Cub Cadet 900 Series Professional Shop Manual
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Cub Cadet 900 Series Professional Shop Manual

Riding tractors
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Professional Shop Manual
900 Series Riding Tractors
NOTE: These materials are for use by trained technicians who are experienced in the service and repair of outdoor power
equipment of the kind described in this publication, and are not intended for use by untrained or inexperienced individuals.
These materials are intended to provide supplemental information to assist the trained technician. Untrained or inexperi-
enced individuals should seek the assistance of an experienced and trained professional. Read, understand, and follow all
instructions and use common sense when working on power equipment. This includes the contents of the product's Oper-
ators Manual, supplied with the equipment. No liability can be accepted for any inaccuracies or omission in this publication,
although care has been taken to make it as complete and accurate as possible at the time of publication. However, due to
the variety of outdoor power equipment and continuing product changes that occur over time, updates will be made to these
instructions from time to time. Therefore, it may be necessary to obtain the latest materials before servicing or repairing a
product. The company reserves the right to make changes at any time to this publication without prior notice and without
incurring an obligation to make such changes to previously published versions. Instructions, photographs and illustrations
used in this publication are for reference use only and may not depict actual model and component parts.
MTD Products Inc. - Product Training and Education Department
© Copyright 2008 MTD Products Inc. All Rights Reserved
FORM NUMBER - 769-04590A
4
02/2009

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Summary of Contents for Cub Cadet 900 Series

  • Page 1 Professional Shop Manual 900 Series Riding Tractors NOTE: These materials are for use by trained technicians who are experienced in the service and repair of outdoor power equipment of the kind described in this publication, and are not intended for use by untrained or inexperienced individuals.

  • Page 3: Table Of Contents

    Description of the 900 series ........
  • Page 4 Brake adjustment ........... . . 60 Gear selector .
  • Page 5 Batteries ............118 Battery Testers .

  • Page 7: Chapter 1: Introduction

    • Common sense in operation and safety is assumed. • In no event shall MTD or Cub Cadet be liable for poor text interpretation, or poor execution of the procedures described in the text. • If the person using this manual is uncomfortable...

  • Page 8: Description Of The 900 Series

    INTRODUCTION Description of the 900 series The 900 series is a new tractor platform introduced in Model and Serial Numbers the 2009 season. This platform replaces the traditional The model and serial number tag can be found under 600 series tractor. See Figure 1.1.

  • Page 9: Chapter 2: Engine Related Parts

    ENGINE RELATED PARTS CHAPTER 2: ENGINE RELATED PARTS This manual will cover the engine accessories that are Disconnect the muffler from the engine. manufactured by Cub Cadet. For single cylinder engines: IMPORTANT: Refer to the engine manufac- • Remove the two screws that secure the exhaust turer’s manual for engine specific service infor-...
  • Page 10 ENGINE RELATED PARTS For twin cylinder engines: With the muffler on a work bench, remove the four screws that hold the muffler deflector to the • Remove the two nuts that secure each exhaust muffler. See Figure 2.6. pipe to the cylinder head. See Figure 2.4. Remove these screws Remove these...

  • Page 11: Fuel Tank Removal/Replacement

    ENGINE RELATED PARTS Fuel tank removal/replacement Work the fuel tank support bracket off of the trac- Remove/replace the fuel tank by following these steps: Slide the fuel tank out from in between the dash CAUTION: The following steps involve working and the engine.
  • Page 12 ENGINE RELATED PARTS...

  • Page 13: Chapter 3: Steering

    STEERING CHAPTER 3: STEERING Steering alignment In front of the axle, measure the distance hori- zontally from the inside of the left rim to the IMPORTANT: The front tires will have a “TOE- inside of the right rim. See Figure 3.2. IN”...

  • Page 14: Axles

    STEERING Remove the hex nut and lock washer that Axles secures the right ball joint to the right axle NOTE: The left and right axle have a “L” or a “R” assembly using a 1/2” wrench and a 9/16 stamped on the end of the shaft for identification. wrench.
  • Page 15 STEERING Remove the nut holding the drag link to the Remove the spacer and lower the axle out of the steering block using a 1/2” and 9/16” wrench. pivot bar. See Figure 3.6. NOTE: Starting in the 2010 season, some trac- tors will be equipped with a stamped pivot bar.

  • Page 16: Steering Gear And Steering Pinion Gear

    STEERING Steering gear and steering pinion gear Push the steering shaft up through the frame of the tractor. If you are replacing the steering gear or steering pinion gear, check the condition of both gears for any wear or Remove the hex bushing. See Figure 3.11. damage.
  • Page 17 STEERING Remove the steering plate. Remove the bolt that the steering gear pivots on using two 9/16” wrenches. See Figure 3.13. Remove the hex cap screw, shoulder spacer and hex nut in the middle of the steering gear using NOTE: When installing the steering gear, coat two 9/16”...

  • Page 18: Steering Shaft And Hex Bushing

    STEERING Steering shaft and hex bushing 3b. Remove the bolt that holds the steering wheel to the steering shaft using a 1/2” To remove the steering shaft or to replace the hex wrench. bushing: 3c. Lift the steering wheel off of the steering Remove the cutting deck by following the steps shaft.
  • Page 19 STEERING Lift up on the steering shaft and remove the Remove the six screws that secure the steering washer. See Figure 3.18. plate to the frame. See Figure 3.12. Remove the washer Lift up on the steering shaft Remove these screws on each side Figure 3.20 Figure 3.18 Push the steering shaft up through the frame of...

  • Page 20: Pivot Bar

    STEERING Pivot bar Jack up the front end of the tractor and securely NOTE: Starting in the 2010 season, there will be place on jack stands. a stamped pivot bar on some models. The pro- cedure to remove it is the same as the cast iron Remove the axles by following the procedures pivot bar described in the previous steps.

  • Page 21: Chapter 4: Body Panels

    BODY PANELS CHAPTER 4: BODY PANELS What is covered by this chapter Hood The intent of this chapter is to describe the removal Hood removal: and disassembly of the major body panels on the trac- The hood is front-hinged. See Figure 4.2. tor.

  • Page 22: Hood Components: Headlight Removal

    BODY PANELS The hood hinges on a pair of shoulder bolts that Rotate the bulb to release it from the socket. fit into slots in the hood bracket. See Figure 4.6. The hinge travel is limited by a tab that fits into a Single-pin 1156-style lamp channel in the hood bracket.

  • Page 23: Hood Components: Grill Removal

    BODY PANELS Hood components: grill removal Once removed, the headlight lens may be removed for cleaning by carefully prying the two Remove the hood assembly from the tractor, and lock tabs at the inner edge. See Figure 4.10. place it on a stable work surface. Loosen, but do not remove the screws that hold Locating tab Lock tabs...

