Rear Clutch

REAR CLUTCH





Components

Rear Clutch Disassembly
1. CHECK PISTON STROKE OF REAR CLUTCH





a. Place the rear clutch assembly onto the center support.





b. Using a dial indicator, measure the rear clutch piston stroke while applying and releasing compressed air (392 - 785 kPa, 4 - 8 kgf/cm2 , 57 - 114 psi).

Piston stroke: 0.91 - 1.99 mm (0.0358 - 0.0783 inch)

If the values are non-standard, inspect the discs.
2. REMOVE FLANGE





a. Using a screwdriver, remove the snap ring.





b. Remove the flange.





3. REMOVE DISCS AND PLATES
Remove the 3 discs and 3 plates.





4. REMOVE PISTON RETURN SPRINGS
a. Place Special Service Tools (SST) on the spring seat and compress the return springs with a shop press.
SST 09350-20015 (09369-20040)
b. Using a snap ring expander, remove the snap ring.





c. Remove the piston return spring.





5. REMOVE REAR CLUTCH PISTON
a. Place the rear clutch drum onto the center support.
b. Hold the rear clutch piston with hand, apply compressed air to the center support to remove the rear clutch piston.
c. Remove the 4 O-rings from the piston.

Rear Clutch Inspection





1. INSPECT DISC, PLATE AND FLANGE
Check to see if the sliding surface of the disc, plate and flange are worn or burnt. If necessary, replace them.

HINT:
- If the lining of the disc is peeling off or discolored, or even if parts of the printed numbers are defaced, replace all discs.
- Before assembling new discs, soak them in Automatic Transmission Fluid (ATF) for at least 15 minutes.





2. CHECK REAR CLUTCH PISTON
a. Check that check balls are free by shaking the piston.
b. Check that the valves do not leak by applying low pressure compressed air.

Rear Clutch Assembly





1. INSTALL REAR CLUTCH PISTON
a. Coat new O-rings with ATF and install them on the rear clutch piston.
b. Place SST on the rear clutch piston.
SST 09350-20015 (09369-20040)
c. Being careful not to damage the O-rings, press in the rear clutch piston into the clutch drum with both hands.
2. INSTALL PISTON RETURN SPRINGS





a. Install the piston return spring.
b. Place SST on the spring seat, and compress the return springs with a shop press.
SST 09350-20015 (09369-20040)





c. Install the snap ring with a snap ring expander. Be sure the end gap of the snap ring is not aligned with the spring seat claw.





3. INSTALL PLATES AND DISCS
Install the 3 plates and 3 discs.
Install in order: P=Plate D=Disc
P - D - P - D - P - D
4. INSTALL FLANGE





a. Install the flange, the flat end facing downward.





b. Using a screwdriver, install the snap ring. Be sure the end gap of the snap ring is not aligned with the cutout portion of the rear clutch drum.





5. CHECK PISTON STROKE OF REAR CLUTCH
a. Plate the rear clutch assembly onto the center support.
b. Using a dial indicator, measure the rear clutch piston stroke while applying and releasing compressed air (392 - 785 kPa, 4 - 8 kgf/cm2, 57 - 114 psi).

Piston stroke: 0.91 - 1.99 mm (0.0358 - 0.0783 inch)

If the piston stroke is less than the limit, parts may have been assembled incorrectly, check and reassemble again.