Differential Components
WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
- Clean the planetary differential in cleaning solvent. Do not disassemble the planetary differential.
- Air dry, and ensure all cleaning solvent is removed from the bushings in the pinion gears (3). Do not spin the pinion gears with compressed air.
- Inspect the pinion gears for chipped teeth.
- Inspect the pinion gears for debris embedded in the root of the teeth.
- Inspect the pinion gears for excessive side movement from worn bushings or shafts.
- Inspect the planetary differential assembly for cracks at the web (1) of the housing.
- Inspect the thrust washer surface (2) for scoring or excessive wear.
- Inspect the planetary differential for distortion.
- Inspect the planetary differential to mainshaft splines for excessive wear.
- Replace the planetary differential if any of the above conditions are found.
- Inspect the thrust washers for excessive wear or scoring.
- Replace the thrust washers if they are faulty.
- Clean the front sun gear (1), the rear sun gear (2), and the inner lockup hub (3) in cleaning solvent and air dry.
- Inspect the teeth on the front sun gear (1), the rear sun gear (2), and the inner lockup hub (3) for the following conditions:
- Chipped teeth
- Excessively worn gear surfaces
Slight wear marks are normal.
- Debris embedded in the root of the teeth
- Inspect the thrust washer surfaces for excessive wear or scoring.
- Replace the front sun gear (1), the rear sun gear (2), and the inner lockup hub (3) if they are faulty.
- If necessary, disassemble the lockup shift assembly. Refer to Transfer Case Disassemble and Transfer Case Assemble .
- Clean the lockup shift assembly components in cleaning solvent and air dry.
- Inspect the lockup shift hub engagement teeth for the following conditions:
- Chipped teeth
- Excessively worn gear surfaces
- Slight wear marks are normal.
- Debris embedded in the root of the teeth
- Replace the lockup shift assembly if it is faulty. The lockup shift assembly components are not serviced separately.