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Home >> Cadillac >> 2017 >> CTS Base, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 255 (Automatic Transmission - 8L45 (M5N) Or 8L90 (M5U) - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> 1-3-5-6-7 Clutch Backing Plate Retaining Ring Measurement

1-3-5-6-7 Clutch Backing Plate Retaining Ring Measurement

WARNING: This page is about a different car, the 2016 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: 1-3-5-6-7 Clutch Backing Plate Retaining Ring
GM3703562Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
Preliminary Procedure 
Install the 1-3-5-6-7 clutch piston and 1-3-5-6-7 clutch plates. Refer to 1-3-5-6-7 Clutch Assemble (8L90)  and 1-3-5-6-7 Clutch Assemble (8L45) 
1 1-3-5-6-7 Clutch Backing Plate
Procedure 
  1. Assemble the tools as shown and clamp the DT-50900  fixture to the bench.
  2. Apply 30 pounds of pressure to the load gauge by turning the screw on the DT-50900  fixture clockwise.
  3. Ensure the plunger of the dial indicator is located on the backing plate.
  4. Zero out the dial indicator
  5. Remove the pressure on the load gauge by turning the screw on the DT-50900  fixture one full turn counterclockwise.
  6. Apply compressed air to the indicated hole on the DT-50905  air adapter and simultaneously adjust the screw on the DT-50900  fixture to apply 30 pounds of pressure to the load gauge.
  7. Observe the dial indicator measurement. Refer to Clutch Backing Plate Retaining Ring Specifications (8L90) and Clutch Backing Plate Retaining Ring Specifications (8L45) to determine the correct 1-3-5-6-7 clutch backing plate retaining ring.

Special Tools 
  • DT-50900  Clutch Travel Support Fixture
  • DT-50902  Adjustable Clutch Spring Compressor
  • DT-50903  Clutch Travel Load Gauge
  • DT-50905  Clutch Air Travel Adapter
  • GE-8001  Dial Indicator Set

For equivalent regional tools, refer to Special Tools