Forward and Reverse Clutch

U151E AUTOMATIC TRANSAXLE: FORWARD AND REVERSE CLUTCH:

INSPECTION

1. INSPECT PACK CLEARANCE OF FORWARD CLUTCH





(a) Install the forward clutch on the oil pump.

NOTE: Be careful not to damage the oil seal ring of oil pump.

(b) Using a dial indicator, measure the forward clutch pack clearance while applying and releasing compressed air (392 kPa, 4.0 kgf/cm 2, 57 psi).
Pack clearance:
1.00 - 1.25 mm (0.0394 - 0.4921 in.)
If the clearance is not within standard, inspect the discs, plates and flange.

HINT: As the opening is large, cover it with a shop rug to prevent the compressed air from being released.

2. INSPECT FORWARD MULTIPLE DISC CLUTCH CLUTCH DISC





(a) Check to see if the sliding surface of the disc, plate and flange are worn or burnt.
If necessary, replace them.

- If the lining of the disc comes off or discolors, or even if replace all discs.
- Before assembling new discs, soak them in ATF for at least 15 minutes.

3. INSPECT FORWARD CLUTCH RETURN SPRING SUB-ASSEMBLY





(a) Using vernier calipers, measure the free length of the spring together with the spring seat.
Standard free length:
26.74 mm (1.0528 in.)
4. INSPECT PACK CLEARANCE OF FORWARD CLUTCH





(a) Using a dial indicator, measure the forward clutch pack clearance while applying and releasing compressed air (392 kgf-cm 2, 4.0 kPa, 57 psi).
Pack clearance:
1.00 - 1.25 mm (0.0394 - 0.4921 in.)
If the piston stroke is less than the minimum, parts may have been assembled incorrectly. Check and reassemble again.
If the clearance is not standard, select another flange.

HINT: There are 5 different flanges in thickness.





5. INSPECT FORWARD MULTIPLE DISC CLUTCH CLUTCH DISC





(a) Check if the disc lightly rotates when rotating the forward clutch assembly after inserting the multiple disc clutch into it.

NOTE: Do not place the forward clutch assembly in a vise.