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Home >> Buick >> 2018 >> Regal Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Power Transfer Unit/Transfer Case - AAM) >> Repair Instructions - Off Vehicle >> Power Transfer Unit Case Cleaning and Inspection >> Power Transfer Unit Input Shaft Cleaning and Inspection

Power Transfer Unit Input Shaft Cleaning and Inspection

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GM3778829
Power Transfer Unit Input Shaft Cleaning and Inspection

Callout Component Name

Preliminary Procedure

  • 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
NOTE:

Inspect for excessive wear, cracks, or damage.

2 Power Transfer Unit Input Shaft - Front Seal Surface
NOTE:

Inspect for pitting, excessive wear, or damage.

3 Power Transfer Unit Input Shaft Gear Teeth
NOTE:

Inspect for excessive wear or damage.

4 Power Transfer Unit Input Shaft - Intermediate Drive Shaft Seal Surface
NOTE:

Inspect for pitting, excessive wear, or damage.

5 Power Transfer Unit Input Shaft Bearing - Rear
NOTE:

Inspect for excessive wear or damage.

6 Power Transfer Unit Input Shaft Bearing - Front
NOTE:

Inspect for excessive wear or damage.