Cub Cadet I Series Professional Shop Manual
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Cub Cadet I Series Professional Shop Manual

Riding tractors
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Professional Shop Manual
I 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.
© Copyright 2009 MTD Products Inc. All Rights Reserved
MTD Products Inc. - Product Training and Education Department
FORM NUMBER - 769-03231A
08/2009

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  • Page 1 Professional Shop Manual I 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

    Table of Contents Chapter 1: Introduction ......................1 Professional Shop Manual intent ..........1 Description of the I-series .
  • Page 4 Rebuilding the steering gear box ......... . . 59 Wear block adjustment .
  • Page 5 Chapter 8: Cutting Decks and lift shaft ................143 Cleaning the deck ............144 To clean the deck while it is removed.

  • Page 7: Chapter 1: Introduction

    This Professional Shop Manual covers the I-series • In no event shall MTD or Cub Cadet be liable for tractor more specifically, and in greater depth than the poor text interpretation or poor execution of the original Shop Handbook.

  • Page 8: Description Of The I-Series

    ...A.......sales level while using a traditional steering wheel..F.....engine code The I-series comes with 42”, 46” and 50” deck options. The I-series tractors also have the Cub Cadet ..9....frame Rev-Tek system...B....drive system The I-series tractor can be equipped with two ....K....hood style...

  • Page 9: Chapter 2: Engine Related Parts

    CHAPTER 2: ENGINE RELATED PARTS This chapter will cover the engine accessories that Remove the hood pivot brackets by removing are manufactured by Cub Cadet. the two screws that secure each one in place. See Figure 2.2. IMPORTANT: The engine is manufactured by Kohler.
  • Page 10 ENGINE RELATED PARTS With the muffler on a work bench, remove the The muffler, muffler cover and the muffler four screws that fasten the muffler to the muffler bracket can now be separated. See Figure 2.6. bracket. See Figure 2.4. Muffler brackets Heat shield Remove these...

  • Page 11: Exhaust Pipes

    ENGINE RELATED PARTS Exhaust pipes Fuel tank removal/replacement The exhaust pipes are manufactured by Cub Remove/replace the fuel tank by following these steps: Cadet. To remove/replace the exhaust pipes: Gasoline and it vapors are Remove the muffler following the steps ! CAUTION ! CAUTION extremely flammable.
  • Page 12 ENGINE RELATED PARTS Remove the two screws and two nuts that fasten the seat box cover. See Figure 2.10. Remove these screws Remove these screws Seat box Figure 2.10 Remove the seat box cover. Clamp the fuel line. See Figure 2.11. Fuel line clamp Fuel line Figure 2.11...

  • Page 13: Chapter 3: Brakes

    BRAKES CHAPTER 3: BRAKES Brake system description For the IVT transmission: The I-series tractors have two braking systems The IVT transmission has two drop axles. On each available based on which transmission is used. drop axle there is an external drum brake. HydroGear transmissions use a disc type brakes.

  • Page 14: Brake Adjustment - Hydrogear Transmissions

    BRAKES Brake adjustment - HydroGear transmissions Back the castle nut off a few turns using a 9/16” wrench. NOTE: Whenever performing a brake adjust- ment, inspect the brake components for signs of NOTE: Even if the brakes are set to the correct wear or damage.

  • Page 15: Brake Adjustment - Ivt Transmissions

    BRAKES Brake adjustment - IVT transmissions Brake puck/rotor replacement - HydroGear Trans- missions To adjust the brakes on IVT transmission: On HydroGear transmissions, the brake pucks are Lift the rear of the tractor and safely support it a wearing part that will need to be serviced from time to with a pair of jack stands.
  • Page 16 BRAKES Loosen the rear mounting bolt. See Figure 3.8. Slide the brake rotor off to reach the inboard brake puck. See Figure 3.10. Remove this bolt Inboard brake puck Loosen this bolt Figure 3.8 Figure 3.10 Remove the front mounting bolt, allowing the caliper to swing down.
  • Page 17 BRAKES Slide the brake pins into the caliper. Mount the brake caliper to the transmission. Apply a small amount of releasable thread lock- Place the backing plate in the caliper. ing compound such as Loctite® 242 (blue) to the Place a new puck into the caliper. mounting bolts and tighten to a torque of 80 - See Figure 3.12.

  • Page 18: Brake Shoes/Drum - Ivt Transmissions

    BRAKES Brake shoes/drum - IVT transmissions Disconnect the brake shoe spring. See Figure 3.14. On IVT transmissions, the brake shoes and drums are the wearing parts that will need to be serviced from time to time. If a tractor is operated with the parking brake dragging, the shoes will wear out rapidly and the brake drum will develop hot spots.

  • Page 19: Brake Cross Shaft Assembly

    BRAKES Remove the snap ring that secures the drum Brake cross shaft assembly with a pair of snap ring pliers. See Figure 3.16. The brake cross shaft assembly for the HydroGear transmissions and the IVT transmissions are not the same. The procedure to service them are the same. The brake cross shaft assembly is supported by two bushings.
  • Page 20 BRAKES Remove the right side bushing first. This will To remove/replace the brake cross shaft assembly: allow the shaft to slide far enough to the left to let Remove the brake pedal by removing the two the other bushing to come out. screws using a 1/2”...
  • Page 21 BRAKES Loosen the shoulder bolt that the parking brake Slide the split bushings out of their pockets in the plate pivots on. See Figure 3.21. sub-frame, then pull them off of the brake cross shaft assembly. See Figure 3.23. Parking brake plate Shoulder bolt Figure 3.21...
  • Page 22 BRAKES...

  • Page 23: Chapter 4: Body/Chassis

    BODY/CHASSIS CHAPTER 4: BODY/CHASSIS The hood Cut the wire tie that secures the headlight har- ness to the hood. See Figure 4.3. The I-series hood uses the same hood pivot sys- tem as the 1000 series for easy removal. Headlight harness To remove the hood: The hood is front-hinged.

