Forward Clutch Assembly

REMOVE OR DISCONNECT

^ Tools Required:
- J 41681 Clutch Spring Compressor





1. Snap ring, direct clutch input hub and forward clutch hub from input shaft.





2. Thrust bearing No 2 race, thrust rear bearing race and forward clutch thrust bearing from input shaft.





3. Temporarily install direct clutch input hub and snap ring into forward clutch.

^ Tool Required:
- J 8001 Dial Indicator Set
- J 26900-13 Magnetic Base





MEASURE
1. Temporarily install forward clutch into the overdrive case.
2. Using J 26900-13 and J 8001, place the J 8001 plunger on the forward clutch piston and apply 392 to 785 kPa (57 to 114 psi) of compressed air into fluid passage at right of cut in overdrive case and measure movement of forward clutch piston.
3. Standard forward clutch piston stroke is 1.40-2.24 mm (0.056-0.088-inch). If forward clutch piston stroke is not within specification, use a 1.8 mm (0.071-inch) or a 2.0 mm (0.079-inch) clutch disc to adjust to specification.
4. Forward clutch from overdrive case.
5. Snap ring and direct clutch input hub from forward clutch hub.





6. Snap ring, clutch plates and discs.





7. Using a J 41681 and a press, compress forward clutch piston return springs and remove snap ring.
8. Forward clutch piston return springs from forward clutch piston.





9. Install forward clutch to overdrive case. Apply low compressed air pressure into fluid passage at right of overdrive case and remove forward clutch piston.
10. Two O-rings from forward clutch piston.





MEASURE
- Forward clutch piston return springs. Standard free length should fall within 15.1 0 mm (0.594-inch). If not within specification, replace piston return springs.

CLEAN
- All forward clutch components and dry thoroughly.

INSPECT
- Forward clutch disc for excessive wear or damage. Replace as necessary.
- Forward clutch piston for cracks or porosity. Replace as necessary.
- That the check ball is free by shaking the piston.
- Apply low compressed air pressure to check ball opening and check for leakage.

INSTALL OR CONNECT

^ Tools Required:
- J 41681 Clutch Spring Compressor

1. New O-ring to forward clutch piston. Lubricate with A/T Fluid.
2. Piston to forward clutch drum.
3. Piston return springs and retaining plate.
4. Using a J 41681 and a press, compress forward clutch piston return springs and install snap ring.
5. Forward clutch disc and plates in the flowing order:
A. Plate
B. Disc
C. Plate
D. Disc
E. Plate
F. Disc
G. Plate
H. Disc
6. Forward clutch snap ring.
7. Forward clutch thrust bearing, thrust rear bearing race thrust bearing No 2 race. Lubricate with J 36850.





8. Forward clutch hub, direct clutch hub and snap ring in that order.