  • Page 24: Hood Components: Pivot Bracket Removal

    BODY PANELS Hood components: pivot bracket removal Seat and Fenders Remove the four screws that hold the outer arms CAUTION: The battery will be removed in this of the pivot bracket to the hood using a 3/8” procedure. Review the Operator’s Manual and wrench.
  • Page 25 BODY PANELS Removal procedures for fenders are very similar on all 1c. Slide the seat forward to the end of its travel, variants. Where necessary, notes will be included to then lift it up to disengage the slide blocks cover slight differences in procedures. from the “T”...
  • Page 26 BODY PANELS 1g. To remove the seat safety switch: squeeze 2a. Disconnect the positive battery cable from the tabs on the side of the switch, and push the battery (the negative battery cable was it into the seat base. See Figure 4.18. disconnected in an earlier step).
  • Page 27 BODY PANELS 2d. Lift the battery tray out of the tractor. CAUTION: When reinstalling a battery in this 3b. If the tractor has a deck lift assist spring, tractor, use only the original type of battery. remove the deck or lift the mower deck to The negative terminal must go toward the rear of the highest position and support it with wood the tractor.
  • Page 28 BODY PANELS 3d. Remove the grips from the deck lift lever Remove the rubber foot pads. See Figure 4.27. and PTO engagement lever (on manual PTO models). See Figure 4.25. lever Deck height lever Figure 4.27 Figure 4.25 Remove the drive pedals. 5a.
  • Page 29 BODY PANELS 5b. Unbolt the drive pedal using a 1/2” wrench, 6b. Remove the two bolts that are found under and maneuver it out of the tractor. the label using a 3/8” wrench. See Figure 4.29. 6c. Remove the four bolts that hold the fender to the seat-box portion of the frame using a 1/ Drive linkage 2”...
  • Page 30 BODY PANELS 6e. Carefully lift the fender assembly off of the tractor. NOTE: With the handle assembly removed, the NOTE: On tractors equipped with a Kohler sin- steel reinforcement plate can be unbolted from gle cylinder engine, the front of the fender the top side of the fender using a 3/8”...

  • Page 31: Dash Panel

    BODY PANELS Dash Panel The dash panel may be removed to provide easier CAUTION: The following steps involve working access to the cruise-control and drive system linkages, with gasoline. Gasoline is flammable, and steps or to replace the dash or dash support brackets. should be taken to avoid fire hazard;...
  • Page 32 BODY PANELS 3c. Support the fuel tank. Disconnect the harness plugs from the following electrical devises under the dashboard: 3d. Remove the two screws that hold the bottom See Figure 4.41. of the wire form bracket to the dash support brackets using a 3/8”...
  • Page 33 BODY PANELS Remove the two Torx head screws that hold Disengage the rod from the lever assembly. the throttle control to the dash panel using a T- NOTE: The rod is kept in slight tension by a light 27 driver. See Figure 4.43. spring that hooks between the frame and the step in the middle of the rod.
  • Page 34 BODY PANELS Remove the four screws that hold the base of the dash panel to the frame using a T-40 driver and a 1/2” wrench. See Figure 4.47. Tor-X head screw Hex-head cap screw Figure 4.47 Lift the dash panel off of the tractor. See Figure 4.48.

  • Page 35: Chapter 5: Hydro. Drive And Brake System

    CHAPTER 5: HYDRO. DRIVE AND BRAKE SYSTEM About this chapter Externally repairable drive system problems The drive and brake systems for the Cub Cadet Series Most of the problems listed in this section will result in a 1000 tractor are combined. Two reasons for this:...
  • Page 36 HYDRO. DRIVE AND BRAKE SYSTEM Check the hydro. by-pass linkage: Check the brakes: See Figure 5.3. See Figure 5.2. 4a. The brake linkage applies the brakes and disengages the drive belt. Confirm that both parts of the linkage are moving properly. •...
  • Page 37 HYDRO. DRIVE AND BRAKE SYSTEM 4b. If the linkage is working properly, but the Check the drive belt. See Figure 5.6. brakes seem to be dragging, check the cali- • In normal use, drive belts typically last for years per. See Figure 5.4. without problems.
  • Page 38 HYDRO. DRIVE AND BRAKE SYSTEM Check the drive control linkage. See Figure 5.7. 6c. The most likely causes for additional lost motion that would effect the ground speed of tractor are: See Figure 5.9. Drive pedal latch plate • The drive pedal itself being loose on the bracket. Travel limit pin Drive pedal bracket •...
  • Page 39 HYDRO. DRIVE AND BRAKE SYSTEM Check the fluid: Transaxle mounting: • Unless the fluid gets contaminated, it should last 8a. The primary symptoms of a transaxle that is for many years with no fluid service. loose in the frame are that it will lose drive or throw-off the drive belt in reverse.

  • Page 40: Indications That A Transaxle Is Not Warrantable

    HYDRO. DRIVE AND BRAKE SYSTEM Indications that a transaxle is not warrantable Brake adjustment Anything that would indicate misuse, abuse, neglect, Test the operation of the brakes accident, improper maintenance, alteration, vandalism, 1a. Disengage the transmission release rod by theft, fire, water or damage because of other peril or pulling it out and hooking it.
  • Page 41 HYDRO. DRIVE AND BRAKE SYSTEM Visually inspect the linkage to confirm that it 2b. Check the gap between the brake rotor and functions properly. See Figure 5.14. the brake pads. • There is a fixed pad in the transaxle housing. •...

  • Page 42: Neutral Control Adjustment

    HYDRO. DRIVE AND BRAKE SYSTEM Neutral control adjustment Confirm that the linkage is in the neutral position: The roller on the control arm must be centered in NOTE: Neutral control rarely goes out of adjust- the “elbow” of the control cam. See Figure 5.18. ment on its own.

  • Page 43: Linkage: Pedal Shaft

    HYDRO. DRIVE AND BRAKE SYSTEM Lock the adjusting puck, then confirm that the Linkage: pedal shaft wheels and brake rotor are still motionless. Description: The Clutch/brake pedal and the drive con- Turn-off the engine. trol pedal operate on two concentric shafts. Reinstall the seat, reconnecting the seat switch.

  • Page 44: Pedal Shaft Assembly Removal

    HYDRO. DRIVE AND BRAKE SYSTEM Pedal shaft assembly removal Unhook the clutch/brake pedal return spring. See Figure 5.24. NOTE: Confirm that the parking brake is released before starting work. Clutch/brake pedal return spring Remove the mowing deck. Remove the fenders, as described in the body panels chapter of this manual.
  • Page 45 HYDRO. DRIVE AND BRAKE SYSTEM Loosen the bolt that holds the left pedal shaft Allow the drive pedal shaft to rotate down, then support strap using a 1/2” wrench. pull it off of the pedal shaft assembly. See Figure 5.26. See Figure 5.28.
  • Page 46 HYDRO. DRIVE AND BRAKE SYSTEM Remove the left side pedal shaft support strap, Inspect the pedal shaft components individually. and lower the pedal shaft assembly out of the Replace any parts that are worn or damaged. tractor. See Figure 5.30. See Figure 5.32.

  • Page 47: Belt Control; Tensioner And Idler Pulleys

    HYDRO. DRIVE AND BRAKE SYSTEM Belt control; tensioner and idler pulleys NOTE: Leaving the drive control pedal shaft NOTE: The V-idler pulleys can be removed from loose until after the brake rod is secured will below using a 1/2” wrench, with no disassembly make it easier.
  • Page 48 HYDRO. DRIVE AND BRAKE SYSTEM Disconnect the extension spring that pulls on the Maneuver the belt tensioner bracket assembly to bracket to tension the drive belt. clear the belt, and remove it from the tractor. See Figure 5.37. See Figure 5.39. Extension spring Mounting points Figure 5.37...
  • Page 49 HYDRO. DRIVE AND BRAKE SYSTEM The rod that connects the bracket to the clutch/ brake pedal shaft can be maneuvered to come NOTE: When installed, the head of the bolt that out of its slot in the bracket. See Figure 5.43. holds the bracket assembly to the tractor rests against the shouldered side of the flat sheave idler pulley.

