1st/Coast Clutch Disassemble

Tools Required

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

Fig 1: 1st Clutch Backing Plate Retaining Ring & Components Removed
Courtesy of GENERAL MOTORS CORP.
1. Using J 28585  , remove the 1st clutch backing plate retaining ring (700).
2. Remove the selective 1st clutch backing plate (701).
3. Remove the 1st clutch steel (703) and fiber plates (702).
IMPORTANT: The coast clutch piston spring washer (711) is not detachable from the coast clutch piston (712) and is not shown.
4. Remove the 1st clutch spring plate (704).
5. Remove the coast clutch backing plate (705).
6. Remove the coast clutch steel (707) and fiber plates (706).
Fig 2: 1st/Coast Clutch Disassemble, J 45124, J 23327 & 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 .
7. Using the bridge and legs of the J 45124  (2) with the forcing screw of the J 23327  (3) and J 21420-2 (1) plate of the J 23327  compress the clutch piston return spring (710) until the groove for the clutch spring retainer cap retaining ring (708) is accessible. See Special Tools .
   • Adjust the legs of the J 45124  to have full contact with the clutch piston return spring retainer cap (709). See Special Tools .
   • Ensure the legs remain in position where the spring retainer cap is in contact with the spring.
Fig 3: Retaining Ring, Return Spring Cap & Clutch Return Spring Removed
Courtesy of GENERAL MOTORS CORP.
8. Remove the retaining ring (708), return spring cap (709), and the clutch return spring (710).
9. Remove the tools.
Fig 4: Applying Compressed Air Into Center Fluid Passage Hole Of 1st & 2nd Clutch Shaft
Courtesy of GENERAL MOTORS CORP.
10. Install the 1st/coast clutch housing assembly (718) back 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.
11. Apply compressed air into the center fluid passage hole of the 1st, 2nd clutch shaft (736) to remove the 1st clutch piston (715) and the coast clutch piston (712) from the 1st and coast clutch housing (718).

    The 1st/coast clutch housing fluid passage seals (735) may have to be installed to prevent air leakage.

Fig 5: Inner, Outer O-Ring Seals & Piston Assemblies
Courtesy of GENERAL MOTORS CORP.
12. Remove the inner (714), (717a) and (717b) and outer O-ring seals (713) and (716) from the piston assemblies (712, 715).