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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 4L80-E/4L85-E - Overhaul >> Repair Instructions >> Fourth Clutch Assembly Disassemble

Fourth Clutch Assembly Disassemble

Tools Required

  1. Remove the fourth clutch backing plate retainer ring (523).
    Fig 1: Identifying Fourth Clutch Backing Plate Retainer Ring
    GM335050Courtesy of GENERAL MOTORS CORP.
  2. Remove the fourth clutch backing plate (524).
    Fig 2: View Of Fourth Clutch Plates
    GM335051Courtesy of GENERAL MOTORS CORP.
  3. Remove the fourth clutch plates (525, 526).
  4. Place the fourth clutch housing (529) onto the J 38731-3  . See Special Tools .
  5. Using the J 38882  and the J 23327  , compress the fourth clutch spring assembly (532). See Special Tools .
  6. Remove the fourth clutch spring retainer ring (533).
    Fig 3: Identifying Fourth Clutch Spring Retainer Ring
    GM335052Courtesy of GENERAL MOTORS CORP.
  7. Remove the J 38882  and the J 23327  . See Special Tools .
  8. Remove the fourth clutch spring assembly (532).
  9. Remove the fourth clutch piston (528).
  10. Remove the fourth clutch piston inner seal (527).
    Fig 4: Locating Fourth Clutch Orifice
    GM335053Courtesy of GENERAL MOTORS CORP.
  11. Remove the fourth clutch piston outer seal (531) from the fourth clutch housing (529).
  12. Inspect the fourth clutch orifice (530).

    Orifice Specification:  The small hole in the orifice should be open approximately 0.51 mm (0.020 in).