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 COMPANY

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 pack travel weight. Special Tools DT-47868-1 Pack Travel Weight GE-8001 Dial Indicator Set GE-26900-13 Magnetic Base Equivalent regional tools: Special Tools
1	4-5-6 Clutch Backing Plate Retaining Ring Procedure 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)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 pack travel weight.

Special Tools

DT-47868-1 Pack Travel Weight
GE-8001 Dial Indicator Set
GE-26900-13 Magnetic Base

Equivalent regional tools: Special Tools

4-5-6 Clutch Backing Plate Retaining Ring
Procedure
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)Clutch Backing Plate Retaining Ring Specifications (6L90) to determine the correct retainer.