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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1830 (Automatic Transaxle - 4T45-E - Introduction (2 Of 2)) >> Repair Instructions >> Repair Instructions - Off Vehicle >> Channel Plate Assembly Disassemble

Channel Plate Assembly Disassemble

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Accumulator Piston Seals
    GM55115Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The accumulator pins are pressed into the channel plate (27). Do not remove the accumulator pins.
  1. Remove the three accumulator pistons (29) from the channel plate (27).
    2. IMPORTANT: The 1-2 accumulator assist spring (125) has a retainer that presses into the spring. Keep the retainer and the spring together as an assembly.
  2. Remove the 1-2 accumulator assist spring (125).
  3. Remove the 2-3 accumulator assist spring (47).
  4. Remove the seals (30) from the accumulator pistons (29).
  5. Discard the accumulator piston seals (30).
  6. Remove the manual valve (800) from the channel plate (27).
    7. Fig 2: Inspection Areas On Channel Plate
    GM55117Courtesy of GENERAL MOTORS CORP.
  7. Inspect the channel plate (27) for damage.
  8. inspect the channel plate (27) passages for debris.
  9. Inspect the accumulator pistons (29), the assist springs (47, 125), and the pins for damage.
  10. Inspect the channel plate sleeve for wear from the turbine shaft.
  11. Inspect the channel plate (27) bolt holes for stripped threads and debris.
  12. Inspect the channel plate machined surface for nicks or scratches that could cause a fluid leak.
  13. Inspect the manual valve (800) for freedom of movement.
  14. Inspect the drive sprocket to channel plate thrust washer (34).
  15. Clean and dry each component.
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