank is located to the left of the Operator's Seat.
Fill hydraulic reservoir by first unlatching and raising #2486 Seat Pan. Remove the #2530 Hydraulic Reservoir Cap and pour in oil filling to bottom of filtering screen.
Fill Fuel Tank at end of each day's operation. Fuel Tank capacity is one U.S. gallons. Optional 4.5 gallon tank available Use unleaded gasoline per Engine Owner's Manual.
NOTE: DO not attempt to fill hydraulic reservoir without raising #2486 Seat pan. While the #2530 Hydraulic reservoir is exposed at all times through an opening in the #2486 Seat Pan this is for clearance purposes only.
LUBRICATION and PERIODIC SERVICE LUBRICATION AND SERVICE INTERVALS Recommended service intervals are for normal conditions. Service more often if Crawler is operated under more difficult conditions such as high temperature, dust, etc. Use only quality lubricants at intervals specified in this manual.
PERIODIC SERVICE CHART DAILY OR EVERY 10 HOURS Engine Air Cleaner Service per instructions in Engine Owner's
"zerk" in Front Idler and Rear Drive Assemblies. Remove zerks...try to have them on the "top-side". Using an oil can with SAE 30 motor oil, fill each reservoir through threaded hole...do this at day's end to allow oil to soak into the bearings. Repeat oiling next morning and replace zerks. Repeat process every 25 hours. D u s t y C o n d i t i o n s : Clean area around each "zerk" on Front Idler and Rear Drive Assemblies. Grease each zerk until you see, or feel, grease coming out the bearing ends.
Track Tension Maintain 4.5" overall length of #234 Spring on each Track. Check Service section of this Manual for complete explanation and Track Tensioning procedures. Drive Chain Tension Maintain proper chain tension in Crawler's final drive. Check Service section of this Manual for complete Drive Chain Tensioning
Battery Check electrolyte level (if applicable) and fill with distilled water to the bottom of the filler neck. Filters Replace Engine Filter with filter recommended in Engine Owner's Manual. Replace Hydraulic Oil Filter Canister. Check Fuel Filter for dirt; if showing sediment, replace with new.
Tracks and Track Sprockets Remove and pressure wash Track. Pressure wash Front Idler and Rear Drive Sprockets.
EVERY 200 HOURS Hydraulic Fluid Completely drain system by removing plug in center rear underside of Crawler’s Frame.
SERVICE In the following Service section of this Manual, you will be required to do various assembly and disassembly procedures. Each section will try to remind you of safe procedures, but the best safety device is still the mechanic himself.
CAUTION: Try to do your work in a level, open area away from people and obstacles. 1. Pay attention to what you are doing...the parts you will be handling can be heavy, sharp or could pinch. Always wear heavy gloves when handling the Tracks and similar sharp, pinching components. 2. When you are required to block the Crawler to raise it off the ground, make sure you use strong blocking materials and think out how the Crawler will safely balance on your blocking.
If the starter will not operate or operates sluggishly, check for the following: Run down battery. Dirty, loose, or corroded cables and wires. Engine oil viscosity too heavy.
BATTERY Your Crawler has a 12 volt, negative-grounded system with one Battery-.
BATTERY PRECAUTIONS CAUTION: Sulfuric acid in batteries is a poison and could cause severe burns. Avoid contact with skin, eyes, and clothes. When you work around batteries, protect eyes and face from battery fluid and explosion. Antidotes for Sulfuric Acid:
COLD WEATHER BATTERY SERVICE
SAFETY INTERLOCK SWITCHES
During cold weather, keep electrolyte in battery at correct level (if applicable). Keep battery fully charged.
Two Switches, one in the Seat...and one on the Main Brake Lever, are used in the Crawler's standard electrical system as safety devices. They detect if the operator is properly seated, that the Brakes are engaged and locked before the Crawler can start. A third switch is included when the optional HC55 Hydraulic Circuit is installed.
BATTERY STORAGE If Crawler will be stored for more than 30 days, remove battery. Keep it fully charged.
