With C6

DISASSEMBLE

CAUTION: All parts must be handled carefully to avoid nicking or burring the bearing or mating surfaces. Lubricate all internal parts with clean automatic transmission fluid before assembling them. Do not use any other lubricants except on gaskets and thrust washers. These may be coated with petroleum jelly to facilitate assembly. Always use new gaskets and seals when assembling transmission.

Removing Clutch Pressure Plate Snap Ring:

1. Remove pressure plate snap ring.

Forward Clutch Disassembled:

2. Disassemble clutch.

Removing Or Installing Disc Spring:

3. Remove snap ring that secures disc spring in clutch cylinder and remove disc spring.

Removing Forward Clutch Piston:

4. Apply air pressure to clutch apply passage in cylinder to remove piston.
5. Remove seals from piston and clutch hub as shown in the Forward Clutch Disassembled image.

ASSEMBLE
1. Dip new seals in transmission fluid. Install smaller seal on clutch hub and the other seal on piston.
2. Install clutch piston.
3. Ensure steel pressure ring is in groove on piston. Position disc spring in cylinder with convex (dished) face downward. Install spring as shown in the Removing Or Installing Disc Spring image. Secure disc with snap ring.
4. Install forward pressure plate with flat side up and beveled side down. Dip clutch plates in transmission fluid. Install wave plate, then a steel plate and a composition driven plate. Install remaining plates in this sequence. The last plate installed will be the rear pressure plate as shown in the Forward Clutch Disassembled image.

NOTE: Install snap ring, making sure it is seating in the groove. If new composition plates are to be used, they should be soaked in transmission fluid for 15 minutes prior to assembly.

Checking Forward Clutch Snap Ring Clearance:

5. With feeler gauge, check clearance between snap ring and pressure plate. Downward pressure on plate should be maintained when making this check. Clearance should be 0.021-0.046 inch. If not, selective thickness snap rings are available in thicknesses of 0.056-0.060 inch, 0.065-0.069 inch, 0.074-0.078 inch, 0.083-0.087 inch, 0.092-0.096 inch, 0.110-0.114 inch and 0.128-0.132 inch. Install correct thickness snap ring and recheck clearance.