Inspection

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:
RL4FO3A
Standard value: 2.0 mm (0.019 in)
Wear limit: 1.8 mm (0.071 in)
RL4FO3V
Standard value: 1.6 mm (0.063 in)
Wear limit: 1.4 mm (0.055 in)

- If not within wear limit, replace.





High clutch dish plate
- Check for deformation or damage.
- Measure thickness of dish plate.

Thickness of dish plate "t": 2.1 mm (0.106 in)

- If deformed or fatigued, replace.





High clutch piston
- Make sure check balls are not fixed.
- Apply compressed air to check ball oil hole opposite the return spring to make sure that 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 in)

Allowable limit: 0.23 mm (0.0091 in)

- If not within wear limit, replace input shaft assembly.