BATTERY MAINTENANCE 1. Remove corrosion from terminals with a stiff, non-metallic brush. Use care when cleaning CAUTION: terminals so that you do not "short them out" with metallic brushes, scrapers, screwdrivers etc. 2. Clean battery with a baking soda solution (1/4 pound in a quart of water). 3. Flush battery and compartment with clear
The plunger in the #441 Interlock Switch (brake) has to be depressed for the Switch to close and activate the electrical circuits (NO or normally open); the plunger has to be released for the switch to open and safely deactivate the circuit. The plunger of the #1162 Interlock Switch (seat) has to be depressed for the switch to open (NC or normally closed). When the operator gets out of the seat the switch closes the circuit and grounds out the engine thus shutting it off. The plunger of the #1148 Interlock Switch (optional HC55) has to be depressed for the
test is completed, remove continuity tester and replace original electrical connectors on both terminals of Seat Switch. Following recommended safe starting procedures, start the Engine...if it doesn't start, proceed with the Main Drive Clutch/Brake Switch Test (below).
Close Seat/Cover Assembly...check that it is positively latched! At this time, following recommended safe starting procedures, start the Engine and check Main Drive Clutch/Brake Switch's setting...readjust if necessary.
BRAKE SWITCH TEST For this test, raise the Seat Latch and swing the Seat/Cover Assembly fully to the rear until it hits its stop. Remove the electrical plug from the #441 Brake Switch and connect a continuity tester to its two terminals.
441
(1) With "plunger" of Brake Switch not depressed, the light of the continuity tester should be Off. With "plunger" of Brake Switch fully depressed, the light of the continuity tester should be On. 2013
(2) When the Brake Lever is pushed fully forward
440
adjusting nuts
DRIVE CHAIN TENSIONING The #2082 Drive Chains (#50 Roller Chain) are tightened by increasing the center distance between the movable #2065 Rear Axle and the fixed #2430 Sprocket & Shafts. Begin your Drive Chain Tensioning procedure by driving Crawler onto a firm, level surface. Shut off Engine and dismount...do not lock Main Drive Clutch/Brake Lever. [Though not absolutely necessary, it's extremely helpful in the following procedure to block your Crawler up and remove its Tracks...see Track Removal section of this Manual for instructions]. Raise Seat Latch and rotate Seat/Cover Assembly fully rearward and hit its stop. Remove the #2476R & #2476L Right & Left Chain Guards from left & right side of Crawler (be careful not to lose the special #2005 Washers).
2033
To tighten the Drive Chains, start rotating clockwise the Locknut on the end of each #2038 Pull. To draw Rear Axle back evenly, turn one Locknut 1/4 turn, then go to the other side and tighten the other Locknut 1/4 turn...use this back and forth procedure until both Drive Chains are reasonably tight...not "bow-string" tight, but not slack either.
make sure Seat Latch catches securely. If you have blocked-up your Crawler and removed its Tracks, replace Tracks and lower Crawler to ground at this time per Track Maintenance section of this Manual.
ADJUSTMENT - BRAKES The Parking/Emergency Brake provides a force approximately equal to the strength of the Crawler’s drive system and is used in a number of ways. One way, is as a Parking Brake. In this capacity, it holds the Crawler in position when the Engine and drive system is shut off. In addition, it provides a safe start mode , as the Brake must be engaged before starting the Engine. If the operator inadvertently touches the Track Drive Controls during Engine starting, the Brake will severely load the drive system and potentially kill the Engine (unless the Track Drive Controls are released immediately). The Brake’s other use is that of an Emergency Brake. If you should ever lose Engine or drive system power, the Brake can be activated instantly to hold the Crawler safely in position.
DISK BRAKE ADJUSTMENT CAUTION Read the following Disk Brake
225R
225B
225D
2500
910
225C
217A
#217A5 Clevis appropriately to adjust the length of the linkage. When satisfied with equal adjustment re-install the #2501 pin, secure with #910 Lynch pin, and tighten jut to secure #217A position. Hold each #225D Adjuster with wrench and tighten its respective #225C Jam Nut.
DANGER: The proper adjustment and maintenance of your Disk Brakes can not be overemphasized! Double check your work for safety. Always call our Service Department with any doubts or questions you may have! With both Brakes in balance, you can now evenly set their working tension. Using a "spring scale", pull forward at top of Brake Lever with a force of approximately 15 lbs. This force should allow the Brake Lever to pas and lock behind the exposed carriage bolt head.. If it takes less than this pressure, evenly shorten the brake linkage assemblies as describe above until you reach the approximately 15 lb. force
TRACK MAINTENANCE Before attempting to complete any part of this Track Maintenance section, it is recommended that you read all three parts (Track Removal, Track Replacement and Track Tensioning) to provide background on how the total Track System is adjusted and maintained. Below are a series of drawing to aid you in parts identification as you read the following procedures. For clarity, only the parts described in the instructions are included in most of the photos. In some cases, certain parts do not appear in all drawings, to lessen confusion.