  • Page 50: Drive Belt Replacement

    HYDRO. DRIVE AND BRAKE SYSTEM Drive belt replacement 4b. Lift-off the cooling fan. CAUTION: The battery will be removed in this 4c. Remove the pulley. The belt will clear the procedure. Review the Operator’s Manual and belt keepers on top of the transaxle as the Chapter 7: Electrical System for important safety pulley comes up.
  • Page 51 HYDRO. DRIVE AND BRAKE SYSTEM Lift and safely support the tractor. Remove the single, fixed idler from the frame of See Figure 5.48. the tractor using a 1/2” wrench. See Figure 5.50. Fixed idler Belt keeper pin Figure 5.48 Figure 5.50 Work the belt out of the two pulleys on the belt Remove the belt keeper near the engine pulley tensioner bracket.
  • Page 52 HYDRO. DRIVE AND BRAKE SYSTEM 8b. With electric PTO, there are two fasteners: 9c. Remove the belt. See Figure 5.52. Lower the engine pulley to remove the belt; 8c. One bolt holds the belt keeper to the frame, manual PTO. to the left side of the engine.
  • Page 53 HYDRO. DRIVE AND BRAKE SYSTEM 10c. Carefully lower the PTO clutch and any associated hardware. See Figure 5.56. NOTE: The flat edge of the crankshaft pulley faces the electric PTO clutch. The end with the Washers (2) inside diameter chamfered goes against the fillet PTO clutch near the base of the crankshaft.

  • Page 54: Changing Transaxle Hydraulic Fluid

    The belt is routed to the left of the steering shaft, NOTE: The Hydro-Gear hydrostatic transaxle and the fore-most keeper pin goes between the used in the Cub Cadet 1000 Series tractors typi- runs of the belt. See Figure 5.59. cally lasts for many years of homeowner use without fluid maintenance.
  • Page 55 HYDRO. DRIVE AND BRAKE SYSTEM Locate the fill port. It is the socket-head cap plug 11a. Open the by-pass valve. on top of the transaxle casting. It is not the black 11b. Start the engine, and run it at low RPMs. cap on top of the plastic catch tank.

  • Page 56: Brakes

    HYDRO. DRIVE AND BRAKE SYSTEM Brakes Slip the return-to-neutral spring off of the spacer on the front bolt. NOTE: The brakes may be repaired in the trac- tor, using procedures shown on the bench. The yoke and outer pad will separate from the transaxle.

  • Page 57: Transaxle Removal And Replacement

    HYDRO. DRIVE AND BRAKE SYSTEM With the brake yoke removed, the brake rotor Transaxle removal and replacement floats on a splined brake shaft. See Figure 5.69. CAUTION: The battery will be removed in this • The by-pass linkage must be removed to take procedure.
  • Page 58 HYDRO. DRIVE AND BRAKE SYSTEM 4a. Remove the nut using a 3/4” wrench. Release the parking brake. An impact wrench with a socket will be most Lift, and safely support the tractor. The rear of effective. the tractor should be high enough to allow the 4b.
  • Page 59 HYDRO. DRIVE AND BRAKE SYSTEM Disconnect the drive control rod from the trun- Remove the torque bracket bolts using a 1/2” nion arm of the hydro. See Figure 5.76. wrench. See Figure 5.78. Drive control rod Trunnion arm Bolts Torque bracket Spring Cotter Figure 5.78...
  • Page 60 HYDRO. DRIVE AND BRAKE SYSTEM Carefully lower the transaxle out of the tractor. On the bench; See Figure 5.80. 19a. The top of the reverse safety switch is held against the trunnion arm by the post on the drive control rod. See Figure 5.82. Round hole Oblong hole Figure 5.80...
  • Page 61 HYDRO. DRIVE AND BRAKE SYSTEM 19c. The large return-to-neutral spring can be Installation notes: unhooked from the return to neutral cam. 20a. After repairs are done, and the transmission See Figure 5.84. is re-filled with fluid, it may be “bench purged”...
  • Page 62 HYDRO. DRIVE AND BRAKE SYSTEM...

  • Page 63: Chapter 6: Cvt Drive And Brake System

    • The drive control pedal tensions the front drive common linkage. belt. The transaxle used in the Cub Cadet Series 1000 is a • The center partition of the variable speed pulley relatively simple gearbox containing forward, neutral, separates the lower (front) belt from the upper and reverse gears.

  • Page 64: Externally Repairable Drive System Problems

    If the linkage is working properly, but the Find the specified engine RPM for the trac- brakes seem to be dragging, check the tor ( 3,375-3,525 RPM for the Cub Cadet brake yoke. The linkage is not adjustable. Series 1000).
  • Page 65 CVT Drive and brake system • When the brakes are released, it should be pos- Check the drive control linkage. See Figure 6.5. sible to wiggle the brake rotor within the yoke. • If the rotor is tight in the caliper, check the yoke adjustment.

  • Page 66: Indications That A Transaxle Is Not Warrantable

    CVT Drive and brake system Transaxle mounting: See Figure 6.7. Brake adjustment Test the operation of the brakes: See Figure 6.8. Put the transaxle in neutral. Set the parking brake by depressing the Torque brake/clutch pedal and pushing-down on bracket the parking brake/cruise control lever.
  • Page 67 CVT Drive and brake system Visually inspect the linkage to confirm that it Check the gap between the brake rotor functions properly. See Figure 6.9. and the brake pads. • Beneath the floor panel, on the right side of the •...

  • Page 68: Gear Selector

    CVT Drive and brake system Gear selector To adjust the linkage, put the gear selector in neutral position. • The forward-neutral-reverse gear selector is on the left rear fender of the tractor. Confirm that the tractor is in neutral by releasing the brakes and rolling it back and forth.

  • Page 69: Tensioner Pulley Control Rod

    CVT Drive and brake system Tensioner pulley control rod To check and adjust the link: The tensioner pulley control rod is the link that ties the Set the belts to their lowest speed position; pedal shaft to the pulleys that tighten the front drive Start the engine.

  • Page 70: Linkage: Pedal Shaft

    CVT Drive and brake system Remove and discard the cotter pin that holds the Linkage: pedal shaft plain end of the rod to the cobra head arm on the Description: The Clutch/brake pedal and the drive con- pedal shaft. See Figure 6.18. trol pedal operate on two concentric shafts.

  • Page 71: Pedal Shaft Assembly Removal

    CVT Drive and brake system Pedal shaft assembly removal: Unhook and remove the clutch/brake pedal return spring. NOTE: Confirm that the parking brake is released before starting work. Remove the cotter pin and flat washer that hold the brake rod into the latch plate. Discard the Remove the mowing deck.
  • Page 72 CVT Drive and brake system Loosen the bolt that holds the left pedal shaft Remove the bolt from the left side pedal shaft support strap using a 1/2” wrench. support strap, and remove the pedal shaft See Figure 6.25. assembly from the tractor. See Figure 6.27. Complete pedal shaft assembly Brake pedal bracket Drive pedal bracket...
  • Page 73 CVT Drive and brake system Once the cobra-head rod is loose, the drive con- Install the pedal shaft assembly by reversing the trol pedal shaft can be rotated and slipped off of steps used to remove it, then install the fenders. the brake pedal shaft.