  • Page 24: Bumper

    BODY/CHASSIS Bumper Dash Removal The dash for the I-series is easy to remove. There I-series tractors come equipped with a fast attach are a few repair procedures, such as the cam angle bumper. To remove the bumper: adjustment or replacing the steering gearbox, that Remove the two screws, one on each side, that require the dash to be removed.
  • Page 25 BODY/CHASSIS Remove the dash: 2c. Remove the two screws attaching the dash to the dash support. See Figure 4.11. 2a. Disconnect the key switch, module, PTO switch and the hour meter. See Figure 4.9. One on each side Hour meter Module and key switch PTO switch...

  • Page 26: Remove The Fender

    BODY/CHASSIS 2e. Remove the screws at the bottom of the Remove the fender dash, on each side. See Figure 4.13. Remove the dash by following the steps described in the previous section of this chapter. Disconnect the wires to the seat switch. Screw removed NOTE: Tractors built prior to 2008 have two yel- low wires that go to a switch on the side of the...
  • Page 27 BODY/CHASSIS Remove the nuts from the under side of the foot Place the steering wheel on the steering shaft. rests. See Figure 4.16. Turn the wheels to the left and right to allow the fenders to clear the steering arm assembly. See Figure 4.18.
  • Page 28 BODY/CHASSIS...

  • Page 29: Chapter 5A: Drive System - Hydrogear Transmissions

    This will give enough PTO connector clearance to slide the belt off of the engine pul- ley. Cub Cadet belts are designed to fit ! CAUTION ! CAUTION our equipment and are not standard lengths. Use of a non-OEM belt may prevent the de-clutching mechanism from working properly when the brakes are applied.
  • Page 30 DRIVE SYSTEM-HYDROGEAR Slide the engine pulley down far enough to slip Work belt off of the idler pulleys. the belt off of the pulley. See Figure 5A.3. NOTE: It may be necessary to loosen the move- able idler pulley to get the belt to clear the belt guide on the idler bracket.

  • Page 31: Belt Adjustment

    DRIVE SYSTEM-HYDROGEAR Remove the two screws that hold the transmis- Belt adjustment sion links to the shifter plate. See Figure 5A.6. The drive belt is tensioned by a spring loaded moveable idler pulley. When the brakes are applied, Transmission link the drive belt is de-clutched.

  • Page 32: Transmissions

    DRIVE SYSTEM-HYDROGEAR Slide the ferrule out of the idler bracket. Transmissions See Figure 5A.8. The I-series tractor uses two EZT transmissions from Hydro-gear. The transmissions can be removed separately. To remove a transmission: NOTE: The transmission model and serial num- ber tags are located on the frame channel next Washer to the transmission that they refer to.
  • Page 33 DRIVE SYSTEM-HYDROGEAR Remove the two bolts that thread into the cross Remove the two bolts that fasten the transmis- tubes. See Figure 5A.11. sion to the frame. See Figure 5A.13. Reinforcing strap Cross truss Spacer Bolts Figure 5A.11 Figure 5A.13 Support the transmission to prevent it from fall- NOTE: The two transmission bolts pass through ing while the mounting bolts are removed.

  • Page 34: Drive Pedal Shaft

    DRIVE SYSTEM-HYDROGEAR Drive pedal shaft Drive out the two roll pins that secure the drive pedal bracket to the drive pedal shaft. To remove the drive pedal shaft: See Figure 5A.16. Remove the deck as described in chapter 8 Cut- ting Decks and Lift Shaft.

  • Page 35: Chapter 5B: Drive System - Ivt Transmission

    DRIVE SYSTEM-IVT CHAPTER 5B: DRIVE SYSTEM - IVT TRANSMISSION There are two drive systems available for the I- The power from the engine is transferred to the series tractor. One system uses two HydroGear trans- transmission via a belt and pulleys. The power is missions.
  • Page 36 DRIVE SYSTEM-IVT The key to making this work is a special traction fluid that was developed for this transmission. A Trac- NOTE: The RPM numbers used in figures 5B.2, tion fluid is a synthetic transmission fluid designed with 5B.3 and 5B.4 are not the actual measurements properties specifically for transmitting torque between of the disc speeds.
  • Page 37 DRIVE SYSTEM-IVT The output shaft of the T-box drives a sun gear in If the answer is positive, transmission drives in a the center of the planetary gears at the same speed as forward direction. If the answer is negative, the trans- the input discs.

  • Page 38: Drive Belt

    To remove/replace The drop axles and brakes are serviceable and will be the drive belt: covered in later sections of this chapter. Cub Cadet belts are design to fit NOTE: Currently replacement traction fluid is not ! CAUTION ! CAUTION our equipment and are not stan- available for purchase.
  • Page 39 DRIVE SYSTEM-IVT Slide the retainer clip half way out of the damp- Unplug the electric PTO harness. ener end using small flat head screw driver. See Figure 5B.14 See Figure 5B.12 Starter Moveable idler Dampener end PTO connector Retainer clip Figure 5B.14 Figure 5B.12 Unbolt the electric PTO using an impact wrench...
  • Page 40 DRIVE SYSTEM-IVT Slide the engine pulley down far enough to slip Remove the rear wheels. the belt off of the pulley. See Figure 5B.16 Remove the transmission fan. 13a. Reach in through the wheel opening. 13b. Remove the three transmission fan screws using a 5/16”...

  • Page 41: Belt Adjustment

    DRIVE SYSTEM-IVT Slip the belt off of the transmission pulley. Belt adjustment Remove the belt from the tractor. The drive belt is tensioned by a spring loaded moveable idler pulley. When the brakes are applied, Install the belt following the previous steps in the drive belt is de-clutched.