CAUTION: When working with the Tracks, you will be dealing with some significant weights and lifting situations. Though the Crawler can be successfully "blocked up" off the ground and the Tracks removed and replaced by a single person, it's advisable to have an able-bodied "helper" available for both assistance and safety.
Loosen and remove the first 1/2" Nut and Lock Washer from the threaded end of each #1030 Tension Rod.
By rotating the "nut end" of each #1030 Tension Rod counter-clockwise, loosen and remove
Pulling forward on the Track will allow you to now loop the Track off the remaining Outer Sprocket on the Front Idler allowing complete Track removal.
TRACK REPLACEMENT Before replacing a Track, it's wise to thoroughly clean it of all debris...a pressure wash job is a good idea. Slip the rearward end of Track around the Inner & Outer Sprockets of the Rear Drive engaging the Track's Inner Chain between the Inner & Outer Sprockets of the Rear Drive.
Loop the forward end of the Track around the
NOTE: The preceding procedure is the same for the replacement of either Track. Replace each #234 Spring (removed above under “track removal”) by slipping it over the threaded end of its respective #1030 Tension Rod (on outside of each Track) and over its #262 Tube (which should still be in place on Tension Rod). Secure each Spring with its original #236 Washer and 1/2" Nut (fine thread).
NOTE: "Notched edge" of #235 Washers should still be pointing in, toward crawler's center! By rotating nut end of each #1030 Tension Rod clockwise, draw the 1/2" Nut and #236 Washer (on each Tension Rod's end) against its respective #234 Spring such that each Spring is compressed to a total length of 4.5". NOTE: Tighten the pair of #234 Springs 1/4" at a time. Tighten the left side #234 Spring 1/4", then stop and go to the right side #234 Spring
FOOTREST ADJUSTMENT Rotate (clockwise or counter-clockwise) the nut end of each #1030 Tension Rod so that its respective #236 Washer (next to #234 Spring) is drawn forward (or released rearward) thereby setting its respective #234 Spring to a final length of 4.5".
Right & Left Footrests (L) are adjustable in three positions front to rear. To adjust, remove the three 3/8" Cap Screws holding each Footrest. Relocate Footrest to its new position by aligning the two 3/8" slots in lower lip of Footrest with a mating set of two 3/8" holes in floor of its respective Fender. Locate the third 3/8" slot (in side lip of each Footrest) with closest mating 3/8" wide vertical slot in Crawler's body wall. From outside, insert 3/8" Cap Screws into the above mating holes and slots; secure inside with 3/8" Locknuts.
SEAT LOCATION Work from left side to right side of Crawler tightening each Spring 1/4" at a time until you have achieved a 4.5" overall length for both Springs. [Measure Spring length only]. At this time remount and safely restart your Crawler. Drive it approximately 25 feet forward and then go in reverse, back to your starting point.
The Seat and its associated "track assembly" can be located in three positions (front to rear) on the Cover assembly. To change Seat location, release Seat Latch and using the Seat as a handle, rotate the Seat/Cover Assembly rearward until it hits its stop. Inside the Cover, remove the four 5/16" Nuts and
Part Photo MD750-1
2462
1 2065 1028