  • Page 74: Linkage: Pedal Tie Strap

    CVT Drive and brake system 17b. Position the two rods that connect to the Linkage: pedal tie strap brake pedal shaft as the pedal shaft NOTE: If there is reason to remove the pedal tie assembly is being lifted into the tractor: strap, it can be taken-off without further disas- •...

  • Page 75: Belt Control: Tension Make-Up Pulley

    CVT Drive and brake system Slip the tie plate off of the hex bushing, and Belt control: tension make-up pulley remove it. CAUTION: The battery will be removed in this Snap the hex bushing off of the brake pedal procedure. Review the Operator’s Manual and shaft.

  • Page 76: Belt Control: Variable Speed Pulley

    CVT Drive and brake system The arm pivots on a shouldered bushing. Belt control: variable speed pulley See Figure 6.39. CAUTION: The battery will be removed in this • A shoulder bolt threads into the bottom of the procedure. Review the Operator’s Manual and arm, for the tension spring to hook onto.
  • Page 77 CVT Drive and brake system Roll the lower drive belt out of the lower sheave Bench repairs: of the variable speed pulley. See Figure 6.43. Clamp the pulley and bracket assembly into a vise, gripping the center shaft of the Variable speed pulley variable speed pulley.

  • Page 78: Belt Control: Tensioner Pulleys

    CVT Drive and brake system Remove the three screws that fasten the Belt control: tensioner pulleys bearing holder to the bracket, and lift away NOTE: The V-pulley can be removed from below the bearing holder. See Figure 6.47. using a 1/2” wrench, with no disassembly beyond removing the cutting deck.
  • Page 79 CVT Drive and brake system Disconnect the light extension spring that Remove the nut and bolt that hold the belt ten- returns the bracket and pulley to the relaxed sioner pulley bracket to the frame using a pair of position when the drive pedal is released. 9/16”...
  • Page 80 CVT Drive and brake system On the bench, the flat-sheave idler pulley, and • When installed, the spacers fit against the flat the spacers used to position it can be lifted off of side of the flat sheave idler pulley. the pulley bracket.

  • Page 81: Drive Belt Replacement

    CVT Drive and brake system Drive belt replacement Remove upper (rear) drive belt: CAUTION: The battery will be removed in this Release the lateral spring that provides procedure. Review the Operator’s Manual and force for the tension idler pulley. Chapter 7: Electrical Systems for important See Figure 6.59.
  • Page 82 CVT Drive and brake system Lift the pulley far enough to allow the belt Remove the lower (front) drive belt: to clear the belt keepers. See Figure 6.61. Slip the belt off of the two tensioner pul- leys. See Figure 6.63. Tension idler pulley Rear drive belt Figure 6.61...

  • Page 83: Manual Pto

    CVT Drive and brake system Remove the belt from the engine pulley. Electric PTO Manual PTO A. Remove the belt keeper near the crank- shaft using a 1/2” wrench. Loosen the crankshaft pulley using a 5/8” wrench. • One bolt holds the belt keeper to the frame, to the left side of the engine.
  • Page 84 CVT Drive and brake system C. Remove the bolt that holds the PTO clutch E. Slide the pulley off of the engine crankshaft. to the engine crankshaft using a 5/8” The belt will clear the belt keepers as the wrench. See Figure 6.69. pulley comes down.

  • Page 85: Transaxle Removal And Replacement

    CVT Drive and brake system Belt installation notes: Transaxle removal and replacement • Install only correct OEM belts. CAUTION: The battery will be removed in this Incorrect belts may cause problems that effect procedure. Review the Operator’s Manual and the performance and/or safety of the tractor. the Electrical chapter of this manual for impor- tant safety information about handling batteries •...
  • Page 86 CVT Drive and brake system Loosen, but do not remove the wheel bolts (Dou- Disconnect the forward-neutral-reverse gear ble-D axles) or lug nuts, using a 1/2” wrench or a selector rod from the transmission by removing 3/4” wrench, respectively. the hair pin clip. See Figure 6.78. Unbolt the variable speed pulley bracket from f-n-r selector rod the transmission using a 3/8”...
  • Page 87 CVT Drive and brake system Remove the torque bracket bolts using a 1/2” Carefully lower the transaxle out of the tractor. wrench. See Figure 6.80. See Figure 6.82. Torque bracket bolts Figure 6.82 Figure 6.80 Take the nuts off of the T-bolts that hold the tran- Move the transaxle forward to make some slack saxle to the frame using a 1/2”...

  • Page 88: Transaxle Repair

    CVT Drive and brake system Transaxle repair NOTE: The brake spring has a tighter hook on Assess the damage from the outside; the brake arm end than on the brake rod end. It See Figure 6.85. is much easier to disconnect the spring from the If the tractor is within the warranty period, rod.
  • Page 89 CVT Drive and brake system Slide the shift-shaft pillow block off of the shift Disassemble the brake: shaft. See Figure 6.86. Unhook and remove the brake spring. See Figure 6.88. Shift shaft Pillow block Figure 6.86 Figure 6.88 Remove the detent screw using a 1/4” allen wrench.
  • Page 90 CVT Drive and brake system Slip the brake rotor off of the brake shaft Remove the 13 remaining perimeter screws that (splined end of bevel gear shaft). hold the upper transaxle housing to the lower See Figure 6.90. transaxle housing using a 3/8” wrench. Separate the two housings.
  • Page 91 If it is not something that was done wrong at the fac- tory, the problem is not warrantable. NOTE: Cub Cadet does not have a part number for water, and it is not installed at the factory. Teeth splines Figure 6.96...
  • Page 92 CVT Drive and brake system Check the interior of the transaxle housings. Inspect the pinion gear and input shaft assem- bly. See Figure 6.98. 14a. If there is heavy gear-tooth damage on the ring gear of bevel gears, there is likely to 15a.
  • Page 93 CVT Drive and brake system 16b. Use a screwdriver to pry-off the E-ring. 16d. Pull the pinion shaft out of the housing. See Figure 6.100. See Figure 6.102. Input shaft Needle E-ring bearings Figure 6.102 Figure 6.100 16c. Remove the shim washers. 16e.
  • Page 94 CVT Drive and brake system If repair is feasible, proceed by the following steps: 19c. Re-install the shims in their original loca- tions on the bevel gear shaft. Assemble the pinion gear: 19d. Smear some Durina grease on the sur- 18a.
  • Page 95 CVT Drive and brake system Install the axle and differential assembly: Press the differential and the reverse gears as close together as they will go while remaining 20a. Check notes, markings, or witness marks properly seated in the housing. on the axle shafts to confirm the correct orientation.
  • Page 96 CVT Drive and brake system Remove the top of the housing, and adjust the 35c. Install the brake rotor, with the flat side fac- bevel shaft gear shims as necessary, then re- ing the transaxle housing. check. See Figure 6.110. NOTE: The back-lash in the input shaft is a func- tion of the amount of play between the pinion gear and the bevel gear it is driving.
  • Page 97 CVT Drive and brake system 35g. Re-hook the brake spring to the brake arm Re-install the shift rod pillow block. Table 1: Give the transaxle a final spin-test before instal- lation. Specification U.S. Metric Pinion end play .010”-.015” .25-.38mm Pinion run-out .002”-.010”...
  • Page 98 CVT Drive and brake system...

  • Page 99: Chapter 7: Electrical System

    It is still important to be familiar with the workings Components of the individual components of the electrical The 900 series tractor uses a similar REV-TEC mow in system, but some of them can now be checked reverse electrical system to the older Cub Cadet 1000 from a central point on the tractor.

