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Home >> Chevrolet >> 2007 >> Avalanche 5.3 3 >> Repair and Diagnosis >> External Pages >> Different car >> Section 892 (Automatic Transmission - 4L80-E/4L85-E - Introduction (2 Of 2)) >> Repair Instructions >> Repair Instructions - Off Vehicle >> Third and Fourth Clutch Accumulator Housing Disassemble

Third and Fourth Clutch Accumulator Housing Disassemble

WARNING: This page is about a different car, the 2007 GMC Yukon XL and 2007 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Inspection Areas On 3rd Clutch Accumulator Piston & Seals
    GM40609Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Apply low pressure compressed air to the hole at the top of the accumulator housing to assist with the piston removal.
  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. Fig 2: Locating 4th Clutch Accumulator Piston & Piston Seal Inspection Areas
    GM40610Courtesy of GENERAL MOTORS CORP.
  4. Remove the 4th clutch accumulator piston pin retainer ring (402).
  5. Remove the 4th clutch accumulator piston (407) and pin (408).
  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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