Center Support Assembly Disassemble

Tools Required

• J 23327  Clutch Spring Compressor. See Special Tools .
• J 38734  Intermediate Spring Compressor Adapter. See Special Tools .

1. Remove the oil cooler pipe fitting seal (690) from the center support assembly (640).
   Fig 1: View Of Oil Cooler Pipe Fitting Seal

   Courtesy of GENERAL MOTORS CORP.
2. Inspect the center support assembly (640) for damage.
3. Using the J 23327  and the J 38734  , compress the intermediate clutch spring assembly (635). See Special Tools .
   Fig 2: Compressing Intermediate Clutch Spring Assembly With J 23327 & J 38734

   Courtesy of GENERAL MOTORS CORP.
4. Remove the intermediate clutch spring retainer ring (634).
5. Remove the J 23327  and the J 38734  . See Special Tools .
6. Remove the intermediate clutch spring assembly (635).
7. Inspect the intermediate clutch spring assembly (635) for collapsed coils and distortion.
8. Remove the intermediate clutch piston (636). Apply compressed air to the center support bolt hole to aid in piston removal.
   Fig 3: Blowing Air Into Center Support Bolt Hole

   Courtesy of GENERAL MOTORS CORP.
9. Remove the inner seal (637) and outer seal (638) from the intermediate clutch piston (636).
   Fig 4: Locating Inspection Areas On Intermediate Clutch Piston

   Courtesy of GENERAL MOTORS CORP.
10. Inspect the intermediate clutch piston (636) for cracks and damage.
11. Remove the direct clutch housing oil seal rings (639) from the center support assembly hub.
    Fig 5: Inspecting Center Support Assembly For Damage Or Wear

    Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Do not disassemble the roller clutch race from the center support assembly (640). If a new center support assembly (640) is required, the support will come with a roller clutch race already installed.
12. Inspect the center support intermediate clutch orifice (530).

    Orifice Specifications:  This needs to be open approximately 0.51 mm (0.020 in).

13. Inspect the oil seal ring pockets for damage.