  • Page 100: Key Switch

    ELECTRICAL SYSTEM Key switch • M is connected to the magneto by a yellow wire, G is connected to ground by a green wire, and The Key Switch is similar to those used in a variety of A1 is connected to the after fire solenoid. MTD applications since 1999.
  • Page 101 ELECTRICAL SYSTEM • Symptom-No crank and no starter solenoid • Symptom-After fire solenoid does not work: click: Power is not getting to the trigger spade on engine starts and dies: The after fire solenoid is the starter solenoid. Test for proper battery volt- powered directly by the red wire from the B ter- age.
  • Page 102 ELECTRICAL SYSTEM RMC module • When the RMC module is armed and turned- on: The tractor will operate identically to when The RMC Module is in the same housing as the key the module is disarmed, except that the operator switch, and is not available separately.

  • Page 103: Rmc Module Plug Test (Electric Pto)

    ELECTRICAL SYSTEM To re-arm and turn the module ON: RMC module plug test (electric PTO) If the key is in REVERSE CAUTION MODE Disconnect the molded 8-pin plug from the RMC position, it must be turned to another position module. See Figure 7.5. (Normal Run), then returned to REVERSE CAU- TION MODE.
  • Page 104 ELECTRICAL SYSTEM Top left middle square-shape: Yellow wire with Lack of continuity to ground would indicate: Black trace: • A broken or disconnected wire leading to • Behavior: Should show DC power with the key the reverse safety switch • A switch that is not closing because of •...

  • Page 105: Rmc Module Plug Test (Manual Pto)

    ELECTRICAL SYSTEM • Interpretation: If the purple wire fails to reach a RMC module plug test (manual PTO) ground path when the key switch is in the Disconnect the molded 8-pin plug from the RMC REVERSE CAUTION MODE position, the RMC module.
  • Page 106 ELECTRICAL SYSTEM Top left rounded-shape: Yellow wire • Interpretation: If this ground path is not good, there will probably be other ground-related • Behavior: When the terminal is probed (yellow issues with the tractor: slow starter motor, slow wire), there should be continuity to ground when battery charge, dim lights.

  • Page 107: Electric Pto Switch

    ELECTRICAL SYSTEM • Circuitry: When the key switch is in the Electric PTO switch REVERSE CAUTION MODE position, a ground Understanding the electric PTO switch path is established by connecting terminal A2 to terminal L within the key switch. The white wire •...

  • Page 108: Pto Relay

    ELECTRICAL SYSTEM PTO relay PTO switch (manual PTO) The PTO relay is located on the main harness, under- • The manual PTO switch is mounted on the right neath the electric PTO switch. See Figure 7.10. side of the seat box section of the frame. See Figure 7.11.

  • Page 109: Brake Switch (Manual Pto)

    ELECTRICAL SYSTEM Brake switch (manual PTO) To access the brake switch: • The brake switch is mounted on the top side of Remove the deck by following the steps the frame, on the left side behind the dash. described in Chapter 8: Cutting Decks and Lift Shaft.

  • Page 110: Park Brake Switch

    ELECTRICAL SYSTEM Brake switch (electric PTO) Park brake switch The brake switch is mounted on the top side of the The park brake switch is only used on tractors that are frame, on the left side behind the dash. equipped with a manual PTO. The park brake switch is See Figure 7.15.

  • Page 111: Reverse Safety Switch

    ELECTRICAL SYSTEM Reverse Safety Switch Hyrdostatic transmissions The Reverse Safety Switch is a simple metal contact Tractors equipped with a hydrostatic transmission have tang switch. the reverse switch mounted on the transmission, next to the selector plate. See Figure 7.18. CVT transmissions Selector plate Tractors that have the CVT transmissions have the...

  • Page 112: Seat Safety Switch

    ELECTRICAL SYSTEM Seat Safety Switch Starter solenoid The Seat Safety Switch is a double pole single throw The starter solenoid is mounted inside the seat box (DPST) switch. Both poles are normally closed and it is section of the frame. See Figure 7.21. located inside the seat.

  • Page 113: Fuse

    ELECTRICAL SYSTEM Lighting circuit Fuse The lighting circuit is hot whenever the engine is run- The 20A fuse is located inside the seat box section of ning. It receives it’s power from the A1 terminal of the the frame, on the left side near the deck lift shaft. key switch.
  • Page 114 Electronics NOTE: Electrical diagnostic procedures and The outdoor power equipment has historically had rela- tools are the same for all Cub Cadet and MTD tively simple electro-mechanical controls. Customer tractors. This section is written in a way to pro- expectations and regulatory demands continue to drive...

  • Page 115: Electrical Environment: Ac Vs. Dc

    ELECTRICAL SYSTEM • Heat and Vibration: Heat and vibration are Electrical environment: AC Vs. DC hard on most mechanical devices. The same is Most modern outdoor power equipment that has an true of electronics. electrical system complex enough to require diagnosis •...
  • Page 116 ELECTRICAL SYSTEM Ohm’s Law: relates voltage, amperage, and Kirchhoff’s current law: resistance • Kirchhoff’s current law deals with nodes. Nodes • Ohm’s law states that voltage is the product of are the junction of two or more wires or the junc- resistance times current.
  • Page 117 ELECTRICAL SYSTEM Kirchhoff’s voltage law: How the system is wired together • Kirchhoff’s voltage law deals with voltage drops. The Rules: All circuits have some basic rules that A voltage drop is the amount of voltage used up must be followed: or “dropped”...

  • Page 118: Types Of Circuits

    ELECTRICAL SYSTEM Types of circuits Series/parallel There are three ways a circuit can be wired: • Series/parallel circuits have some sections wired in series and some in parallel. See Figure 7.30. • Series • Parallel Lamp • Series/parallel Battery Series Lamp •...

  • Page 119: Increased Resistance

    ELECTRICAL SYSTEM Increased resistance Digital Multi-meter • Increased resistance is, as the name implies, an • A DMM is the most useful tool to trouble-shoot increase in resistance. any electrical system. There is an amazing vari- ety of DMMs on the market. Some are very •...

  • Page 120: Test Lights (High Impedance)

    See Figure 7.32. three places to the left of its location for plain Ω NOTE: Do not use a test light on a 900 series “K” is Kilo-Ohms (1,000 Ω), a less sensitive scale tractor. It can damage the RMC module.

  • Page 121: Ammeters And Specialized Charging System Testers

    ELECTRICAL SYSTEM • Some high impedance test lights are capable of • There are two primary reasons to measure indicating whether the current being sampled is amperage: AC or DC. To check the out-put of a charging system Battery Jumper Cables or battery.
  • Page 122 ELECTRICAL SYSTEM • Kohler makes a proprietary Rectifier/Regulator Testing the charging system tester (Kohler Part Number 25 761 20 and the Quick and dirty test: check voltage across the battery up-dated version: 25 761 20-S). This tester posts using a DMM set to read D.C. voltage with the works on Kohler regulator / rectifiers and the engine turned-off.
  • Page 123 ELECTRICAL SYSTEM Check the stator for resistance across the Interpretation: If the ohm meter indicates AC leads. The resistance should fall no continuity between the two stator leads, between the valves specified by the engine there is a fault in the stator windings. If the manufacturer.

