Center Support Assembly Disassemble

Tools Required

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

Fig 1: View Of Oil Cooler Pipe Fitting Seal
Courtesy of GENERAL MOTORS CORP.
1. Remove the oil cooler pipe fitting seal (690) from the center support assembly (640).
2. Inspect the center support assembly (640) for damage.
Fig 2: Compressing Intermediate Clutch Spring Assembly With J 23327 & J 38734
Courtesy of GENERAL MOTORS CORP.
3. Using the J 23327  and the J 38734  , compress the intermediate clutch spring assembly (635). See Special Tools .
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.
Fig 3: Blowing Air Into Center Support Bolt Hole
Courtesy of GENERAL MOTORS CORP.
8. Remove the intermediate clutch piston (636). Apply compressed air to the center support bolt hole to aid in piston removal.
Fig 4: Locating Inspection Areas On Intermediate Clutch Piston
Courtesy of GENERAL MOTORS CORP.
9. Remove the inner seal (637) and outer seal (638) from the intermediate clutch piston (636).
10. Inspect the intermediate clutch piston (636) for cracks and damage.
Fig 5: Inspecting Center Support Assembly For Damage Or Wear
Courtesy of GENERAL MOTORS CORP.
11. Remove the direct clutch housing oil seal rings (639) from the center support assembly hub.
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.