Power Transfer Unit Case Extension Housing Cleaning and Inspection

WARNING: This page is about a different variant/trim than selected.

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

Courtesy of GENERAL MOTORS COMPANY

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 Extension Housing - Model Dependent NOTE: Inspect for excessive wear, cracks, or damage. The power transfer unit case assembly must be replaced if damage is present.
2	Power Transfer Unit Actuator Worm Gear Sleeve NOTE: Inspect for excessive wear or damage. Replace if needed.
3	Power Transfer Unit Actuator Worm Gear Bearing NOTE: Inspect for excessive wear or damage. Replace if needed.
4	Power Transfer Unit Intermediate Drive Shaft Seal Surfaces NOTE: Repair small scratches or nicks with a soft stone.
5	Power Transfer Unit Case Extension Housing Adapter Threaded Bolt Holes NOTE: Repair any damaged threads.
6	Power Transfer Unit Case Extension Housing Threaded Bolt Holes NOTE: Repair any damaged threads.