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Home >> Chevrolet >> 2005 >> Silverado 1500 HD, RWD >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 4L80-E/4L85-E - Overhaul >> Repair Instructions >> Transmission Oil Pump Cover Assemble

Transmission Oil Pump Cover Assemble

    Fig 1: View Of TCC Shift Valve Components
    GM31197Courtesy of GENERAL MOTORS CORP.
  1. Install the TCC shift valve spring seat pin (211) into the oil pump cover (206).
  2. Install the TCC shift valve spring seat (225).
  3. Install the TCC shift valve spring (224).
  4. Install the TCC shift valve (223).
  5. Install the pressure regulator (TCC shift) valve bore plug (232).
  6. Install the TCC shift valve bore plug retainer ring (221).
  7. Inspect the TCC shift valve (223) for free movement in the bore.
    8. Fig 2: View Of TCC Enable Valve Components
    GM31198Courtesy of GENERAL MOTORS CORP.
  8. Install the TCC enable valve (217) into the oil pump cover (206).
  9. Install the TCC enable valve spring (216).
  10. Compress the TCC enable valve spring (216), and insert a small rod into the fluid passage in order to retain the TCC enable valve spring.
  11. Install the TCC enable valve spring retainer sleeve (215).
  12. Remove the small rod.
  13. Inspect the TCC enable valve (217) for free movement in the bore.
    14. Fig 3: View Of Converter Regulator Valve Components
    GM31199Courtesy of GENERAL MOTORS CORP.
  14. Install the converter regulator valve (214) into the oil pump cover (206).
  15. Install the converter regulator valve spring (213).
  16. Install the converter regulator valve bore plug (212).
  17. Install the converter regulator valve bore plug pin (211).
  18. Inspect the converter regulator valve (214) for free movement in the bore.
    19. Fig 4: View Of Pressure Regulator Valve Components
    GM31200Courtesy of GENERAL MOTORS CORP.
  19. Install the pressure regulator valve bore plug pin (211) into the oil pump cover (206).
  20. Install the pressure regulator valve bore plug (232).
  21. Install the pressure regulator valve (231).
  22. Install the pressure regulator valve inner (238) and outer (230) springs.
  23. Install the pressure regulator valve spring retainer (229).
  24. Assemble the reverse boost valve (228) into the reverse boost valve bushing (227) with the reverse boost valve stem facing out of the bushing.
  25. Install the reverse boost valve assembly (227, 228).
  26. Install the reverse boost valve bushing retainer ring (226).
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