3rd Clutch Assemble

Tools Required

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

Note these items during reassembly:

• Clean all parts thoroughly and dry them with compressed air.
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.
• Use compressed air to clear all passages.
• Apply automatic transmission fluid to all O-ring seals before assembly.
• Soak all clutch fiber plates thoroughly in automatic transmission fluid for a minimum of 30 minutes.

Fig 1: 3rd Clutch Piston & Outer/Inner O-Ring Seal Removed
Courtesy of GENERAL MOTORS CORP.
1. Install a 41.8 x 2.2 mm 3rd clutch piston inner O-ring seal (820).
2. Install a 116.7 x 2.2 mm 3rd clutch piston outer O-ring seal (819).
Fig 2: Installing 3rd Clutch Piston Assembly Into 3rd Clutch Housing
Courtesy of GENERAL MOTORS CORP.
3. Install the 3rd clutch piston assembly (818) into the 3rd clutch housing (821).
   • Apply hand pressure and rotate the 3rd clutch piston assembly.
   • Ensure proper seating.
   • Do not pinch the O-ring seal by installing the piston with excessive force.
Fig 3: 3rd Clutch Piston Spring Cap, Return Spring & Retaining Ring
Courtesy of GENERAL MOTORS CORP.
4. Install the 3rd clutch piston return spring (816).
5. Install the 3rd clutch piston spring cap (815).
6. Place the 3rd clutch piston 42 mm retaining ring (814) on the retainer cap.
Fig 4: 3rd Clutch Disassemble, J 45124, J 23327, J 21420-2, Clutch Piston Return Spring & 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  (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 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: Removing 3rd Clutch Piston Retaining Ring Using Pliers
Courtesy of GENERAL MOTORS CORP.
8. Install the 3rd clutch piston 42 mm retaining ring (814).
9. Remove the tools.
Fig 6: 3rd Clutch Housing & 3rd Clutch Piston Spring Plate
Courtesy of GENERAL MOTORS CORP.
10. Install into the 3rd clutch housing (821) the 3rd clutch piston, spring plate (817) with the cone facing up as shown.
Fig 7: 3rd Clutch Fiber Plate, Steel Flat Plate & Steel Wave Plates
Courtesy of GENERAL MOTORS CORP.
11. Install into the 3rd clutch housing (821) the following components:
    • 3rd clutch steel flat plate (813)
    • 3rd clutch fiber plate (812)
12. Alternately install the above components. Install the 3rd clutch steel wave plates (830) in the top two positions.
Fig 8: 3rd Clutch Selective Backing Plate & 3rd Clutch Fiber Plate
Courtesy of GENERAL MOTORS CORP.
13. Install the 3rd clutch selective backing plate (811) with the flat side facing the last 3rd clutch fiber plate (812) as shown in the insert.
Fig 9: Installing 3rd Clutch Backing Plate Retaining Ring Into Groove Of 3rd Clutch Housing Using J 28585
Courtesy of GENERAL MOTORS CORP.
14. Using J 28585  , install the 3rd clutch backing plate 137 mm retaining ring (810) into the groove of the 3rd clutch housing (831).
15. Measure the clutch backing plate clearance. Refer to Clutch Backing Plate Clearance Measurement .