  • Page 42: Transmissions

    DRIVE SYSTEM-IVT Remove the cotter pin and washer from the fer- Transmissions rule. See Figure 5B.22 To remove the transmission: Remove the deck as described in chapter 8 Cut- ting Decks and Lift Shaft. Cotter pin Lift and safely support the rear of the tractor. Remove the dash and fender by following the Ferrule steps described in Chapter 4: Body/Chassis.
  • Page 43 DRIVE SYSTEM-IVT 8a. Remove the hair and clevis pins. Remove front mounting screw on each side of See Figure 5B.25 the tractor using a 1/2” wrench. See Figure 5B.27 drive control link Hair pin clip Front mounting screw Clevis pin Figure 5B.25 Figure 5B.27 8b.

  • Page 44: Drop Axle Assemblies

    DRIVE SYSTEM-IVT If replacing the transmission assembly, remove Drop axle assemblies the transmission fan. The drop axle assemblies on the IVT transmission If only replacing the IVT (center section of the perform three functions: transmission), remove the drop axles by follow- •...

  • Page 45: Rebuilding The Drop Axles

    DRIVE SYSTEM-IVT Remove the four screws that secure the drop Rebuilding the drop axles axle assembly to the IVT, using a 1/2” wrench. Remove the drop axle by following the proce- See Figure 5B.30 dures described in the previous section of this chapter.
  • Page 46 DRIVE SYSTEM-IVT Remove the by-pass lever. Remove the brake shaft assembly. See Figure 5B.36 NOTE: The by-pass lever has a very tight fit on the by-pass fork. It will need to be persuaded off. By-pass fork Remove the eleven housing screws using a 3/8” wrench.
  • Page 47 DRIVE SYSTEM-IVT Separate the spur gear from the brake shaft by removing the retaining ring. See Figure 5B.38 NOTE: When seating the bushings of the brake shaft in the drop axle housing, the tab on the bushings must seat in the notch in the housing. Notch Retaining ring Figure 5B.38...

  • Page 48: Drive Pedal Shafts

    However Cub Cadet It operates the brakes and pulls the drive control links recommends removing the reverse pedal shaft in the forward direction.
  • Page 49 DRIVE SYSTEM-IVT 4c. Rotate the reverse drive pedal shaft out of Disconnect both brake release rods from the the reverse pedal support. main drive pedal shaft by removing the cotter See Figure 5B.45 pins. See Figure 5B.47 Brake release rod Cotter pin reverse drive pedal shaft...
  • Page 50 DRIVE SYSTEM-IVT Remove the hair pin clip, washer and hex bush- Remove the three screws that secure the ing from the right side of the main drive pedal reverse pedal support using a 1/2” wrench. shaft. See Figure 5B.49 See Figure 5B.51 Washer Hex bushing Hair pin clip...
  • Page 51 DRIVE SYSTEM-IVT Swing the rear of the drive pedal shaft support To install the drive shaft assemblies: bracket down. Install the middle hex bushing. Disconnect the steering gear box from the main See Figure 5B.55 shaft by removing the hair pin clip. See Figure 5B.53 Middle hex bushing Steering gearbox...
  • Page 52 DRIVE SYSTEM-IVT Insert the main shaft into the hole for the left hex Slide the drive pedal bracket onto the main bushing by sliding it through the slot. shaft. See Figure 5B.57 NOTE: Do not install the roll pins at this point. Install the reverse pedal support.
  • Page 53 DRIVE SYSTEM-IVT Install the right side brake link onto the brake 16c. Modify the hex bushing by: pedal shaft using a new cotter pin. • Cut or grind the bushing to an overall height See Figure 5B.61 of 1/2” . See Figure 5B.63 Brake link Cotter Figure 5B.61...
  • Page 54 DRIVE SYSTEM-IVT 16e. Slide the reverse drive pedal shaft into the Install the fender by following the steps modified hex bushing while aligning the described in Chapter 4: Body/Chassis. timing marks on the gears of the two Test drive the tractor before returning it to ser- shafts.

  • Page 55: Chapter 6A: Steering - Hydrogear Transmissions

    Cub Cadet parts department. tractor. Remove the dash and fender by following the...
  • Page 56 STEERING-HYDROGEAR Disconnect the transmission link from the right 2c. Raise the transmission link away from the side of the gear box only. cam slot. 2a. Removing the nut and bolt that passes NOTE: Catch the double roller when lifting the through the double roller.
  • Page 57 STEERING-HYDROGEAR Insert the pins of the gauge block tool P/N 753- Tighten the return to neutral bolt. 05437 into the cam slot. See Figure 6A.5. See Figure 6A.7. Pins Return to neutral bolt Gauge block tool Figure 6A.5 Figure 6A.7 Rest the tool flat against the frame.

  • Page 58: Neutral And Transmission Links Adjustment

    STEERING-HYDROGEAR Neutral and Transmission Links Adjustment 1d. Finger tighten the screw to set the screw fully into the detent. The steering gear box is The first step is to coordinate the neutral points of now centered and locked. See Figure 6A.9. the steering gear box, both transmissions and the con- trol linkages.
  • Page 59 STEERING-HYDROGEAR Loosen the two screws that connect each drive Loosen the socket head cap screw in the control link to the shifter T-plate on each trans- slot of the shift selector plate. mission. See Figure 6A.11. See Figure 6A.12. Loosen these screws Shifter T-plate Loosen this bolt Shift selector plate...

  • Page 60: Wheel Alignment

    STEERING-HYDROGEAR Wheel alignment Insert a 5/16” pin through the hole in the steer- ing gear on each side. The pins should pass NOTE: The transmission neutral adjustment through the gears, through the lower cover plate must be done prior to adjusting the steering link- and into the pivot bar.

  • Page 61: Steering Gear Box Removal

    STEERING-HYDROGEAR 3b. Adjust the drag link until the holes line up Steering gear box removal See Figure 6A.17. To replace the gear box: Remove the dash and fender by following the steps described in Chapter 4: Body/Chassis. Disconnect the transmission linkages: Rotate to lengthen or shorten 2a.
  • Page 62 STEERING-HYDROGEAR At the bottom of the lever with the cam slot there Remove the transmission dampener cylinder is a connector link. Remove the hairpin clip and using two 1/2” wrenches. See Figure 6A.22. push it out of the lever. See Figure 6A.20. Remove hair pin clip Transmission dampener...
  • Page 63 STEERING-HYDROGEAR Remove the four screws holding the gear box to the frame with a 1/2” wrench. See Figure 6A.26. NOTE: Rotating the steering shaft bushing 90 degrees will allow the bushing to pop out, reliev- ing the pressure on the steering shaft. This will make it easier to remove or install the shaft.
  • Page 64 STEERING-HYDROGEAR Apply anti-seize compound to the rollers and the Insert the clevis pins, washers and cotter pins. cam slots on the gear box levers. Align the wheels and adjust the transmission See Figure 6A.28. links by following the steps described at the beginning of this chapter.

