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Home >> Cadillac >> 2005 >> Escalade ESV >> Repair and Diagnosis >> External Pages >> Different car >> Section 150 (Automatic Transmission - 4L80-E/4L85-E - Overhaul) >> Repair Instructions >> Center Support Assembly Disassemble

Center Support Assembly Disassemble

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Tools Required

    Fig 1: View Of Oil Cooler Pipe Fitting Seal & Center Support Assembly
    GM54646Courtesy 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.
    3. Fig 2: Compressing Intermediate Clutch Spring Assembly With J 23327 & J 38734
    GM28695Courtesy 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.
    8. Fig 3: Blowing Air Into Center Support Bolt Hole
    GM28696Courtesy 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.
    9. Fig 4: View Of Intermediate Clutch Piston & Seals
    GM28698Courtesy 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.
    11. Fig 5: View Of Center Support Assembly & Direct Clutch Housing Oil Seal Rings
    GM181740Courtesy of GENERAL MOTORS CORP.
  11. Remove the direct clutch housing oil seal rings (639) from the center support assembly hub.
    12. 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.
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