Forward Clutch Disassembly
INSPECT PACK CLEARANCE OF FORWARD CLUTCH
REMOVE FORWARD MULTIPLE DISC CLUTCH DISC
REMOVE FORWARD CLUTCH RETURN SPRING SUB-ASSEMBLY
REMOVE FORWARD CLUTCH PISTON SUB-ASSEMBLY
REMOVE INPUT SHAFT OIL SEAL RING
Forward Clutch -- Disassembly |
1. INSPECT PACK CLEARANCE OF FORWARD CLUTCH |
Install the forward clutch on the oil pump.
- NOTICE:
- Be careful not to damage the oil seal ring of the oil pump.
Using a dial indicator, measure the forward clutch pack clearance while applying and releasing compressed air (392 kPa, 4.0 kgf/cm2, 57 psi).
- Pack clearance:
- 1.00 to 1.25 mm (0.0394 to 0.04921 in.)
If the clearance is not within the standard, inspect the discs, plates and flange.
If the piston stroke is less than the minimum, parts may have been assembled incorrectly. Check and reassemble again.
- HINT:
- As the opening is large, cover it with a piece of cloth or shop rag to prevent the compressed air from being released.
- There are 5 different thicknesses of flanges available.
Flange thickness: mm (in.)No.
| Thickness
| No.
| Thickness
|
1
| 3.00 (0.1181)
| 4
| 3.45 (0.1358)
|
2
| 3.15 (0.1240)
| 5
| 3.60 (0.1417)
|
3
| 3.30 (0.1299)
| -
| -
|
2. REMOVE FORWARD MULTIPLE DISC CLUTCH DISC |
Using a screwdriver, remove the snap ring.
Remove the flange, 5 discs and 5 plates from the input shaft assembly.
3. REMOVE FORWARD CLUTCH RETURN SPRING SUB-ASSEMBLY |
Place SST on the spring retainer and compress the return spring with a press.
- SST
- 09387-00020
Using a snap ring expander, remove the snap ring.
- NOTICE:
- Stop the press when the spring seat is lowered to the place 1 to 2 mm (0.039 to 0.078 in.) from the snap ring groove. This prevents the spring seat from bearing deformed.
- Do not expand the snap ring excessively.
Remove the clutch balancer from the input shaft.
Remove the forward clutch return spring from the input shaft.
4. REMOVE FORWARD CLUTCH PISTON SUB-ASSEMBLY |
Place the forward clutch drum onto the oil pump.
Holding the forward clutch piston by hand, apply compressed air (392 kPa, 4.0 kgf/cm2, 57 psi) to the oil pump to remove the forward clutch piston.
- HINT:
- When the piston cannot be removed as it is slanted, either blow the air again with the protruding side pushed, or remove the piston using needle nose pliers with the tips taped.
5. REMOVE INPUT SHAFT OIL SEAL RING |
Remove the input shaft oil seal ring from the input shaft.