High Clutch

HIGH CLUTCH
DISASSEMBLY
1. Check operation of high clutch.





a. Apply compressed air to oil hole of input shaft with nylon cloth.
- Stop up hole on opposite side of input shaft with nylon cloth.
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.
- Always replace when removed.





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 over springs.
- Do not expand snap ring excessively.
6. Remove spring retainer and return springs.





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





8. Remove D-rings from piston.

INSPECTION
HIGH CLUTCH SNAP RING, SPRING RETAINER AND RETURN SPRINGS
- Check for deformation, fatigue or damage.
If necessary, replace.
- 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 1.6 mm (0.063 inch)
Wear limit 1.4 mm (0.055 inch)

- If not within wear limit, replace.

HIGH CLUTCH PISTON
- Make sure that 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 that 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 allowable limit, replace input shaft assembly.

ASSEMBLY





1. Install D-rings on piston.
- 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.





4. Set Tool on spring retainer and install snap ring while compressing return springs.
- Set Tool directly over 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 1.8 - 2.2 mm (0.071 - 0.087 inch)
Allowable limit 2.8 mm (0.110 inch)

Retaining plate: Refer to image.





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





- Apply petroleum jelly to seal rings.
- Always replace when removed.





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