High Clutch

DISASSEMBLY





1. Check operation of high clutch.
a. Apply compressed air to oil hole of input shaft.
- Stop up a hole on opposite side of input shaft.
b. Check to see that retaining plate moves to snap ring.
c. If retaining plate does not contact snap ring:
- D-ring might be damaged.
- Oil seal might be damaged.
- Fluid might be leaking past piston check ball.





2. Remove seal rings from input shaft.





3. Remove snap ring.
4. Remove drive plates, driven plates and retaining plate.





5. Set Tool on spring retainer and remove snap ring from high clutch drum while compressing return springs.
- Set Tool directly above springs.
- Do not expand snap ring excessively.
6. Remove spring retainer and return springs.





- Do not remove return spring from spring retainer.





7. Remove piston from high clutch drum by turning it.





8. Remove D-ring and oil seal from piston.

INSPECTION
Reverse Clutch Snap Ring, Spring Retainer and Return Springs
- Check for deformation, fatigue or damage.
- Replace if necessary.
- When replacing spring retainer and return springs, replace them as a set.





High Clutch Drive Plates
- Check facing for burns, cracks or damage.
- Measure thickness of facing.
Thickness of drive plate:
Standard value: 2.0 mm (0.079 inch)
Wear limit: 1.8 mm (0.071 inch)
- If not within wear limit, replace.





High Clutch Piston
- Make sure check balls are not fixed.
- Apply compressed air to check ball oil hole opposite the return spring. Make sure there is no air leakage.
- Apply compressed air to oil hole on return spring side to make sure air leaks past ball.





Seal Ring Clearance
- Install new seal rings onto input shaft.
- Measure clearance between seal ring and ring groove.
Standard clearance: 0.08 - 0.23 mm (0.0031 - 0.0091 inch)
Allowable limit: 0.23 mm (0.0091 inch)
- If not within wear limit, replace input shaft assembly.

ASSEMBLY





1. Install D-ring and oil seal on piston.
- Take care with the direction of the oil seal.
- Apply ATF to both parts.





2. Install piston assembly by turning it slowly.
- Apply ATF to inner surface of drum.





3. Install return springs and spring retainer on piston.
Return spring: Refer to Specifications.
4. Set Tool on spring retainer and install snap ring while compressing return springs.





- Set Tool directly above return springs.





- Do not align snap ring gap with spring retainer stopper.
5. Install drive plates, driven plates and retaining plate.
Take care with the order and direction of plates.





6. Install snap ring.





7. Measure clearance between retaining plate and snap ring. If not within allowable limit, select proper retaining plate.
Specified clearance:
Standard: 1.4 - 1.8 mm (0.055 - 0.071 inch)
Allowable limit. 2.4 mm (0.094 inch)
Retaining plate: Refer to Application and ID.





8. Check operation of high clutch.
9. Install seal rings to input shaft.





- Apply petroleum jelly to seal rings.





- Roll paper around seal rings to prevent seal rings from spreading.