For 1990-2009 cars

Warning: Refer to Safety Glasses Warning in the Preface section.

1. Clean the differential case in solvent.
2. Inspect the differential case for the following conditions:

• | 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)

Warning: Refer to Safety Glasses Warning in the Preface section.

3. Clean the pinion gear in solvent.
4. Inspect the pinion gear for the following conditions:

• | 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)

Warning: Refer to Safety Glasses Warning in the Preface section.

5. Clean the ring gear in solvent.
6. Inspect the ring gear for the following conditions:

• | Damage to the threaded holes (1)

• | Unusual wear or heat discoloration to the gear teeth (2)

Warning: Refer to Safety Glasses Warning in the Preface section.

7. Clean the pinion flange in solvent.
8. Inspect the pinion flange for the following conditions:

• | Splines for wear, pitting or twisting (1)

• | Sealing surface for grooves or pitting (2)