Bearing - Inspection

Inspect bearings for the following defects.
Possible causes are shown:
1. Cratering - fatigue failure.
2. Spot polishing - incorrect seating.
3. Imbedded dirt engine oil.
4. Scratching - dirty engine oil.
5. Base exposed - poor lubrication.
6. Both edges worn - journal damaged.
7. One edge worn - journal tapered or bearing not seated.
Fig 1: Identifying Bearing Defects
Courtesy of FORD MOTOR CO.