Overdrive Clutch Assembly

Overdrive Clutch Assembly

Special Tool(s):

Material:

Overdrive Clutch Assembly:

Disassembly
1. Remove the thrust bearing (T3).





2. Remove the overdrive clutch pack snap ring.





3. Remove the overdrive clutch pack.





4. Using the special tool and a press, remove and discard the overdrive clutch balance piston retaining ring and keep the original spacer.





5. Remove the overdrive clutch balance piston.





6. Remove the overdrive clutch return spring.





7. Remove the overdrive clutch apply piston.





8. Remove and discard the outer O-ring seal on the overdrive clutch balance piston.





9. Remove and discard both the inner (one large and one small) O-ring seals on the overdrive clutch apply piston.





10. NOTE: The roller bearing may stick to the forward clutch assembly.

Remove and discard the 2 scarf cut seals and the roller bearing.





Assembly
1. Install the 2 scarf cut seals and the roller bearing.





2. Install a new outer O-ring seal on the overdrive clutch balance piston.





3. Install 2 new inner O-ring seals on the overdrive clutch apply piston.





4. 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.





5. NOTE: The fingers on the return spring are facing down toward the piston.

Install the overdrive clutch return spring.





6. NOTE: The cone shape of the balance piston must face up when installed correctly.

Lubricate all the O-ring seals with clean automatic transmission fluid. Install the overdrive clutch balance piston.





7. Using the special tool, install a new overdrive clutch balance piston retaining ring and the original spacer.





8. 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.





9. Install the overdrive clutch pack snap ring.





10. NOTE: All overdrive clutch plates friction and steel are of a wave-type design.

Install the overdrive clutch assembly into the special tool so the dial indicator fits into the opening of the snap ring.





11. 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.
12. Rotate the overdrive clutch assembly 180° from the opening of the snap ring, take a second reading and record this reading as reading B.





13. NOTE: If the final measurement is not within specification, install a new snap ring until the correct specification is achieved.
^ 4.6L 3V engine - 0.3 - 0.7 mm (0.011 - 0.027 inch).

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.

14. NOTE: Inspect and install new thrust bearings as required.

Install a new thrust bearing (T3).