2nd Clutch Disassemble

Tools Required

• J 23327  Spring Compressor
• J 28585  Snap Ring Remover
• J 45124  Removable Bridge. See Special Tools .

Fig 1: Removing The 2nd Clutch Backing Plate Retaining Ring Using J 28585
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: The clutch piston spring washer is crimped to the 2nd clutch piston. Do not detach from the piston.
1. Using J 28585  remove the 2nd clutch backing plate retaining ring (739) from the 2nd clutch hub (749).
Fig 2: Selective Clutch Backing Plate Removed
Courtesy of GENERAL MOTORS CORP.
2. Remove the selective clutch backing plate (740) from the 2nd clutch hub.
Fig 3: Exploded View Of 2nd Clutch Hub
Courtesy of GENERAL MOTORS CORP.
3. Remove the fiber plates (741), steel flat plates (742), and the steel wave plates (760) from the 2nd clutch hub (749).
Fig 4: 2nd Clutch Disassemble, J 45124, J 23327 J 21420-2 & Clutch Spring Retainer Cap Retaining Ring
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Position the legs of the J 45124  on the spring retainer cap only where the spring is in contact with the cap. See Special Tools .
4. Using the bridge and legs of the J 45124  (2) with the forcing screw of the J 23327  (1) and J 21420-2 (3) plate of the J 23327  , compress the clutch piston return spring until the groove for the clutch spring retainer cap retaining ring (743) is accessible. See Special Tools .
   • Adjust the legs of the J 45124  to have full contact with the clutch piston return spring retainer cap. See Special Tools .
   • Do not place the legs on the spring retainer cap that is not supported by the spring.
   • Ensure the legs remain in position where the spring retainer cap is in contact with the spring.
Fig 5: 2nd Clutch Piston Return Spring Cap Removed
Courtesy of GENERAL MOTORS CORP.
5. Remove the 2nd clutch piston return spring cap, retaining ring (743) and remove the tools.
Fig 6: 2nd Clutch Housing & Components Removed
Courtesy of GENERAL MOTORS CORP.
6. Remove the following components from the 2nd clutch housing (749):
   • 2nd clutch piston retaining ring (743).
   • 2nd clutch retaining cap (744).
   • 2nd clutch piston return spring (745).
Fig 7: Applying Compressed Air To 2nd Clutch Apply Port
Courtesy of GENERAL MOTORS CORP.
7. Install the 2nd clutch housing (749) onto the 1st/2nd clutch shaft (736).
CAUTION: When you use compressed air in order to clear fluid passages and to dry parts, always aim the air pressure away from face and eyes. Always wear adequate eye protection in order to avoid injury from dirt and debris that may adhere to parts.
8. Apply compressed air to the 2nd clutch apply port located in the 1st/2nd clutch shaft.

   If there is too much air leakage to remove the piston, install the old 1st/2nd clutch shaft fluid passage seals (738).

9. Remove the 2nd clutch piston (746).
Fig 8: 2nd Clutch Piston Inner & Outer Seal
Courtesy of GENERAL MOTORS CORP.
10. Remove the 2nd clutch piston inner seal (748).
11. Remove the 2nd clutch piston outer seal (747).