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Home >> Hummer >> 2006 >> H2 4D Utility Pickup >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 4L60-E/4L65-E/4L70-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis >> Repair Instructions >> Oil Pump Cover Disassemble

Oil Pump Cover Disassemble

    Fig 1: Oil Pump Cover & Components
    GM1552951Courtesy of GENERAL MOTORS CORP.
  1. Remove the oil pump reverse boost valve retaining ring (221).
  2. Remove the reverse boost valve sleeve (220) and the reverse boost valve (219).
  3. Remove the pressure regulator isolator spring (218) and the pressure regulator valve spring (217).
  4. Remove the pressure regulator valve (216).
    5. Fig 2: Oil Pump Converter Clutch Valve Retaining Ring, Stop Valve, Converter Clutch Valve & Converter Clutch Valve
    GM1552952Courtesy of GENERAL MOTORS CORP.
  5. Remove the oil pump converter clutch valve retaining ring (222).
  6. Remove the stop valve (223) and the converter clutch valve (224).
  7. Remove the converter clutch valve (246).
    8. Fig 3: Pressure Relief Bolt Rivet, Pressure Relief Spring, Pressure Relief Ball, Oil Pump Cover Screen & Oil Pump Cover Screen Seal
    GM1552954Courtesy of GENERAL MOTORS CORP.
  8. Remove the pressure relief bolt rivet (227).
  9. Remove the pressure relief spring (229) and the pressure relief ball (228).
  10. Remove the oil pump cover screen (232) and the oil pump cover screen seal (231).
    11. Fig 4: Stator Shaft Oil Seal Rings
    GM1552955Courtesy of GENERAL MOTORS CORP.
  11. Remove the stator shaft oil seal rings (230).
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