Low & Reverse Brake

DISASSEMBLY




1. Check operation of low & reverse brake.
a. Apply compressed air to oil hole of transmission case.
b. Check to see that retaining plate moves to snap ring.
c. If retaining plate does not move to snap ring, D-ring or oil seal may be damaged or fluid may be leaking at piston check ball.




2. Stand transmission case.
3. Remove snap ring.
4. Remove drive plates, driven plates, retaining plate from transmission case.




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




- Do not remove return springs from spring retainer.




7. Apply compressed air to oil hole of transmission case while holding piston.
8. Remove piston from transmission case by turning it.




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

INSPECTION

Low & 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.

Low & reverse brake drive plate




- Check facing for burns, cracks or damage.
- Measure thickness of facing.

Thickness of drive plate:
Standard value: 2.0 mm (0.079 in)
Wear limit: 1.8 mm (0.071 in)

- If not within wear limit, replace.

ASSEMBLY




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




2. Stand transmission case.
3. Install piston assembly on transmission case while turning it slowly.
- Apply A.T.F. to inner surface of transmission case.




4. Install return springs and spring retainer on piston.




5. Install snap ring while compressing return springs.
- Set Tool directly above return springs.




6. Install drive plates, driven plates, retaining plates and dished plates.
- Do not align the projections on the two dished plates.
- Make sure to put the plates in the correct order and direction.




7. Install snap ring.




8. Measure clearance between retaining plate and snap ring. If not within allowable limit, select proper retaining plate (front side).

Specified clearance:
Standard: 1.4 - 1.8 mm (0.055 - 0.071 in)
Allowable limit: 2.8 mm (0.110 in)




9. Check operation of low & reverse brake.