Reverse Clutch

DISASSEMBLY
1. Remove No. 2 needle bearing.





2. Remove clutch pressure plate retainer snap ring.





3. Remove clutch pack.





4. Install Reverse Clutch Spring Compressor T80L-77405-A and Clutch Spring Compressor T65L-77515-A onto reverse clutch drum. Tighten enough to compress reverse clutch piston spring. Remove clutch pressure plate retainer snap ring.





5. Remove reverse clutch piston, reverse clutch piston spring and reverse clutch piston spring pressure ring.

NOTE: To aid in reverse clutch piston spring removal, it may be necessary to apply air pressure to the reverse clutch drum. Block the opposite hole with a finger.





6. Remove reverse clutch piston and reverse clutch piston small seal and reverse clutch piston outer seal.





ASSEMBLY
1. Install new reverse clutch piston small seal and reverse clutch piston outer seal on reverse clutch piston. Direction of installation is not important because seals are square cut.

NOTE:
- The piston check ball must be present and moving freely.
- Coat reverse clutch piston outer seal and reverse clutch piston small seal, reverse clutch drum, sealing area and seal protector with petroleum jelly.
- The seals are square and therefore can be installed in either direction.

2. Install reverse clutch piston as follows:
a. Install Reverse Clutch Inner Seal Protector T80L-77403-B on the clutch hub and Reverse Clutch Outer Seal Protector T80L-77403-A over the reverse clutch piston.





b. Position reverse clutch piston and push it to the bottom of the reverse clutch drum using even thumb pressure.





3. Install reverse clutch piston spring pressure ring and reverse clutch piston spring. The dished side of reverse clutch piston spring must face toward the reverse clutch piston.





4. Install reverse clutch piston spring pressure ring and retaining ring (with points down) using Reverse Clutch Spring Compressor and Clutch Spring Compressor.





5. Install front clutch pressure plate, clutch pack and rear clutch pressure plate. Position the stepped side of front clutch pressure plate down with flat side toward clutch pack and rear clutch pressure plate flat side toward clutch pack.








6. Install clutch pack clutch pressure plate retainer snap ring and check the clearance between the clutch pressure plate retainer snap ring and the clutch pressure plate using a feeler gauge. Clutch pressure plate should be held downward as clearance is checked using Dial Indicator with Bracketry TOOL-4201-C or equivalent. The clearance should be:
Four plate assembly: 1.01-1.524 mm (0.040-0.060 inch).
7. If clearance is not within specification, install correct size retaining ring and check clearance. Selective retaining rings are available in the following thicknesses:
1.52-1.62 mm (0.060-0.064 inch)
1.87-1.98 mm (0.074-0.078 inch)
2.23-2.33 mm (0.088-0.092 inch)
2.59-2.69 mm (0.102-0.106 inch)





8. Check clutch for proper operation using Rubber-tipped Air Nozzle D93L-7000-A or equivalent. The clutch should be heard and felt to work smoothly and without leakage.