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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 132 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (2 Of 2)) >> Repair Instructions >> Repair Instructions - On Vehicle >> Accumulator Assembly, Spacer Plate, and Gaskets >> Removal Procedure

Removal Procedure

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    Fig 1: View Of 1-2 Accumulator Cover & Bolts
    GM14464Courtesy of GENERAL MOTORS CORP.
  1. Remove the transmission filter. Refer to Automatic Transmission Fluid and Filter Replacement .
    2. IMPORTANT: The 1-2 accumulator can be removed without removing the valve body.
  2. Remove the valve body. Refer to Valve Body and Pressure Switch Replacement .
  3. Remove the accumulator cover bolts.
  4. Remove the 1-2 accumulator cover.
    5. Fig 2: View Of 1-2 Accumulator Cover & Pin Assembly
    GM1220924Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: regular production option (RPO) M33 transmissions do not use a 1-2 accumulator spring inner (104).
  5. Remove the 1-2 accumulator cover (57) and pin.
  6. Disassemble the 1-2 accumulator assembly (54, 56, 57, 104).
  7. Inspect the 1-2 accumulator springs for cracks.
    8. Fig 3: View Of Accumulator Piston Seal & Accumulator Piston
    GM298143Courtesy of GENERAL MOTORS CORP.
  8. Remove the 1-2 accumulator piston seal (1) from the 1-2 accumulator piston.
  9. Inspect the 1-2 accumulator piston for the following conditions:
    • Porosity
    • Cracks
    • Scoring
    • Nicks and scratches
    10. Fig 4: Inspecting 1-2 Accumulator Cover
    GM7734Courtesy of GENERAL MOTORS CORP.
  10. Inspect the 1-2 accumulator cover for the following conditions:
    • Porosity
    • Cracks
    • Scoring
    • Nicks and scratches
    11. Fig 5: View Of Spacer Plate Support & Bolts
    GM14468Courtesy of GENERAL MOTORS CORP.
  11. Remove the spacer plate support bolts.
    12. IMPORTANT: Use care not to drop the following items that will be removed along with the spacer plate:
    • The number 1 checkball
    • The 3-4 accumulator spring
    • The 3-4 accumulator pin
  12. Remove the spacer plate support.
    13. Fig 6: View Of Spacer Plates & Spacer Plate Body Gasket
    GM14469Courtesy of GENERAL MOTORS CORP.
  13. Remove the spacer plate to valve body gasket, the spacer plate and the spacer plate to transmission case gasket.
    14. Fig 7: Identifying 3-4 Accumulator Piston
    GM647519Courtesy of GENERAL MOTORS CORP.
  14. Remove the 3-4 accumulator piston (2).
  15. Inspect the 3-4 accumulator spring for cracks.
    16. Fig 8: View Of Accumulator Piston Seal & Accumulator Piston
    GM298143Courtesy of GENERAL MOTORS CORP.
  16. Remove the 3-4 accumulator piston seal (1) from the 3-4 accumulator piston.
  17. Inspect the 3-4 accumulator piston for the following conditions:
    • Porosity
    • Cracks
    • Scoring
    • Nicks and scratches
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