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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 132 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (2 Of 2)) >> Repair Instructions >> Repair Instructions - Off Vehicle >> 3-4 Accumulator Installation

3-4 Accumulator Installation

WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying 3-4 Accumulator Piston & Piston Oil Seal Ring
    GM1730059Courtesy of GENERAL MOTORS CORP.
  1. Inspect the 3-4 accumulator piston (44) for the following conditions:
    • Porosity
    • Cracks
    • Scoring
    • Nicks and scratches
  2. Install the 3-4 accumulator piston oil seal ring (45) on the 3-4 accumulator piston (44).
    3. Fig 2: Identifying 3-4 Accumulator Piston & Accumulator Spring
    GM1730065Courtesy of GENERAL MOTORS CORP.
  3. Install the 3-4 accumulator piston (44) and seal assembly into the bore.
  4. Inspect the 3-4 accumulator spring (46) for cracks.
    5. IMPORTANT: Some models do not use a 3-4 accumulator spring.
  5. Install the 3-4 accumulator spring.
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