4-5-6 Clutch Backing Plate Retaining Ring Measurement

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Fig 1: Measuring 4-5-6 Clutch Backing Plate Retaining Ring

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedures Install the clutch assembly into a hole in the workbench Zero out the dial indicator on the DT 47868-1 . See Special Tools . Special Tools DT 47868-1 Pack Travel Weight. See Special Tools . J 8001 Dial Indicator Set J 26900-13 Magnetic Base. See Special Tools .
1	4-5-6 Clutch Apply Passage Tip: While using one finger to block the top passage hole on the turbine shaft, apply compressed air to the opposite top passage hole, and observe the dial indicator measurement. Refer to Clutch Backing Plate Retaining Ring Specifications (6L80) or Clutch Backing Plate Retaining Ring Specifications (6L90) to determine the correct retainer.

Callout

Component Name

Preliminary Procedures

Install the clutch assembly into a hole in the workbench
Zero out the dial indicator on the DT 47868-1 . See Special Tools .

Special Tools

DT 47868-1 Pack Travel Weight. See Special Tools .
J 8001 Dial Indicator Set
J 26900-13 Magnetic Base. See Special Tools .

4-5-6 Clutch Apply Passage
Tip: While using one finger to block the top passage hole on the turbine shaft, apply compressed air to the opposite top passage hole, and observe the dial indicator measurement. Refer to Clutch Backing Plate Retaining Ring Specifications (6L80) or Clutch Backing Plate Retaining Ring Specifications (6L90) to determine the correct retainer.