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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, RWD >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 4L80-E/4L85-E - Overhaul >> Repair Instructions >> Third and Fourth Clutch Accumulator Housing Disassemble

Third and Fourth Clutch Accumulator Housing Disassemble

    IMPORTANT: Apply low pressure compressed air to the hole at the top of the accumulator housing to assist with the piston removal.
    Fig 1: Removing 3rd Clutch Accumulator Piston
    GM40609Courtesy of GENERAL MOTORS CORP.
  1. Remove the 3rd clutch accumulator piston (405) from the 3rd and 4th clutch accumulator housing (51).
  2. Remove the 3rd clutch accumulator piston seals (404, 406).
  3. Inspect the 3rd clutch accumulator piston and seals for porosity, scoring, nicks, scratches and damage.
  4. Remove the 4th clutch accumulator piston pin retainer ring (402).
  5. Remove the 4th clutch accumulator piston (407) and pin (408).
    Fig 2: Removing 4th Clutch Accumulator Piston & Piston Seal
    GM40610Courtesy of GENERAL MOTORS CORP.
  6. Remove the 4th clutch accumulator piston pin (408) from the 4th clutch accumulator piston (407).
  7. Remove the 4th clutch accumulator piston seal (404).
  8. Inspect the 4th clutch accumulator piston, pin and seal for porosity, scoring, nicks, scratches and damage.
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