Chevrolet 1980 Light Duty Truck Service Manual page 278

3C -10 FRONT SUSPENSION
BEARINGS AND RACES
BENCH DIAG NO STIC PROCEDURE
This section describes common types of bearing distress
and their causes. Illustrations are included to help diagnose
the cause of distress and comments are provided to help
make effective repairs.
Consider The Following Factors W hen
Diagnosing Bearing Distress:
1. Note General Condition of all parts during
teardown and examinations.
2. Classify the failure with the aid of these illustrations
where possible.
3. Determine the cause. Recognizing the cause will
permit correction of the problem and prevent a repeat
failure of the same type.
4. Make all repairs
procedures.
following recommended
Common Causes For Bearing Distress
Include The Following:
1. Improper adjustment or preloading.
2. Mounting or teardown abuse.
3. Improper mounting methods.
4. Inadequate or wrong lubricants.
5. Entrance of dirt or water.
6. Wear from dirt or metal chips.
7. Corrosion or rusting.
8. Overload.
9. Overheating causing tempering.
10. Frettage of bearing seats.
11. Brinelling from impact loads and shipping.
12. Manufacturing defects.
LIQ H T T R U C K S ER V IC E M AN UAL