Power Transfer Unit Cover Housing Cleaning and Inspection

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Fig 1: Identifying Power Transfer Unit Cover Housing Cleaning And Inspection Areas

GM4218762

Courtesy of GENERAL MOTORS COMPANY

Power Transfer Unit Cover Housing Cleaning and Inspection

Callout	Component Name
Preliminary Procedure Clean the power transfer unit case housing in solvent, air dry. Remove all residual input shaft seal material from the input shaft seal bore.
1	Power Transfer Unit Case Cover Housing Threaded Bolt Holes NOTE: Inspect for damage.
2	Power Transfer Unit Case Extension Housing Threaded Bolt Holes NOTE: Inspect for thread damage
3	Power Transfer Unit Case Extension Housing Sealing Surface NOTE: Inspect for scoring or damage.
4	Power Transfer Unit Case Cover Housing Sealing Surface NOTE: Inspect for scoring or damage.
5	Power Transfer Unit Case Cover Housing Sealing Surface NOTE: Inspect for pitting, excessive wear, or damage.
6	Power Transfer Unit Case Cover Housing Bearing Race NOTE: Inspect for brinnelling or excessive wear.
7	Power Transfer Unit Fill Plug Hole NOTE: Inspect for thread damage or sealing surface.