  • Page 65: Rebuilding The Steering Gear Box

    STEERING-HYDROGEAR Rebuilding the steering gear box Remove the return to neutral bracket using a 3/8” wrench. See Figure 6A.31. There are two different gear boxes available for the I-series tractors that are equipped with HydroGear transmissions. • The 618-04430 steering gear box was used until the end of the 2007 model year.
  • Page 66 STEERING-HYDROGEAR Lift the upper housing off of the lower housing. Remove the speed cam assemblies. See Figure 6A.35. NOTE: There is no sealant between the two housings. They should easily slip apart. If they are stuck together, there are three pry points cast into the housings that can be used to sepa- rate the housings.
  • Page 67 STEERING-HYDROGEAR Separate the speed cam from the output bevel Remove the washer from the input sector gear. gear assembly by removing the small snap ring See Figure 6A.39. from the speed cam shaft. See Figure 6A.37. NOTE: The 618-04430 gear boxes only Speed cam Remove the washer Output bevel gear assembly...
  • Page 68 STEERING-HYDROGEAR Inspect the input sector gear bushings for dam- Remove both of the bevel gears. age and/or signs of wear. If they show signs of See Figure 6A.43. wear of damage, press both of the bushings out of the input sector gear using a press. See Figure 6A.41.
  • Page 69 STEERING-HYDROGEAR Remove the snap ring from the input shaft. Remove the wear block. See Figure 6A.45. NOTE: On early production models of the 618- 04430 and all versions of the 618-04634 steer- ing gear boxes there is a spring that presses the wear block against the steering rack.
  • Page 70 STEERING-HYDROGEAR Inspect the bearings. If they are worn or rough, To assemble the steering gear box: carefully drive the inner bearing out of the upper Put a dab of 737-0300A Durina grease into housing using a pin punch and hammer. each of the bushings in the lower housing.
  • Page 71 STEERING-HYDROGEAR Insert the steering shaft. See Figure 6A.53. Install the internal cam with the shoulder facing up. The bevel gear rollers in the slots. See Figure 6A.55. Slots Shoulder Steering shaft Figure 6A.53 Figure 6A.55 Place the large washer over the steering shaft. See Figure 6A.54.
  • Page 72 STEERING-HYDROGEAR Insert the input sector gear into the internal cam. Speed cam NOTE: The input sector gear and the internal cam have a master spline to time the two to Shim Output bevel gear each other. See Figure 6A.57. Bushing Chamfer Hydro arm Figure 6A.59...
  • Page 73 STEERING-HYDROGEAR 9e. Install both of the snap rings. • The bevel gears should face away from the input sector gear. 9f. Repeat for the right output bevel gear assembly. • The first tooth of each output bevel gear should rest in the first valley the bevel gears in the bot- Place both output bevel gear assemblies on the tom of the lower housing.
  • Page 74 STEERING-HYDROGEAR Fill the lower housing with 12 oz. of 737-0300A Press the lower ball bearing into the upper hous- Durina grease. See Figure 6A.65. ing. See Figure 6A.67. A socket can be used to press in the ball bearing Figure 6A.65 Figure 6A.67 Press in the upper ball bearing into the upper Insert the input shaft thought the ball bearings...
  • Page 75 STEERING-HYDROGEAR Install the snap ring on the input shaft. • For all other steering gear boxes: See Figure 6A.69. 17c. Insert the spring into the wear block. 17d. Set the wear block and spring into the square recess in the upper housing. See Figure 6A.71.
  • Page 76 STEERING-HYDROGEAR With the wear block facing the front, adjust the Check the timing of the gear box: steering rack until the right side measures 1.8” 22a. Turn the input shaft until the steering rack from the case to the shoulder at the end of the has moved all the way to the left.

  • Page 77: Wear Block Adjustment

    STEERING-HYDROGEAR Wear block adjustment While turning the input shaft, tighten the adjust- ment bolt until increased drag is felt. All of the steering gear boxes have a wear block See Figure 6A.77. that presses the wear block against the steering rack to set the back lash between the steering rack and the input shaft.

  • Page 78: Front Wheels And Axles

    STEERING-HYDROGEAR Front wheels and axles To replace the front wheel ball bearings: Lift and safely support the front end of the trac- Remove/ replace the front wheels: tor. Lift and safely support the front end of the trac- Remove the front wheel by following the proce- tor.
  • Page 79 STEERING-HYDROGEAR To remove/ replace the front axles: Take the bolt all the way out. Lift and safely support the front of the tractor. NOTE: The axle should fall out at this point. Remove the front wheel by following the proce- Install the axle by following the previous steps in dures the front wheel section of this chapter.

  • Page 80: Drag Links

    STEERING-HYDROGEAR Drag links Remove the spherical rod ends. To remove/replace a drag link: NOTE: Count the number of turns to remove the spherical rod ends. Remove the steering gear covers. Install new spherical rod ends. Remove and discard the nut holding the drag link to the inboard steering gear using two 9/16”...

  • Page 81: Inboard Steering Gear

    STEERING-HYDROGEAR To remove/replace the tie rod: To remove/replace the inboard steering gear or king pin: Remove the steering gear covers. Remove the steering gear covers. Remove and discard the nut holding the tie rod Remove and discard the nut holding the tie rod spherical rod ends to the inboard steering gear spherical rod ends to the inboard steering gear using two 9/16”...

