For 1990-2009 cars only
Differential Case
- Clean the differential case in solvent.
- Inspect the differential case for the following conditions:
- Inspect the gears for the following conditions:
- Clean the pinion gear in solvent.
- Inspect the pinion gear for the following conditions:
- Clean the ring gear in solvent.
- Inspect the ring gear for the following conditions:
- Clean the pinion flange in solvent.
- Inspect the pinion flange for the following conditions:
Caution: Refer to Safety Glasses Caution in the Preface section.
| • | Chips or cracks |
| • | Damage to the bolts holes (1) |
| • | Unusual wear, grooves or scoring |
| • | Damaged side bearing flanges (2) |
| • | Heat discoloration |
| • | Worn differential pin bores (3) |
| • | Pitting or heat discoloration |
| • | Unusual wear or scoring in the pinion gear pin bores (2) |
| • | Unusual wear, grooves or scoring on the differential pin (3) |
| • | Scored or worn side gear washers (5) and pinion gear washers (1) |
| • | Unusual wear or grooves on the axle side gear splines (4) |
Caution: Refer to Safety Glasses Caution in the Preface section.
| • | Unusual gear teeth wear, pitting or heat discoloration (1) |
| • | Pinion splines for wear, pitting or twisted splines (2) |
| • | Pinion shaft thread condition (3) |
| • | Ensure pinion gear end is not bent or burred over on the end (4) |
Caution: Refer to Safety Glasses Caution in the Preface section.
| • | Damage to the threaded holes (1) |
| • | Unusual wear or heat discoloration to the gear teeth (2) |
Caution: Refer to Safety Glasses Caution in the Preface section.
| • | Splines for wear, pitting or twisting (1) |
| • | Sealing surface for grooves or pitting (2) |
Bearings and Races
- Inspect the bearing rollers and races for the following conditions:
- Inspect the bearing rollers and races for heat discoloration.
- Inspect for bent bearing cages.
- Inspect for damaged bearing cages.
| • | Pitting |
| • | Scoring or grooves |
| • | Excessive wear or other damage |
Heat discoloration ranges from a faint yellow to a dark blue color. This discoloration may result from an overload or improper lubrication. Excessive heat causes softening of the rollers and races. Bearings or races with sign of heat discoloration must be replaced.
