Cleaning & Inspection

1. Clean components in suitable solvent and blow dry with compressed air, noting the following:
a. Do not use brush when cleaning bearings.
b. Do not ``spin dry'' bearings as they will be damaged.
c. Lightly lubricate components after cleaning to retard corrosion.
d. Keep all components in order to ensure proper assembly.
2. Inspect gears for cracks, chipped or broken teeth, wear and scoring. Replace gears that are damaged or excessively worn. Ring gear and pinion must be replaced as an assembly.
3. Inspect differential case for cracks, damage, distortion, and worn or scored side gear bores and bearing surfaces. Replace case if damaged or scored.
4. Inspect axle and pinion housings for scored bearing mount surfaces, cracks and distortion, and replace as needed. Ensure that housing is clean and free from foreign material.
5. Inspect bearing rollers and races for pitting, scoring, overheating and damage.
6. Mate each bearing with race and check operation.
7. Replace any bearing assembly that is damaged, excessively worn, or that fails to operate smoothly.
8. Mount differential case along with ring gear and side bearings in housing, adjust side bearings to zero preload and check ring gear runout with dial indicator bearing against machined edge of gear.
9. If ring gear runout exceeds .003 inch and gear cannot be repositioned to reduce runout, replace ring gear and/or case assembly.