  • Page 82: Pivot Bar

    STEERING-HYDROGEAR Install the king pin. Pivot bar Align the timing marks and install the inboard To remove/replace the pivot bar: steering gear. Lift and safely support the front end of the trac- tor. Tie rod end Remove the front axles by following the proce- dures described in the front wheels and axles Bolt section of this chapter.
  • Page 83 STEERING-HYDROGEAR Remove the pivot bar shoulder bolts. With the pivot bar on a bench, the inboard steer- See Figure 6A.93. ing gear and the tie rod can be serviced. Remove the tie rod by removing and discarding the nut holding the tie rod ends to the in board steering gear.
  • Page 84 STEERING-HYDROGEAR Start re-assembling the pivot bar by inserting the Insert a 5/16” pin punch in the alignment holes of steering king pins into the pivot bar. Secure them the out board steering gears. with new cotter pins. See Figure 6A.97. NOTE: Make sure they go all the way through into the pivot bar to lock the gears in position.
  • Page 85 STEERING-HYDROGEAR Install the pivot bar by following steps 3 - 7 in reverse order. NOTE: When installing the pivot bar, use a clamp to line up the screw holes in the frame, pivot bar and bumper mounting brackets. See Figure 6A.100. Figure 6A.100 Slide the front wheels on and secure them with new cotter pins.
  • Page 86 STEERING-HYDROGEAR...

  • Page 87: Chapter 6B: Steering - Ivt Transmission

    STEERING-IVT CHAPTER 6B: STEERING - IVT TRANSMISSION Introduction Cam Slot Angle Adjustment Just like the I-series with HydroGear transmis- The cam slot adjustment is a critical adjustment on sions, the steering on the I-series tractor with the the I-series tractor. It should only be necessary when Infinitely Variable Transmission (IVT) works in two replacing the steering gear box.
  • Page 88 STEERING-IVT 2b. Using a 1/4”-20x2” bolt, thread it into the Loosen the two nuts and bolts on the drive con- steering box centering port until you feel it trol link. touch the steering rack. While trying to gen- Remove the bow tie clip and clevis pin from the tly thread the bolt further, slowly rotate the drive control link.
  • Page 89 STEERING-IVT 6b. Remove the bow tie and clevis pins. Set the cam slot angle at 90 to the frame using a combination square. See Figure 6B.8. 6c. Raise the drive control link away from the cam slot. NOTE: Catch the double roller when lifting the drive control link away from the steering gear box.

  • Page 90: Neutral And Drive Control Links Adjustment

    STEERING-IVT Neutral and drive control links Adjustment IMPORTANT: Check the tire air pressure before NOTE: There is no puller needed for the steer- attempting to diagnose any problems with the ing wheel. Once the bolt is removed it will lift off steering or tracking of an I-series tractor.
  • Page 91 STEERING-IVT Remove the two screws in the cargo net area, at Lock Steering Gear Box in Neutral Position: the bottom of the dash. See Figure 6B.13. 7a. Remove the 1/4”-20 plug screw from the steering gear box centering port using a 3/8” wrench.
  • Page 92 STEERING-IVT Jack the tractor up so that both rear wheels are off of the ground and place a pair of jack stands NOTE: If a tachometer is not available: under the rear transmissions. 14a. Before starting the tractor, mark the brake Remove the rear wheels.
  • Page 93 STEERING-IVT If the transmission needs adjusted: Tighten the two nuts and bolts in the center of the drive control linkage. Turn off the engine. Reassemble the tractor. Loosen the two nuts and bolts in the center of the drive control linkage on the side that needs NOTE: Leave the 1/4”-20x2”...

  • Page 94: Wheel Alignment

    STEERING-IVT Wheel alignment Insert a 5/16” pin through the hole in the steer- ing gear on each side. The pins should pass NOTE: The transmission neutral adjustment through the gears, through the lower cover plate must be done prior to adjusting the steering link- and into the pivot bar.

  • Page 95: Steering Gear Box Removal

    STEERING-IVT 3b. Adjust the drag link until the holes line up Steering gear box removal See Figure 6B.25. To replace the gear box: Remove the dash and fender by following the steps described in Chapter 4: Body/Chassis. Match mark the drive control link between the Rotate to lengthen or shorten two nuts and bolts.
  • Page 96 STEERING-IVT Disconnect the drive control link from both sides On the right side cam slot lever there is a con- of the gear box by removing the nut and bolt. nector link. Remove the hairpin clip. See Figure 6B.5. See Figure 6B.30. Remove this nut and bolt Remove hair...
  • Page 97 STEERING-IVT Remove the steering shaft by removing the two Disconnect the ground wire. See Figure 6B.34. clamp bolts in the steering shaft receiver and lift- ing the shaft out. See Figure 6B.32. Steering shaft Steering shaft Receiver Ground wire Figure 6B.34 Figure 6B.32 Remove the four screws holding the gear box to the frame with a 1/2”...

