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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (2 Of 2)) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Oil Pump Cover Disassemble

Oil Pump Cover Disassemble

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
    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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