For 1990-2009 cars only
Differential Carrier
- Clean the differential carrier in solvent.
- Inspect for the following conditions:
| • | Damage to threaded bolt holes (1) |
| • | Broken flanges (2) |
| • | Restrictions within the internal oil passages |
| • | Damaged case or cover sealing surfaces |
| • | Damage to the O-ring seal grooves (3) |
| • | Porosity |
Differential Carrier Covers
- Clean the covers in solvent.
- Inspect the left side cover output shaft bushing (3) for damage or excessive wear.
- Inspect the covers for the following conditions:
- Inspect the pump assembly, some models, for damage. Pump should turn freely without noise.
Important: Replacing the left side cover bushing requires a NEW left side cover and a NEW bushing. Replacing only the bushing will result in a low press fit condition. Use new bushings where new covers are available without bushings installed.
| • | Damage to the O-ring seal surface (1) |
| • | Damage to the axle shaft oil seal bores (2) |
| • | Restrictions within the internal oil passages |
| • | Porosity |
| • | Dents or damage to the exterior of the rear cover that may create interference with the pinion shaft |
Drive Pinion Cleaning and Inspection
- Clean the pinion components in solvent.
- Inspect for the following conditions:
| • | Damage to the nut threads or locking area (1) |
| • | Worn or scored bearings (2) |
| • | The pinion housing/cage (4) for damaged bolt holes, broken flanges, restrictions within the oil passages, worn or loose bearing races and/or race bores |
| • | The pinion shaft (5) for damaged threads, worn splines, or worn or scored gear teeth |
| • | The pump drive machining (6) for wear, some models |