  • Page 98: Rebuilding The Steering Gear Box

    STEERING-IVT Attach the steering links. Install the retainers. Rebuilding the steering gear box NOTE: If the retainers are bent or twisted, the To take the steering gear box apart: whole link must be replaced. The retainers are Remove the steering gear box by following the not available separately.
  • Page 99 STEERING-IVT Remove the six remaining case screws using a Separate the speed cam assemblies by driving 3/8” wrench. See Figure 6B.38. out the two roll pins using a 5/32” pin punch and a hammer. See Figure 6B.40. Remove these screws 5/32”...
  • Page 100 STEERING-IVT Remove the input sector gear. Remove the internal cam and both of the wash- See Figure 6B.42. ers on top of the cam. See Figure 6B.44. Washers Steering Input sector gear shaft Internal cam Figure 6B.42 Figure 6B.44 Inspect the input sector gear bushings for dam- NOTE: The steering shaft is pressed into the age and/or signs of wear.
  • Page 101 STEERING-IVT Slide the rollers off of the bevel gears. Remove the snap ring from the input shaft. See Figure 6B.46. See Figure 6B.48. Rollers Figure 6B.46 Figure 6B.48 NOTE: There are no retains for these rollers Remove the input shaft from the inside of the because they are trapped between the bevel housing.
  • Page 102 STEERING-IVT Inspect the bearings. If they are worn or rough, To assemble the steering gear box: carefully drive the inner bearing out of the upper Put a dab of 737-0300A Durina grease into housing using a pin punch and hammer. each of the bushings in the lower housing.
  • Page 103 STEERING-IVT Install the internal cam so that the rollers on the Set the thin washer on top of the thick washer. bevel gears ride in the groves of the cam. See Figure 6B.56. See Figure 6B.54. Cam groves Thin washer Figure 6B.56 Figure 6B.54 Apply a dab of 737-0300A Durina...
  • Page 104 STEERING-IVT Insert the input sector gear into the internal cam. 8c. Place a .030” shim (or a wave washer if it came with one) over the output arm. NOTE: The input sector gear and the internal See Figure 6B.59. cam have a master spline to time the two to each other.
  • Page 105 STEERING-IVT 8e. Install the snap ring. • Line the hole in the input sector gear up with the the center of the square recess at the front of the 8f. Repeat for the right output bevel gear lower housing. assembly. •...
  • Page 106 STEERING-IVT Press the lower ball bearing into the upper hous- ing. See Figure 6B.68. NOTE: If one or both of the output bevel gears are out of time, the steering rack will lose travel on the affected side. Fill the lower housing with 12 oz. of 737-0300A Durina grease.
  • Page 107 STEERING-IVT Install the snap ring on the input shaft. Set the steering rack into the grove in the upper See Figure 6B.70. housing. Trapping it between the input shaft and the wear block. See Figure 6B.72. NOTE: The hole in the steering rack should line up with the hole in the housing.

  • Page 108: Front Wheels And Axles

    STEERING-IVT Check the timing of the gear box: Front wheels and axles 22a. Turn the input shaft until the steering rack Remove/ replace the front wheels: has moved all the way to the left. The right Lift and safely support the front end of the trac- shoulder should be flush with the housing.
  • Page 109 STEERING-IVT To replace the front wheel ball bearings: To remove/ replace the front axles: Lift and safely support the front end of the trac- Lift and safely support the front of the tractor. tor. Remove the front wheel by following the proce- Remove the front wheel by following the proce- dures in the front wheel section of this chapter.

  • Page 110: Drag Links

    STEERING-IVT Take the bolt all the way out. Drag links NOTE: The axle should fall out at this point. To remove/replace a drag link: Install the axle by following the previous steps in Remove the steering gear covers. reverse order. Remove and discard the nut holding the drag Install the axle by following the previous steps in link to the inboard steering gear using two 9/16”...

  • Page 111: Tie Rod

    STEERING-IVT Loosen the jam nuts. Tie rod Remove the spherical rod ends. To remove/replace the tie rod: NOTE: Count the number of turns to remove the Remove the steering gear covers. spherical rod ends. Remove and discard the nut holding the tie rod Install new spherical rod ends.

  • Page 112: Inboard Steering Gear

    STEERING-IVT Inboard steering gear Install the king pin. To remove/replace the inboard steering gear or king Align the timing marks and install the inboard pin: steering gear. Remove the steering gear covers. Tie rod end Remove and discard the nut holding the tie rod spherical rod ends to the inboard steering gear using two 9/16”...

  • Page 113: Pivot Bar

    STEERING-IVT Pivot bar Remove the pivot bar shoulder bolts. See Figure 6B.90. To remove/replace the pivot bar: Lift and safely support the front end of the trac- tor. Remove the front axles by following the proce- Shoulder bolts dures described in the front wheels and axles section of this chapter.
  • Page 114 STEERING-IVT With the pivot bar on a bench, the inboard steer- Start re-assembling the pivot bar by inserting the ing gear and the tie rod can be serviced. steering king pins into the pivot bar. Secure them with new cotter pins. See Figure 6B.93. Remove the tie rod by removing and discarding the nut holding the tie rod ends to the in board Install the axle assemblies.
  • Page 115 STEERING-IVT Install the tie rod end using a new lock nut. Perform a neutral adjustment and wheel align- ment as described in the begining of this chap- Apply high quality grease to the frame and the ter. inside of the pivot bar bracket, where the pivot bar rides.
  • Page 116 STEERING-IVT...

  • Page 117: Chapter 7: Electrical System

    ELECTRICAL SYSTEM CHAPTER 7: ELECTRICAL SYSTEM Introduction Components This chapter is divided into four sections: The I-series tractors have the Cub Cadet Rev-Tek system.. • Section 1: About this chapter and precautions RMC Module • Section 2: Components This section will describe the location and opera- The RMC module contains electronic logic cir- tion of the electrical components on the tractor.
  • Page 118 ELECTRICAL SYSTEM information and the proper tools, a technician • M is connected to the magneto by a yellow wire, should be able to efficiently diagnose most elec- G is connected to ground by a green wire, and trical problems. A1 is connected to the after fire solenoid.
  • Page 119 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 a good battery powered directly by the red wire from the B ter- then check for power where the fused red wire minal of the key switch, and should operate...
  • Page 120 ELECTRICAL SYSTEM 2e. The RMC Module is in the same housing as • When the RMC module is disarmed, the tractor the key switch, and is not available sepa- will operate as MTD tractors have historically rately. For the purpose of diagnosis it is operated: treated separately.
  • Page 121 ELECTRICAL SYSTEM ton. It will be confirmed that the module is ON by B Looking at the plug head-on, it will be con- the illumination of the red LED on the module. figured as shown in the diagram: There will be 8 female pin terminals.
  • Page 122 ELECTRICAL SYSTEM • Circuitry: The yellow wire with black trace leads this terminal and the black probe is grounded, to the PTO switch, where it finds a path to regardless of the key switch position. ground when the PTO is ON. •...
  • Page 123 ELECTRICAL SYSTEM 3b. B-COM is in the safety shut-down circuit. It The Brake Switch is mounted to the inside of is a normally opened (NO) set of contacts. A the frame on the right side. See Figure 7.8. circuit is completed from the M terminal on the key switch through the yellow wire to the Magneto terminal on the RMC module through the yellow wire with black trace...
  • Page 124 ELECTRICAL SYSTEM The Reverse Safety Switch is a simple metal • The yellow wire with white trace is connected to contact tang. When the drive pedal is pressed the front spade terminal on the seat safety into reverse, the reverse switch is pushed into a switch.
  • Page 125 ELECTRICAL SYSTEM The lighting circuit is hot whenever the engine • There is a second red wire with white trace for is running. It does not draw from the battery, but the auxiliary power point that will supply a 5 amp runs directly off its own circuit on the alternator.
  • Page 126 Electronics NOTE: Electrical diagnostic procedures and The outdoor power equipment has historically had tools are the same for all Cub Cadet and MTD relatively simple electro-mechanical controls. Cus- tractors. This section is written in a way to pro- tomer expectations and regulatory demands continue...