Parts Identified 1 02 8
B us hi ng , to rq ue
2 03 8
P ul l A ss em bl y
2065
Axle (2)
24 01
B ea ri ng ( 2)
2 403
R et ai ner (4 )
2461L
Wall, Left
246 2
E ngi ne M ou nt
24 63
Tr ay , Bot to m
24 65
Wal l, R ear
2474L
Mounting Plate, Left
2474R
Mounting Plate, Right
2 47 5
M ou nt in g P la te
2491
Brake Handle Assembly
2
2461L
2461R
3
2463
4 2491 2403
2403
5 2401
2401
2475
2475
6
2038
7
2474R 2474L
2065
2038
2465
8
Part Photo MD750-2
1
Parts Identified 2005
Washer
2 00 7
P la te B ea ri ng
2036R
Elbow, fender, right rear
2033
Axle Support, rear
2065
Axle
2401
Bearing
2461R
Wall, Right
2476
Plate Bearing, thick
2477
Plaet Bearing, thin
2
3 2466
4 2476
2477
5 2401 2036R
6
2005
2033
2007
7
2065
8
Part Photo MD750-3
1
Parts Identified 225C
Jam nut
2 25 D
A dj us te r P in
225L
Brake Caliper, left
225R
Brake Caliper, right
524
Motor (2)
52 5
F it ti ng , 90 °el bow
2 46 0
D is c A ss em bl y ( 2)
2460A
Hub
24 60B
D is c
2473
Mount, Brake Caliper (2)
2 2473
2473
225D
225D
3
225R
225L 225C
225C 525
4 2460B
2460
524 524
2460A
5
6
7
8
Part Photo MD750-4
1
Parts Identified 21 7A
C lev is ( 4)
225L
Brake Caliper, left
225R
Brake Caliper, right
440
Leaf Spring
4 41
I nt er lo ck Sw it ch , b ra ke
52 5
F it ti ng , 90 °el bow
910
Cotter Pin (4)
2013
Mount, interlock switch
2485
Linkage, brake (2)
2486
Hydraulic Fluid Reservoir
2491
Brake Handle Assembly
2493
Hose, 5/8” soft X 15”
2494
Hose, 5/8” soft X 23”
2495
Hose, 1/4” soft X 10” (2)
2 49 6
H os e, 1- 1/ 2” s of t
2525
Fittin g, straight (4)
2493
2496
2494
2
3 2495 2495
225R
225L
4 2525
2525 525
2525
2525 525
5
2485
6
2486
217A
7
441 2013
910 440
2491
8
Part Photo MD750-5
1 2526
Optional Valve Section for HC55 Hydraulic Circuit
Parts Identified 440
Leaf Spring
4 41
I nt er lo ck Sw it ch , b ra ke
686
Fitting, 45°
2013
Mount, interlock switch
23 17
F it ti ng , 90 °
2502
Hose, 3/8” X 19” (2)
2503
Hose, 3/8” X 15-1/2” (2)
25 26
F it ti ng , 4 5°
2
3 686 2317
4
5
6 2503
2502 441
2503
2502
7
2013
8 440
Part Photo MD750-6
1
Parts Identified 70 5
Was her , 1- 3/ 16” ID
792
Fitting, 90°
2005
Washer
2 02 6
Tr ac k E xp an de r
2065
Axle
2430
Rear Drive Sprocket
2458
Valve, Attachment
2466
Seat Pan
2476L
Guard, chain - left
2482R
Slide, Left
2483
Brace
2497
Chain, #50 final drive
2505
Hose, 3/8” X 36”, quick connect - optional HC55
25 27
F it ti ng , 9 0°
2 2476L
2466
3
2430
4
2527
792 2458
2005 2497
5 2065 705
2483
2026
6
2482R
7
2505
2505
8
Part Photo MD750-7
1 2034L
Parts Identified 787
Flange
792
Fitting, 90°
963
Cap, oil drain
2017
Channel, engine mount
2034L
Gusset, left
2034R
Gusset, right
2065
Axle
2083
Engine
2459
Pump
24 62
E ng in e mou nt
24 63
Tr ay , bo tt om
24 79
G ri ll , L ow er
2 480
To rq ue A rm
2 52 8
p ip e, oi l d ra in
252 9
Fi tt ing, 90 °
2
2083
3
2462
4 787
2065
2463
2479 2017 963
5
2528
6 2529 792
2459
7
2034R 2480
8
Part Photo MD750-8
1 2481
Parts Identified 413
St rap, battery
442
Battery
470
Radiator
4 75
S en so r, t em pe ra tu re
619
Fitting, 90°
678
Fitting, 90°
680A
Filter Head, hydraulic
680B
Filter, hydraulic
861
Fitting
931
Clamp, hose
948
Fan, 9”
2071
Cap, red
2072
Cap, black
2 48 1
G ua rd , r ad ia to r
2482R
Slide, Right
2494
Hose, 5/8” soft X 23”
2 50 8
H os e, 1/ 2” X 2 5”
2542
Wire, 6 ga black, 10-1/2”
2544
Wire, 6 ga black, 10-1/2”
2550
Wire, 14 ga brown, 45”
2
619
678 680A
861
931
3 475
680B
4 2482R
470
948 2508
