1-2-3-4-5 Reverse Clutch Backing Plate Retaining Ring Measurement
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
 Courtesy of GENERAL MOTORS COMPANY
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Preliminary Procedure
- Install the case extension assembly. Refer to Case Extension Assembly Installation
- Install the 1-2-3-4-5 reverse clutch plate assembly. Refer to Reaction Internal Gear and 1-2-3-4-5 Reverse Hub and 1-2-3-4-5 Reverse Clutch Plate Assembly Installation .
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1-2-3-4-5-Reverse Clutch Backing Plate Procedure
- Assemble the tools as shown and apply 80 pounds of pressure to the load gauge by turning the screw on the DT-48056
bridge clockwise.
- Zero out the dial indicator.
- Remove the pressure on the load gauge by turning the screw on the DT-48056
bridge one full turn counterclockwise.
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.
- Apply 345 kPa (50 psi) of compressed air to the indicated case passage and simultaneously adjust the screw on the DT-48056
bridge to apply 80 pounds of pressure to the load gauge.
- Observe the dial indicator measurement. Refer to Clutch Backing Plate Retaining Ring Specifications
to determine the correct 1-2-3-4-5 reverse clutch backing plate retaining ring.
Special Tools
- DT-48056
Spring Compressor Bridge
- DT-50902
Adjustable Clutch Spring Compressor
- DT-50903
Clutch Travel Load Gauge
- DT-51328
Clutch Compressor and Air Travel Check Rod Extension
- GE-8001
Dial Indicator Set
Equivalent regional tools:Special Tools
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