Overdrive Clutch Assembly: Assembly
- Install the 2 scarf cut seals and the roller bearing.
- Install a new outer O-ring seal on the overdrive clutch balance piston.
- Install 2 new inner O-ring seals on the overdrive clutch apply piston.
- Lubricate all the O-ring seals with clean automatic transmission fluid. Install the overdrive clutch apply piston into the drum with the O-ring seals and the 3 pads facing down toward the drum.
- Install the overdrive clutch return spring.
- Lubricate all the O-ring seals with clean automatic transmission fluid. Install the overdrive clutch balance piston.
- Using the special tool, install a new overdrive clutch balance piston retaining ring.
- Install the new overdrive clutch plates, starting with the wave spring then a steel plate and alternating between friction and steel plates, and ending with the pressure plate on the top.
- Install the overdrive clutch pack snap ring.
- Install the overdrive clutch assembly into the special tool so the dial indicator fits into the opening of the snap ring.
- With the dial indicator set at zero, lift up on the steel pressure plate so it is against the select fit snap ring. Record this reading as reading A.
- Rotate the overdrive clutch assembly 180 degrees from the opening of the snap ring, take a second reading and record this reading as reading B.
Description Reading Reading A Reading B Add reading A to reading B for a total end clearance Divide the total reading by 2 for an average end clearance - 5.4L engine - 0.5-0.9 mm (0.019-0.035 in).
- If the free pack end clearance between the bottom of the snap ring and the top of the pressure plate is high, remeasure using a thicker select fit snap ring. If the free pack end clearance between the bottom of the snap ring and the top of the pressure plate is low, remeasure using a thinner select fit snap ring.
- Install a new thrust bearing (T3).
NOTE:
The fingers on the return spring are facing down toward the piston.
NOTE:
The cone shape of the balance piston must face up when installed correctly.
Fig 7: Identifying Overdrive Clutch Balance Piston Retaining Ring Using Special Tool (307-209) & A Press
NOTE:
All overdrive clutch plates, friction and steel are of a wave-type design.
NOTE:
If the final measurement is not within specification, install a new snap ring until the correct specification is achieved.
NOTE:
Inspect and install new thrust bearings as required.