2494
5
2550
6 413 2072 2071
7
442 2542 2544
8
Part Photo MD750-9
1 933A
Parts Identified 279
Grommet
680B
Filter, hydraulic fluid
913
Cap, oil drain
933A
Seat
1029
Fuel tank, 4.5 gallon
11 41
Gr il , upp er
2022L
Footrest, left
2022R
Footrest, right
2060
Grip, red, brake handle
2458
Valve, Attachment
2468L
Fender, left
2491
2490 2458
3
1029 2507
2468R Fender, right 24 79
Gr il l, Lo wer
2490
Hood
2 49 1
H an dl e, b ra ke
2505
Hose, 3/8” X 36”, quick connect - optional HC55
2507
Hose, 1/2” X 17-1/2”
2 50 8
H os e, 1/ 2” X 2 5”
2
2060
2508
4
279 2505
1141 2505
5 2022R
2022L
2468L
2468R
6
2479
7
913
8
Part Photo MD750-10
1
Parts Identified 442
Battery
680B
Filter, hydraulic fluid
933A
Seat
933B
Slide, with handle
933C
Slide, without handle
1029
Fuel Tank, 4.5 gallon
1105
Bracket, seat mount (2)
2 03 8
P ul l A ss em bl y (shown with1/2” nylon lock )
2060
Grip, red, brake handle
2465
Wall, rear
2466
Seat Pan
2468L
Fender, left
2 2060
2481 2491
933A
3 1105 933B
G ua rd , ra di at or
2482L
Slide, Left
2486
Hydraulic Fuid Reservoir
2530
Cap, hydraulic reservoir
933C
442
680B
4 2466
2468R Fender, right 2 48 1
1105 2530
2482L 1029
5 2486 2460
6
2468L 2468R
2465
2038
7
2038
8
Part Photo MD750-11
1
933A
Parts Identified 234
Spring, t ens ion
2 62
Tu be ( in si de s pr in g)
495
Latch
933A
Seat
933B
Slide, with handle
1029
Fuel Tank, 4.5 gallon
10 30
Ten si on Rod
1 08 1
C ap , f ue l t an k
11 48
I nt er lo ck S w it ch (optional HC55)
2022L
2
2490
2 03 1
C ap , e xp an de r Tr ac k E xp en de r
2430
Rear Drive Sprocket
2433
Front Idler Sprocket
2 45 0
Tr ac k A ss em bl y
2468L
Fender, left
2490
Hood
2498
Throttle
2499
Choke
3
2498 1081
2499
Footrest, left
2 02 6
933B
1148
4
495 1029 2022L
5 2468L
6
2430
2433
7 262 2031
234
2026
1030
2450
8
Part Photo MD750-12
1 933A
Parts Identified 234
Spring, t ens ion
235
Washer , notched
2 62
T ub e ( in si de s pr in g)
495
Latch
933A
Seat
933B
Slide, with handle
1029
Fuel Tank, 4.5 gallon
10 30
Te ns ion Rod
1 08 1
C ap , f ul e t an k
2022R
Footrest,right
2 02 6
Tr ac k E xp en de r
2 03 1
C ap , e xp an de r
2430
Rear Drive Sprocket
2433
Front Idler Sprocket
2 45 0
Tr ac k A ss em bl y
2
2490
3
2472
4 495 2022R
2468R Fender, right 2472
Dash
2 48 1
G ua rd , ra di at or
2490
Hood
2481
5
2468R
2503
6
2433 2430
7 2026
262 1030
234 235
2031
8 2450
Part Photo MD750-13
1
photo includes installed HL600 Loader
486
Parts Identified 442
Battery
455
Ammeter
486
Hour Meter
4 87
O il Te mp er at ur e G au ge
680B
Filter, hydraulic
933A
Seat
1029
Fuel Tank, 4.5 gallon
1 08 1
C ap , f ue l t an k
2014
Brace
2466
Seat Pan
2 48 1
G ua rd , ra di at or
2498
Throttle
2499
Choke
444 487
455
2
2499 2498
3
2060
4
933A 2481 1081
5
442
1029 680B
6
2466
7
2014
8
MD750 Hydraulics
1
2502
Parts Identified 470
Radiator
524
Motor (2)
680A
Hydraulic Filter Head
6 80 B
H yd ra ul ic F i lt er
116 3
D ri ve Va lv e (shown with optional HC55 section)
2458
Valve, Attachment
2459
Pump
2486
Hydraulic Fluid Reservoir
2493
Hose, 5/8” soft X 15”
2495
Hose, 1/4” soft X 10” (2)
2494
Hose, 5/8” soft X 23” (2)
2 49 6
H os e, 1” s of t X 2 0”
2 50 2
H os e, 3/ 8” X 1 9” ( 2)
2503
Hose, 3/8 X 15-1/2” (2)
2506
Hose, 1/2” X 21-1/4”
2507
Hose, 1/2” X 17-1/2”
2 50 8
H os e, 1/ 2” X 2 5”
2503 524 2
2493 2506 2495
3 Optional HC55
2496
2459
ENGINE 4
2495
5
524 2503 2507
6
2502
2494
7
2508 680A
470
680B
2494
8
