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Home >> Chevrolet >> 2008 >> Optra LT, Automatic >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transaxle - AISIN 81-40LE - Service, Overhaul, Removal & Installation & Diagnosis >> Control Valve Body Disassemble

Control Valve Body Disassemble

    Fig 1: View Of Primary Regulator Valve
    GM1248118Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Because the line pressure is changed by the position of the pin and groove in the sleeve end, be sure to check the position.
  1. Write down the relative position of the primary regulator valve sleeve, plug, and pin.
  2. Remove the manual valve.
  3. Fig 2: Identifying Shift Solenoid Valve Bolts
    GM1248123Courtesy of GENERAL MOTORS CORP.
  4. Remove the 5 bolts (1) and 5 shift solenoid valves.
  5. Fig 3: View Of Control Valve Body And Bolts
    GM1248119Courtesy of GENERAL MOTORS CORP.
  6. Remove the 15 bolts.
  7. Fig 4: View Of Control Valve Body, Cover, Gaskets And Plate
    GM1248120Courtesy of GENERAL MOTORS CORP.
  8. Remove the cover, the 2 gaskets, and the plate.
  9. Fig 5: Identifying Spring, Check Valve And Check Ball
    GM1248125Courtesy of GENERAL MOTORS CORP.
  10. Remove the spring, check valve, and check ball.
  11. Remove the bolt, spring seat, spring, and ball.
  12. Turn over the valve body.
  13. Fig 6: View Of Valve Body And Bolts
    GM1248127Courtesy of GENERAL MOTORS CORP.
  14. Remove the 2 bolts from the valve body.
  15. Fig 7: View Of Upper Valve Body And Lower Valve Body
    GM1248126Courtesy of GENERAL MOTORS CORP.
  16. Remove the upper valve body from the lower valve body with the plate.
  17. Fig 8: View Of Valve Body Plate And Lower Valve Body
    GM1248124Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Be careful that the check balls do not fall out.
  18. Remove the valve body plate from the lower valve body.