  • Page 124: Batteries

    ELECTRICAL SYSTEM Batteries • Some charging systems do not work if the sys- tem voltage falls below 6V. It takes a certain Precautions: See Figure 7.39. amount of voltage to excite the fields in the alter- CAUTION: Batteries produce flammable and nator.
  • Page 125 ELECTRICAL SYSTEM Checking battery condition: There are three Give the battery at least ten minutes for the things to do when testing a battery: electrolyte to stabilize after charging the battery or adding water to the cells. • Visual inspection Measure the temperature of the electrolyte •...

  • Page 126: Battery Testers

    ELECTRICAL SYSTEM Battery Testers: There are two major ways to check a battery’s opera- NOTE: CCA stands for cold cranking amps. The tion : rating should be on the battery for aftermarket batteries. For OEM batteries, contact the manu- • Load test that checks the out-put of the battery facturer for the CCA rating.
  • Page 127 ELECTRICAL SYSTEM Fixed load testing Capacitance testing Fixed load testers (sometimes called toasters) are There are several brands of capacitance battery testers inexpensive load testers found at any auto parts store. presently on the market. Capacitance battery testers See Figure 7.42. use the battery being tested as their power source.
  • Page 128 ELECTRICAL SYSTEM Battery discharge test If the battery is being checked indepen- dently of the equipment it powers, mea- Occasionally a battery will discharge while sitting sure and note the battery voltage while it is unused. To test for a battery that is “leaking” voltage: disconnected, over a three-day period.
  • Page 129 ELECTRICAL SYSTEM Take a methodical approach to finding the Starting with a fully charged battery and bat- problem. As a rule of thumb, start at one tery cable connections that are clean and end of the circuit and work to the other. tight, measure the battery voltage.

  • Page 130: Voltage Drop Test

    ELECTRICAL SYSTEM Voltage Drop Test The voltage that shows-up on the meter is the voltage that is being used to pass current To review: through a resistance in the circuit. • Ohm’s law states that it takes voltage to push Voltage drop on a good circuit should be less current through a resistance.
  • Page 131 ELECTRICAL SYSTEM With the starter engaged, this machine exhibited Voltage drop on a good circuit should be less a voltage-drop reading of 0.312 volts, indicating than 0.1 volts. A voltage drop reading on the a poor ground connection. meter of greater than 0.2 volts indicates a fairly substantial problem that demands attention.

  • Page 132: Testing Switches

    Test each pair of terminals for continuity in all modes of switch operation: at-rest, and actu- ated. • Many switches on Cub Cadet equipment are typed by their at-rest state: Normally Open, Nor- mally Closed, Common. • Normally Open (N.O.) contacts do not complete a circuit when the switch is at-rest (plunger extended).

  • Page 133: Relay

    ELECTRICAL SYSTEM Relay To test a relay: Most of the relays used by MTD or Cub Cadet have Test for continuity between the common and the five pins. See Figure 7.53. NC terminals using a DMM. Test for continuity between the common and the Spade 3 Common NO terminals using a DMM.

  • Page 134: Diodes

    ELECTRICAL SYSTEM Diodes Attach the negative lead of the DVOM to the side of the diode with a band on it. What is a diode? A diode acts like a one way valve, allowing current to flow in only one direction. Place the positive lead on the other side of the See Figure 7.54.

  • Page 135: Schematics

    ELECTRICAL SYSTEM Schematics...
  • Page 136 ELECTRICAL SYSTEM...

  • Page 137: Chapter 8: Cutting Decks And Lift Shaft

    CHAPTER 8: CUTTING DECKS AND LIFT SHAFT Cutting decks Deck removal The 900 series comes with a variety of deck options. Place the tractor on firm level ground and set the The procedure to remove the deck is the same for all.
  • Page 138 Cutting Decks And Lift Shaft B. Remove the nut that secure the belt guard F. Unhook the spring end of the PTO cable to the right side of the frame using a 1/2” from the idler pulley bracket. wrench. See Figure 8.2. See Figure 8.4.
  • Page 139 Cutting Decks And Lift Shaft Raise the deck lift lever to the highest setting. NOTE: The 50” and 54” decks will have an addi- Slide the deck out to the right, from underneath tion stabilizer link on the back of the deck. Dis- the tractor.

  • Page 140: Cleaning The Deck

    The cutting deck on the 900 series tractor is mounted the debris from building up on the underside of with a slight rake, meaning that the front of the deck is the deck.
  • Page 141 NOTE: The 900 series blades have a star cen- ter. The star must seat on the raised star on the Remove the blade nuts using an impact wrench bottom of the spindle shaft with the fins of the and a 15/16”...

  • Page 142: Spindles

    Cutting Decks And Lift Shaft Spindles To access the outer spindles, remove the belt covers. See Figure 8.11. The spindles are a complete unit. The only replaceable part is the pulley. The spindles are equipped with a belt cover grease fitting that should get one squirt of grease after every use of the deck wash system or every 10 hours of use.

  • Page 143: Pto Belt

    Figure 8.13 CAUTION: Cub Cadet belts are design to fit our Lift the spindle out of the deck shell. equipment and are not standard lengths. Use of...
  • Page 144 Cutting Decks And Lift Shaft Slide the belt off of the pulleys. Route the new belt around the pulleys. NOTE: Some decks have belt guides on the • For a 38” deck, See Figure 8.16. idler pulleys. Loosen the nut and bolt that secure the idler pulley enough so that the PTO can slip out from in between the guide and the pulley.

  • Page 145: Timing Belt

    Cutting Decks And Lift Shaft • For a 46” “H” deck, See Figure 8.19. Timing belt To service the timing belt: Remove the deck as describe at the begining of this chapter. Remove the PTO belt by following the steps described in the previous section of this manual.
  • Page 146 Cutting Decks And Lift Shaft Remove the timing belt idler spring. To install the timing belt turn the blades 90 See Figure 8.23. apart. See Figure 8.25. Timing belt idler spring Figure 8.25 Figure 8.23 Work the belt off of the pulleys. NOTE: Failure to time the blades will result in the blades hitting each other.

  • Page 147: Leveling The Deck

    Retighten the bolt on the left deck hanger bracket when proper adjustment is achieved. NOTE: Use of Cub Cadet deck leveling gauge, part number 490-900-0041, will make measuring Front To Rear Leveling the blade tip height easier.

  • Page 148: Deck Wheel Adjustment

    Cutting Decks And Lift Shaft Measure the distance from the front of the blade Deck Wheel Adjustment tip to the ground and the rear of the blade tip to The cutting decks are of a “floating” design. This the ground. means that they are suspended above the ground.

  • Page 149: Deck Lift Shaft Assembly Bushings

    Cutting Decks And Lift Shaft Deck lift shaft assembly bushings Deck lift shaft assembly removal/replacement The deck lift shaft assembly bushings for the 900 Remove the deck by following the steps series tractor can be replaced with out removing the described at the beginning of this chapter.

  • Page 150: Deck Lift Links And Cables

    There are two sets of lift links used on the 900 series tractors. The links used on the 38” and 42” decks have a left and a right lift link. The links used on the 46”, 50”...
  • Page 151 Cutting Decks And Lift Shaft Remove the four screws the fasten that right Push the deck lift arm as far forward as it will go. side fender trim to the fender using a 3/8” Remove the hair pin clip that secures the lift wrench.
  • Page 152 Cutting Decks And Lift Shaft...