  • Page 127: 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 128 ELECTRICAL SYSTEM Ohm’s Law Kirchhoff’s current law Ohm’s Law relates voltage, amperage, and resis- Kirchhoff’s current law deals with nodes. Nodes tance. It states that voltage is the product of resistance are the junction of two or more wires or the junction of a times current.
  • Page 129 ELECTRICAL SYSTEM Kirchhoff’s voltage law How the system is wired together Kirchhoff’s voltage law deals with voltage drops. A The Rules voltage drop is the amount of voltage used up or All circuits have some basic rules that must be fol- “dropped”...

  • Page 130: 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 7.20. • Series • Parallel • Series/parallel Lamp Battery Series Lamp Series circuits are wired so that the current has only one path to follow.

  • Page 131: 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 any increase in resistance. electrical system. There is an amazing variety of DMMs on the market. Some are very basic, others are tailored This can be caused by loose or corroded connec- to specific industries, and some high-end graphing tions, or connections that are insulated by grease,...

  • Page 132: Wiring Diagram Or Schematic

    ELECTRICAL SYSTEM Amperage Wiring diagram or schematic A wiring or a schematic diagram, and the ability to Most DMMs have a very limited capacity to test read it are very important in troubleshooting a circuit. amperage (2-3 Amperes). When measuring current The diagram shows how the circuit was designed and flow, the meter must be connected in series with the what paths the electricity is suppose to flow.

  • Page 133: Ammeters And Specialized Charging System Testers

    ELECTRICAL SYSTEM Self-powered continuity lights Ammeters and specialized charging system testers Continuity lights can indicate whether a circuit is Inductive ammeters are available in many forms. complete or not, but they give no indication of resis- Some are as simple as a gauge to be held against the tance.
  • Page 134 ELECTRICAL SYSTEM To identify a specific charging system problem, iso- late the components of the system and check their per- NOTE: Usage of the DC Shunt tool is detailed in formance individually. the 1995 and 1999 editions of their Update Sem- inar materials.
  • Page 135 ELECTRICAL SYSTEM 2b. Check the stator for resistance across the 2e. Interpretation: If the ohm meter indicates no leads. It should be in the range of 0.1 -0.2Ω. continuity between the two the purple sta- See Figure 7.28. tor leads, there is a fault in the stator wind- ings.

  • Page 136: Batteries

    These chemicals are known in the State of California to cause cancer and reproductive harm. Wash hands after handling. NOTE: The batteries used in Current Cub Cadet equipment are sealed. It is not possible to check, test or add fluid.
  • Page 137 ELECTRICAL SYSTEM Importance of battery charge level and condi- Checking battery condition: There are three tion: A fully charged battery that is in good condi- things to do when testing a battery: tion is an important factor when trying to •...

  • Page 138: Battery Testers

    ELECTRICAL SYSTEM 6c. Squeeze the bulb on the hydrometer, then Battery Testers: insert the hose into the cell. There are four major ways to check a battery: 6d. Release the bulb, drawing electrolyte into • Electrolyte test using a Specific Gravity tester the hydrometer to the fill line.
  • Page 139 ELECTRICAL SYSTEM Fixed load testing NOTE: CCA stands for cold cranking amps. The Fixed load testers (sometimes called toasters) are rating should be on the battery for aftermarket inexpensive load testers found at any auto parts store. batteries. For OEM batteries, contact the manu- See Figure 7.35.
  • Page 140 ELECTRICAL SYSTEM Capacitance testing Battery discharge test There are several brands of capacitance battery Occasionally a battery will discharge while sitting tester presently on the market. Capacitance battery unused. To test for a battery that is “leaking” voltage: testers use the battery being tested as their power 4a.
  • Page 141 ELECTRICAL SYSTEM 4e. If the battery is being checked indepen- 6c. Take a methodical approach to finding the dently of the equipment it powers, measure problem. As a rule of thumb, start at one and note the battery voltage while it is dis- end of the circuit and work to the other.

  • Page 142: Voltage Drop Test

    ELECTRICAL SYSTEM 7a. Starting with a fully charged battery and bat- Voltage Drop Test tery cable connections that are clean and To review: tight, measure the battery voltage. See Figure 7.39. • Ohm’s law states that it takes voltage to push current through a resistance.
  • Page 143 ELECTRICAL SYSTEM 9d. The voltage that shows-up on the meter is 9f. A similar ground-side test on a tractor with a the voltage that is being used to pass cur- slow-cranking starter motor can be con- rent through a resistance in the circuit. ducted between the engine block and the negative battery post.
  • Page 144 ELECTRICAL SYSTEM Applying this principle to the positive side of the • As an example, if the tractor had a slow-turning system. See Figure 7.43. starter, the ground-side voltage drop measured below 0.1 volts, and there was not a parasitic load on the engine (e.g.
  • Page 145 What is a diode? A diode acts like a one way actuated. valve, allowing current to flow in only one direction. 11d. Many switches on Cub Cadet equipment See Figure 7.46. are typed by their at-rest state: Normally Open, Normally Closed, Common.
  • Page 146 ELECTRICAL SYSTEM Testing a diode: 12f. Switch the leads. 12a. Isolate the diode in the circuit. 12g. The meter should indicate no continuity. See Figure 7.49. 12b. Set the DMM to the diode or Ω scale. See Figure 7.47. No continuity Silver band Diode scale Figure 7.49...
  • Page 147 ELECTRICAL SYSTEM...
  • Page 148 ELECTRICAL SYSTEM...

