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Home >> Chevrolet >> 2023 >> Camaro ZL1, 2D Convertible, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 44 (Automatic Transmission - 8L45 - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> 1-2-3-4-5 Reverse Clutch Backing Plate Retaining Ring Measurement >> Special Tools

Special Tools

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Equivalent regional tools: Special Tools

  1. Install the case extension assembly. Case Extension Assembly Installation 
    NOTE:

    For 8L45 models only, prior to performing the 1-2-3-4-5 Reverse Clutch Backing Plate Retaining Ring Measurement, ensure the Rear Output Shaft, Output Carrier, and Reaction Carrier are removed, if previously installed, to prevent interference with the measuring tools. 

  2. Install the 1-2-3-4-5 reverse clutch plate assembly. Reaction Internal Gear and 1-2-3-4-5 Reverse Hub and 1-2-3-4-5 Reverse Clutch Plate Assembly Installation 
  3. GM3977947Courtesy of GENERAL MOTORS COMPANY

    Assemble the tools as shown and apply 80 pounds of pressure to the load gauge by turning the screw on the DT-48056  Spring Compressor Bridge clockwise.

  4. Zero out the dial indicator.
  5. Remove the pressure on the load gauge by turning the screw on the DT-48056  Spring Compressor Bridge one full turn counterclockwise.
  6. CAUTION:

    Regulate the air pressure to 345 kPa (50 psi) maximum. High pressure could cause the piston to over travel and damage the piston seals.

  7. Apply 345 kPa (50 psi) of compressed air to the indicated case passage and simultaneously adjust the screw on the DT-48056  Spring Compressor Bridge to apply 80 pounds of pressure to the load gauge.
  8. Observe the dial indicator measurement. Refer to Clutch Backing Plate Retaining Ring Specifications (8L45) to determine the correct 1-2-3-4-5 reverse clutch backing plate retaining ring.