  • Page 153: Chapter 9: Maintenance Intervals

    CHAPTER 9: MAINTENANCE INTERVALS Lubrication The spark plug(s) To help keep the 900 series in proper running order it is The spark plug(s) should be checked, cleaned and re- recommended the following lubrication intervals be gapped on a monthly basis or every 100 hours of use.

  • Page 154: Air Filter And Foam Pre Cleaner

    MAINTENANCE INTERVALS 1b. Remove the spark plug(s) with the appropri- Air filter and foam pre cleaner ate spark plug socket. See Figure 9.2. A dirty air filter and/or foam pre cleaner can reduce engine power, increase fuel consumption and make spark plug socket starting more difficult.

  • Page 155: Fuel System

    Exposure to air causes fuel to go bad quickly, leaving gum and varnish deposits. Oil filter Fuel used in Cub Cadet outdoor power equipment To replace the oil filter: should be no more than 30 days old. Because it may...

  • Page 156: Fuel Filter

    Figure 9.5 IMPORTANT: The 900 series tractor uses low permeation fuel line to meet EPA guidelines. Gently pull down on the pedal shaft.

  • Page 157: Hydro-Gear Appendix

    APPENDIX HYDRO-GEAR APPENDIX This Hydro-Gear manual is reprinted, in its entirety with permission from Hydro-Gear.
  • Page 158 APPENDIX...
  • Page 159 ® We set the wheels in motion. 310-0510/-0610/-0710 Integrated Hydrostatic Transaxle Service and Repair Manual BLN-51260 April 2008...
  • Page 160 Table of Contents Section Page Foreword............................1 Section 1 Description and Operation ..................2 Introduction ................................2 General Description ..............................2 Hydraulic Schematic ..............................3 External Features 310-0510 .............................4 Model Recognition ..............................5 Technical Specifications ............................6 Product Identification ..............................6 Section 2 Safety ..........................7 Personal Safety.................................7 Tool Safety ................................7 Work Area Safety..............................7...

  • Page 161: Foreword

    FOREWORD ® Headquartered in Sullivan, Illinois, Hydro-Gear Repair procedures require that the transaxle is a world leader in the design, manufacture, unit be removed from the vehicle. and service of quality hydrostatic transaxles for This is not a certification, test or study guide for the lawn and garden industry.

  • Page 162: Section 1 Description And Operation

    SECTION 1. DESCRIPTION AND OPERATION pump and thus reverses the direction of the INTRODUCTION motor output rotation. The pump and motor are The purpose of this manual is to provide of the axial piston design and utilize spherical ® information useful in servicing the Hydro-Gear nosed pistons which are held against a thrust Integrated Hydrostatic Transaxle (IHT).

  • Page 163: Hydraulic Schematic

    INPUT SHAFT VARIABLE SWASH PLATE CYLINDER BLOCK ASSEMBLY CYLINDER BLOCK ASSEMBLY 10 CC VARIABLE 10 CC FIXED FIXED DISPLACEMENT ANGLE DISPLACEMENT PUMP DISPLACEMENT MOTOR CHECK VALVE CHECK VALVE FILTER ASSEMBLY BYPASS ACTUATOR RESERVOIR TRANSAXLE HOUSING DIFFERENTIAL ASSEMBLY Figure 2. 310-0510 Hydraulic Flow Illustration designed into the product for lubrication HYDRAULIC SCHEMATIC purposes (around pistons, under the rotating...

  • Page 164: External Features 310-0510

    EXTERNAL FEATURES 310-0510 FRICTION PACK BELT KEEPER CONTROL ARM BRAKE ARM BRAKE DISC ADJUSTING PUCK BYPASS ARM Return to Neutral Option Friction Pack Option FILL PORT AXLE CLIP AXLE CLIP EXPANSION TANK INPUT SHAFT AXLE SHAFT AXLE CLIP AXLE CLIP 310-0510 IHT...

  • Page 165: Model Recognition

    MODEL RECOGNITION 618-0319 166768 104-1760 173839 036932 618-0389A 310-0510 IHT...

  • Page 166: Technical Specifications

    TECHNICAL SPECIFICATIONS Technical specifications for the 310-0510 IHT are listed in Table 1. Table 1. 310-0510 Technical Specifications Overall Transaxle Reduction Axle Shaft Options 22.15:1 Type: Keyed / Double “D” Diameter: 0.75 inch; 19.05 mm Input Speeds Maximum: 3000 RPM Brake Type Minimum: 1800 RPM Disc...

  • Page 167: Section 2 Safety

    SECTION 2. SAFETY Wear appropriate clothing. Loose or hanging This symbol points out important safety clothing or jewelry can be hazardous. Use the instructions which, if not followed, could appropriate safety equipment, such as eye and endanger the personal safety and/or property of hearing protection, and safety-toe and slip- yourself and others.

  • Page 168: Section 3 Troubleshooting

    SECTION 3. TROUBLESHOOTING In many cases problems with the 310-0510 are WARNING not related to a defective transaxle, but are caused slipping drive belts, partially Do not attempt any servicing or adjust- engaged bypass valves, loose ments with engine running. damaged control linkages.

  • Page 169: Section 4 Service And Maintenance

    SECTION 4. SERVICE AND MAINTENANCE NOTE: Any servicing dealer attempting mentioned in the repair section of this manual a warranty repair must have prior must be performed after the unit has been approval before conducting maintenance removed from the vehicle. ®...

  • Page 170: Fluid Change

    FLUID CHANGE 8. Install the tank support bracket and self tap- FLUID CHANGE PROCEDURE ping bolt making sure not to cross thread This transaxle is factory filled, sealed and does the bolt. Torque the bolt to the lower value not require oil maintenance. However, in the of the torque specification listed in Table 5.

  • Page 171: Purging Procedures

    PURGING PROCEDURES Due to the effects air has on efficiency in The following procedures should be performed hydrostatic drive applications, it is critical that it with the vehicle drive wheels off the ground, be purged from the system. then repeated under normal operating condi- tions.

  • Page 172: Return To Neutral Setting

    RETURN TO NEUTRAL SETTING (FOOT CONTROL) WARNING WARNING POTENTIAL FOR SERIOUS INJURY Do not attempt any adjustments with the engine running. Use extreme caution while Certain procedures require the vehicle inspecting all vehicle linkage! engine to be operated and the vehicle to be raised off the ground.

  • Page 173: Brake Maintenance

    BRAKE MAINTENANCE BRAKE SETTING FRICTION PACK ADJUSTMENT 1. Remove the brake arm bias spring, and The friction pack dampens or holds the opera- then the cotter pin securing the brake castle tor control lever in its desired position. nut. Adjustment for the amount of drag or holding 2.

  • Page 174: Section 5 Repair

    SECTION 5. REPAIR IMPORTANT: When internal repair is per- HOW TO USE THIS SECTION formed on the 310-0510 IHT, the filter assem- Each subassembly illustrated in this section is bly must be replaced. illustrated by an exploded view showing the TRANSAXLE REMOVAL parts involved.

  • Page 175: Tools And Torques

    TOOLS AND TORQUES Table 4. Required Tools Miscellaneous Sockets 310-0510 Service & Repair Manual 1/2"- 3/8" Adapter Flat Blade Screw Driver (2) 1/2" Deep Torque Wrench 7/16" Deep Air Impact Wrench 9/16" Deep Rubber Mallet 3/4" Deep Breaker Bar 7/8" Side Cutters/Snips 10 mm Pliers...

