Reverse Clutch

Special Tools:

Disassembly
1. Inspect the clutch cylinder thrust surfaces, piston bore and clutch plate serrations for scores or burrs. Minor scores or buffs may be removed with a crocus cloth. Replace the clutch cylinder if badly scored or damaged.
2. Check fluid passage in the clutch cylinder for obstructions. Clean out all fluid passages. Inspect the clutch piston for scores and replace if necessary. Inspect check balls for freedom of movement and proper seating.
3. Check clutch release spring for distortion and cracks. Replace the spring (including the wave spring) if distorted or cracked.
4. Inspect the composition clutch plates, steel clutch plates and clutch pressure plate for worn or scored bearing surfaces. Replace all parts that are deeply scored or burred.
5. Check the clutch plates for flatness and fit on clutch hub serrations. Discard any plate that does not slide freely on serrations or that is not flat.
6. Check clutch hub thrust surfaces for scores and clutch hub splines for wear.





7. Remove the No.2 forward clutch bearing.





8. Remove the reverse clutch pressure plate retainer.





9. Remove the reverse clutch pack.





10. Use (A) Reverse Clutch Spring Compressor and (B) Clutch Spring Compressor to compress the (C) reverse clutch piston spring.





11. Remove the reverse clutch piston spring retaining ring.





12. Remove the (A) reverse clutch piston spring and the (B) reverse clutch piston spring pressure ring.

NOTE: To ease reverse clutch piston removal, it may be necessary to apply air pressure to the reverse clutch drum. Block the opposite hole.





13. Remove the reverse clutch piston.





14. Remove the (A) reverse clutch piston inner seal and the (B) reverse clutch piston outer seal.


Assembly
1. Inspect the clutch cylinder thrust surfaces, piston bore and clutch plate serrations for scores or buffs. Minor scores or buffs may be removed with crocus cloth. Replace the clutch cylinder if badly scored or damaged.
2. Check the fluid passage in the clutch cylinder for obstructions. Clean out all fluid passages. Inspect clutch piston for scores and replace if necessary. Inspect the check balls for freedom of movement and proper seating.
3. Check the clutch release spring for distortion and cracks. Replace the spring (including wave spring) if distorted or cracked.
4. Inspect the composition clutch plates, steel clutch plates and clutch pressure plate for worn or scored bearing surfaces. Replace all the parts that are deeply scored or burred.
5. Check the clutch plates for flatness and fit on the clutch hub serrations. Discard any plate that does not slide freely on serrations or that is not flat.
6. Check the clutch hub thrust surfaces for scores and clutch hub splines for wear.

NOTE: The piston check ball must be present and moving freely.





7. Install a new (A) reverse clutch piston inner seal and (B) reverse clutch piston outer seal.

NOTE: Coat the reverse clutch piston inner seal, reverse clutch piston outer seal reverse clutch drum sealing area and seal protector with petroleum jelly.





8. Install the reverse clutch piston.
1. Position the Reverse Clutch Inner Seal Protector on the clutch hub.
2. Place the Reverse Clutch Outer Seal Protector over reverse clutch piston.
3. Position the reverse clutch piston and use even pressure to push it to the bottom of the reverse clutch drum.

NOTE: The dished side of the reverse clutch piston spring must face the reverse clutch piston.





9. Install the (A) pressure ring and the (B) reverse clutch piston spring.





10. Use (A) Reverse Clutch Spring Compressor and (B) Clutch Spring Compressor to compress the (C) reverse clutch piston spring.





11. Install the reverse clutch piston spring retaining ring.
12. Remove the Reverse Clutch Spring Compressor and Clutch Spring Compressor.

NOTE:
^ Before assembly, soak the new clutch discs in transmission fluid for 15 minutes.
^ Install the pressure plates with the flat sides facing the clutch pack.





13. Install the reverse clutch front pressure plate, clutch pack and reverse clutch rear pressure plate.





14. Install the reverse clutch pressure plate retainer snap ring.





15. Position and zero Dial Indicator With Bracketry on the reverse clutch pack.
^ Push downward on the clutch pack.
^ Release pressure and zero the dial indicator.





16. Check the reverse clutch pack clearance.
1. Lift up on the clutch pack until it fully seats against the reverse clutch pressure plate retainer.
2. Read the dial indicator.





^ If clearance is not within specifications, install the correct size retaining ring.





17. Check the clutch for proper operation.
^ Apply air pressure to the reverse clutch drum. The clutch should be heard and felt to work without leakage.