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Home >> Pontiac >> 2009 >> G8 Base >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 5L40-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis >> Transmission Fluid Pump Disassemble

Transmission Fluid Pump Disassemble

    Fig 1: Locating Reverse Clutch Housing Fluid Seal Rings
    GM801905Courtesy of GENERAL MOTORS CORP.
  1. Remove the reverse clutch housing seal rings (200).
    2. Fig 2: Identifying Pressure Regulator Valve & Line Boost Valve
    GM801906Courtesy of GENERAL MOTORS CORP.
  2. Remove the line boost valve retainer (204).
  3. Remove the line boost valve bushing (206) and the line boost valve (207).
  4. Remove the line boost valve bushing seal (205).
  5. Remove the line boost valve spring (208) and the pressure regulator valve spring (209).
  6. Remove the pressure regulator valve (210).
    7. Fig 3: View Of Pump Cover Screen
    GM801907Courtesy of GENERAL MOTORS CORP.
  7. Remove the fluid pump cover screen pin (211).
  8. Remove the fluid pump cover screen (213).
  9. Remove the fluid pump cover seal (212).
    10. Fig 4: Identifying Pressure Relief Valve & Spring
    GM801908Courtesy of GENERAL MOTORS CORP.
  10. Remove the pressure relief ball pin (211).
  11. Remove the pressure relief spring (238) and the pressure relief ball (239).
    12. Fig 5: TCC Control Valve, Retainer & Spring
    GM801909Courtesy of GENERAL MOTORS CORP.
  12. Remove the torque converter clutch (TCC) control valve pin (204).
  13. Remove the TCC control valve spring (234) and the TCC control valve (235).
    14. Fig 6: Locating Inspection Areas On Input Shaft Bearing
    GM1516266Courtesy of GENERAL MOTORS CORP.
  14. Inspect the input shaft bearing (201) for the following:
    • Damaged bearing cage
    • Pitted bearings
    • Scored bearings
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