Power Transfer Unit Input Shaft Cleaning and Inspection

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedures Clean the power transfer unit input shaft in cleaning solvent and air dry. The case halves, internal gears and bearings are not serviceable components. If damage is present, the power transfer unit must be replaced as an assembly.
1	Power Transfer Unit Input Shaft Splines Procedure Inspect for excessive wear, cracks, or damage.
2	Power Transfer Unit Input Shaft - Front Seal Surface Procedure Inspect for pitting, excessive wear, or damage.
3	Power Transfer Unit Input Shaft Gear Teeth Procedure Inspect for excessive wear or damage.
4	Power Transfer Unit Input Shaft - Intermediate Drive Shaft Seal Surface Procedure Inspect for excessive wear or damage.
5	Power Transfer Unit Input Shaft Bearing - Rear Procedure Inspect for excessive wear or damage.
6	Power Transfer Unit Input Shaft Bearing - Front Procedure Inspect for excessive wear or damage.