K 2500 Suburban 4WD V8-5.7L VIN R (1999)
The metal smears on the roller ends are due to overheating, lubricant failure, or lubricant overload.
1. Replace the bearing.
2. Check the seals.
3. Check for proper lubrication.
ETCHING
The bearing surfaces appear gray or grayish black in color, with related etching away of material usually at roller spacing.
1. Replace the bearings.
2. Check the seals.
3. Check for proper lubrication.
BENT CAGE
When a cage is damaged due to improper handling or improper tool usage. Replace the bearing.
CAGE WEAR