  • Page 149: Cutting Decks

    CUTTING DECKS AND LIFT SHAFT CHAPTER 8: CUTTING DECKS AND LIFT SHAFT Cutting decks Slide the deck forward to unhook the front hanger. See Figure 8.2. The I-series comes with the option of a 42”, 46” or 50” deck. The procedure to remove the deck is the same for all of them.

  • Page 150: Cleaning The Deck

    The I-series comes underside of the deck after scraping it clean will with what Cub Cadet calls a 3 in 1 blade. This means it help prevent rusting of the deck and help keep can side discharge, bag and mulch.
  • Page 151 CUTTING DECKS AND LIFT SHAFT To remove the blades: • The blade can be tested by using a blade bal- ancer. Grind metal from the heavy side until it Remove the deck as described in the previous balances evenly. section of this chapter or lift the tractor using a professional grade lift.

  • Page 152: Pto Belt

    Cub Cadet belts are design to fit our ! CAUTION ! CAUTION equipment and are not standard lengths.

  • Page 153: Timing Belt

    CUTTING DECKS AND LIFT SHAFT • For a 46” deck, See Figure 8.7. 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. Remove the PTO belt idler spring.
  • Page 154 CUTTING DECKS AND LIFT SHAFT To install the timing belt turn the blades 90 apart. See Figure 8.13. NOTE: The idler pulley will back away from the idler stop bolt as the belt wears. The stop bolt should be adjusted after every 10 hours of use. Remove the timing belt idler spring.

  • Page 155: Spindles

    CUTTING DECKS AND LIFT SHAFT Spindles To reach the outer spindles, remove the spindle covers. See Figure 8.16. Each blade spindle is sold as a complete unit. The only replaceable parts are the pulley and nuts. The Spindle cover spindles are equipped with a grease fittings that should get one squirt of grease after every use of the deck wash system or every 10 hours of use.

  • Page 156: To Replace A Spindle

    Remove these NOTE: Use of Cub Cadet deck leveling gauge, bolts part number 490-900-0041, will make measuring the blade tip height easier. See Figure 8.18.

  • Page 157: Front To Rear Leveling

    CUTTING DECKS AND LIFT SHAFT Working from the left side of the tractor, loosen, Measure the distance from the front of the blade but do not remove, the bolt on the left deck tip to the ground and the rear of the blade tip to hanger bracket.

  • Page 158: Deck Gauge Wheel Adjustment

    CUTTING DECKS AND LIFT SHAFT Deck Gauge Wheel Adjustment Deck Rear Roller Adjustment The cutting decks are of a “floating” design. This The rear rollers on the mower deck are not means that they are suspended above the ground. The designed to carry the weight of the deck.

  • Page 159: Deck Lift Shaft Assembly Bushings

    CUTTING DECKS AND LIFT SHAFT 50" Deck ONLY Deck lift shaft assembly bushings NOTE: The 50" deck roller assembly index The deck lift shaft assembly bushings for the I- bracket has five adjustment holes. series tractor can be replaced with out removing the deck lift shaft assembly.

  • Page 160: Deck Lift Shaft Assembly Removal/Replacement

    CUTTING DECKS AND LIFT SHAFT Deck lift shaft assembly removal/replacement Remove the E-clips that retain the bushings. See Figure 8.27. Remove the deck by following the steps described at the beginning of this chapter. Remove the fender by following the steps described in Chapter 4: Body/Chassis.

  • Page 161: Deck Lift Links And Cables

    CUTTING DECKS AND LIFT SHAFT Deck lift links and cables The deck lift links have two functions. The first function is to support the rear of the deck. The second function is to raise or lower the deck in response to movement of the deck lift lever.
  • Page 162 CUTTING DECKS AND LIFT SHAFT...

  • Page 163: Chapter 9: Maintenance Intervals

    To help keep the I-series in proper running order, The spark plugs should be checked, cleaned and Cub Cadet recommends the following lubrication inter- re-gapped on a monthly basis or every 100 hours of vals be used (adjustable to local conditions). Use a use.

  • Page 164: Air Filter And Foam Pre Cleaner

    MAINTENANCE INTERVALS Remove the spark plugs with a 5/8” spark plug Air filter and foam pre cleaner socket. See Figure 9.2. A dirty air filter and/or foam pre cleaner can reduce engine power, increase fuel consumption and make 5/8” socket starting more difficult.

  • Page 165: Oil Change

    MAINTENANCE INTERVALS Remove the air filter and pre cleaner. Oil change Slide the pre cleaner off of the air filter. The oil change interval is every 100 hrs. See Figure 9.5. NOTE: The first oil change should be preformed at 5 hours. Pre cleaner To change the oil: Air filter...

  • Page 166: Oil Filter

    MAINTENANCE INTERVALS After all of the oil has been drained, close the oil Oil filter drain by pushing it in. To replace the oil filter: Remove the drain hose. Drain the oil by following the previously Place the cap back on the oil drain. described steps.

  • Page 167: Fuel System

    Exposure to air causes fuel to go bad quickly, leaving gum and varnish deposits. Fuel used in Cub Cadet outdoor power equipment should be no more than 30 days old. Because it may already have been stored at the refinery or gas station...

  • Page 168: Clean The Engine

    MAINTENANCE INTERVALS Clean the engine Air cooled engines cool better if they are clean. Check for nesting or signs of nesting especially after dormant season storage. See Figure 9.10. Obstructed air filter Mouse nest Figure 9.10...

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