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Home >> Pontiac >> 2006 >> Vibe Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Automatic Transmission - Mu4 - Overhaul) >> Repair Instructions >> Direct Clutch Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Measuring Direct Clutch Piston Stroke Using J 7872 With Compressed Air
    GM164945Courtesy of GENERAL MOTORS CORP.
  1. Use a J 7872  in order to measure the direct clutch piston stroke before disassembly. See Special Tools .
    1. Temporarily install the direct clutch assembly onto the fluid pump (2) and place the J 7872  plunger on the direct clutch piston (1). See Special Tools .
    2. Apply 392-785 kPa (57-114 psi) of compressed air into the direct clutch apply passage of the fluid pump and observe the J 7872  . See Special Tools .
    3. The standard direct clutch piston stroke is greater or less than specified, inspect all direct clutch components for excessive wear.
    4. Standard direct clutch piston stroke 1.12-1.52 mm (0.0441-0.0598 in).
    2. Fig 2: View Of Direct Clutch Snap Ring In Direct Clutch Drum
    GM164947Courtesy of GENERAL MOTORS CORP.
  2. Remove the direct clutch snap ring (1) from the direct clutch drum (2).
    3. Fig 3: Direct Clutch & Forward Clutch Assemblies
    GM164336Courtesy of GENERAL MOTORS CORP.
  3. Remove the direct clutch assembly (1) from the forward clutch assembly (2).
    4. Fig 4: Identifying Forward Clutch Inner Thrust Bearing
    GM164339Courtesy of GENERAL MOTORS CORP.
  4. Remove the forward clutch inner thrust bearing (4) from the center of the forward clutch drum.
  5. Remove the direct clutch thrust washer (2) from the top of the forward clutch assembly (3).
  6. Remove the forward clutch outer thrust bearing (1) from the top of the forward clutch drum.
    7. Fig 5: View Of Direct Clutch Drum
    GM164957Courtesy of GENERAL MOTORS CORP.
  7. Remove the following components from the direct clutch drum (1):
    • The direct clutch flange
    • 3 discs
    • 3 plates
    8. Fig 6: Removing & Installing Direct Clutch Piston Return Spring Snap Ring With J 23327
    GM164959Courtesy of GENERAL MOTORS CORP.
  8. Use a J 23327  and a hydraulic press in order to remove the direct clutch piston return spring snap ring (1) from the direct clutch piston return spring retainer.
    9. Fig 7: Locating Direct Clutch Piston Return Springs
    GM164960Courtesy of GENERAL MOTORS CORP.
  9. Remove the direct clutch piston return springs (2) from the direct clutch piston (1).
    10. IMPORTANT: When using compressed air to remove components, air pressure should not exceed 98 kPa (14 psi).
    Fig 8: Blowing Air Into Direct Clutch Apply Passage Of Fluid Pump
    GM164964Courtesy of GENERAL MOTORS CORP.
  10. Remove the direct clutch piston (1) from the direct clutch drum by temporarily installing the direct clutch assembly onto the fluid pump (2). Apply low pressure compressed air into the direct clutch apply passage of the fluid pump.
  11. Remove the direct clutch piston seals from the direct clutch piston.
  12. Clean all the direct clutch components and dry the components thoroughly.
  13. Inspect the direct clutch discs for excessive wear or damage. Replace the components as necessary.
  14. Inspect the direct piston for cracks or porosity and replace as necessary.
    15. Fig 9: Inspecting Direct Clutch Piston Check Ball Operation By Applying Compressed Air
    GM164965Courtesy of GENERAL MOTORS CORP.
  15. Inspect the direct clutch piston check ball (2) operation by applying compressed air into the working and release sides of the direct clutch piston (1, 3). There must be no air leakage on the working side. Air must pass freely through the release side. If these conditions do not exist, replace the direct clutch piston.
  16. Inspect the direct clutch piston return spring for distortion or weakness and replace as necessary.
    17. Fig 10: Illustrating Maximum Inside Diameter Of The Direct Clutch Bushing
    GM164967Courtesy of GENERAL MOTORS CORP.
  17. Use the J 26900-6  in order to measure the inside diameter of the direct clutch bushing (1). See Special Tools .
    • The maximum inside diameter of the direct clutch bushing is 48.270 mm (1.9004 in)
    • If the inside diameter of the direct clutch house bushing is greater than specified, replace the direct clutch drum
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