  • Page 176: Brake Assembly And Bypass Arm

    BRAKE ASSEMBLY AND BYPASS ARM Refer to Figure 8. INSPECTION DISASSEMBLY 1. Inspect the brake arm bias spring (66), castle nut (69), washer (73), brake arm (68), 1. Remove the brake arm bias spring (66). actuating pins (62), spring (71), brake yoke Note the orientation of the spring for proper screws (63/64), brake yoke (58), pucks (60), reassembly.

  • Page 177: Control Arm And Friction Pack

    CONTROL ARM AND FRICTION PACK Refer to Figure 9. 3. Inspect the inner wedge puck (90). 4. Inspect the friction pack stud (76) for wear DISASSEMBLY or damage. 1. Remove the brake assembly. See page 16. ASSEMBLY 2. Loosen and remove the friction pack lock nut (80), flat washer (73), spring (78), 1.

  • Page 178: Seal Kit Replacement

    SEAL KIT REPLACEMENT Before disassembly, wipe the unit free of any input shaft. debris to avoid contamination. 2. The seal (13) can be replaced by following Refer to Figure 10. steps 2-6 of the procedure used to replace the axle seals. Axle Seal Trunnion Seal 1.

  • Page 179: Side Housing

    SIDE HOUSING Refer to Figure 11. ASSEMBLY 1. Apply a bead of sealant around the perime- DISASSEMBLY ter of the side housing face. See sealant 1. Remove the brake assembly and bypass pattern on page 28. arm. See page 16. 2.

  • Page 180: Axle Shaft, Differential And Reduction Gears

    AXLE SHAFT, DIFFERENTIAL & REDUCTION GEARS Refer to Figure 12. 3. Inspect the bull gear for wear or damage. 4. Inspect the reduction gears, shaft and DISASSEMBLY washers. 1. Remove the brake assembly and bypass 5. Inspect the housing bores. arm.

  • Page 181: Motor Shaft And Bypass Rod

    MOTOR SHAFT AND BYPASS ROD Refer to Figure 13. 2. Inspect the bypass rod (48) for wear or damage. DISASSEMBLY ASSEMBLY 1. Remove the brake assembly and bypass arm. See page 16. 1. Insert the bypass rod’s (48) short end into the housing while aligning the rod’s flat with 2.

  • Page 182: Input Shaft

    INPUT SHAFT Refer to Figure 14. ASSEMBLY DISASSEMBLY 1. Install the block thrust washer (56) and spring (55) onto the input shaft (9). 1. Remove the brake assembly and bypass 2. Ensure that the pump block is aligned con- arm. See page 16. centrically with the center section running 2.

  • Page 183: Hydraulic Components

    HYDRAULIC COMPONENTS Refer to Figures 15-24. 12. Reassemble the pistons, springs and seats into the cylinder block and set aside. DISASSEMBLY 13. (See Fig. 18) Remove the thrust bearing (Pump Block) assembly (19) from the swashplate (4). 1. Remove the brake assembly and bypass (Center Section/Filter) arm.
  • Page 184 HYDRAULIC COMPONENTS seats for excessive wear or damage. (Center Section) NOTE: Piston seats may be held in place 3. (See Fig. 21) Install the new filter base (46) in the piston by residual oil. onto the center section (3). 22. Reassemble the pistons, springs and seats 4.
  • Page 185 HYDRAULIC COMPONENTS 13. Tighten center section mounting screws (44) to the proper torque. Refer to Table 5. (Swashplate/Pump Block) 14. (See Fig. 18) Install the pump thrust bear- ing (19) in the trunnion machined swash- plate (4). NOTE: Place the thin race of the bearing towards the swashplate.
  • Page 186 HYDRAULIC COMPONENTS Axle Horn Figure 19 Figure 22 Figure 20 Figure 23 Short Shaft Post Figure 24. Swashplate/Pump Block Assembly Figure 21 310-0510 IHT...

  • Page 187: Transaxle Installation

    ASSEMBLY AFTER A COMPLETE TRANSAXLE INSTALLATION TEARDOWN Use the following procedure to complete the installation of the transaxle on the vehicle. If the unit has been torn down completely, the following summary identifies the assembly pro- 1. Install and secure the transaxle on the cedures necessary to completely assemble the vehicle according to the instructions in the unit.

  • Page 188: Sealant Application

    SEALANT APPLICATION NOTE: Prior to applying the new sealant, the old sealant must be removed from all surfaces. A small consistent bead of the sealant around the housing face will be sufficient. Use sparingly. The illustration below indicates the correct areas.

  • Page 189: Description

    310-0710 INTEGRATED HYDROSTATIC TRANSAXLE DESCRIPTION TRANSAXLE REMOVAL The 310-0710 transaxle is an upgraded It is necessary to remove the 310-0710 from 310-0510 unit with different axle shafts, pump the vehicle before performing the repair proce- cylinder block assembly, center section and dures presented in the repair section.
  • Page 190 310-0710 EXPLODED VIEW 310-0510 IHT...
  • Page 191 310-0710 ITEMS LIST DESCRIPTION DESCRIPTION Main Housing, Assembly, Black Compression Spring Brake Anti-Drag Main Housing, Black Washer, Flat .51 x 1.00 x .03 Bushing .865 x .985 x .790 Washer, Flat .34 x .88 x .06 Side Housing, Assembly, Black Oil Seal .625 X 1.0 X .25 Side Housing, Black Check Plug Assy, .027, Washer, “B”...
  • Page 192 310-0610 EXPLODED VIEW 310-0510 IHT...
  • Page 193 310-0610 ITEMS LIST DESCRIPTION DESCRIPTION Main Housing, Assembly Spacer .26 x .57 x .87 Main Housing Spring, Brake Arm Bias Bushing .865 x .985 x .790 Arm, Brake Pin, Headless Standard Nut, Castle 5/16-24 Side Housing, Assembly Cotter Pin 3/32 X 3/4 Side Housing Compression Spring Brake Anti-Drag Bushing .865 x .985 x .790...
  • Page 194 310-0510 EXPLODED VIEW 310-0510 IHT...
  • Page 195 310-0510 ITEMS LIST DESCRIPTION DESCRIPTION Main Housing, Assembly Nut, Castle 5/16-24 Main Housing, Machined Cotter Pin 3/32 x 3/4 Bushing .865 x .985 x .790 Compression Spring, Brake, Anti-Drag Pin, Standard Headless Washer, HT .51 x 1.0 x .03 Side Housing, Assembly Flat - Washer .34 x .88 x.06 Side Housing, Machined Oil Seal .625 x 1.0 x .25...

  • Page 196: Glossary Of Terms

    GLOSSARY OF TERMS Axial Piston: Type of design for hydraulic motors and pumps in which the pistons are arranged parallel with the spindle (input or output shaft). Bantam Duty: A descriptive term relating to the product capacity (meaning: light duty). Bypass Valve: A valve whose primary function is to open a path for the fluid to bypass the motor or pump.
  • Page 197 GLOSSARY OF TERMS Hydrostatic Transaxle: A multi-component assembly including a gear case and a hydrostatic transmission. Hydrostatic Transmission: The combination of a hydraulic pump and motor in one housing to form a device for the control and transference of power. Inlet Line: A supply line to the pump.
  • Page 198 © 2008 HYDRO-GEAR Printed in U.S.A. Rev. P1 310-0510 IHT...

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