Component Tests

Bearing Cups
heck the bearing cups for deep scores, galling or spelling. If a 0.381 mm (0.0015-inch) feeler gauge can be inserted between a bearing cup and the bottom of its bore at any point around the bearing cup, the bearing cup must be reseated.

Cone and Roller Assemblies
When operated in the bearing cups, the bearing cone and rollers must turn without roughness. Examine the roller ends for step wear. If inspection reveals either a damaged cup or a damaged cone and roller, both parts must be replaced.

Pinion Flange (End Yoke or Rear Axle Universal Joint Flange)
Be sure that the flange lugs have not been damaged in removing the pinion seal or in removing the pinion seal from the drive pinion. The end of the flange that contacts the bearing cone as well as the nut counterbore and surface of the pinion seal must be smooth and free of nicks.

Gears
Examine the teeth of the ring gear and pinion for scoring, excessive wear, nicks and excessive chipping. Worn, scored and damaged ring gear and pinion cannot be rebuilt to correct a noisy condition.

Brake Sensor Rind-Anti-Lock
Examine the teeth of the anti-lock speed sensor ring. Replace the anti-lock speed sensor ring if any teeth are broken or missing.

Carrier Housing
Make sure that the differential and pinion bearing bores are smooth. Remove any nicks or burrs from the mounting surfaces of the rear axle housing.

Differential Case
1. Make sure that the hubs where the bearings mount are smooth. Carefully examine the bearing shoulders of the differential case, which may have been damaged when the bearings were removed.
2. Check the fit (free rotation) of the differential side gears in their counterbores.