K 1500 Suburban 4WD V8-6.5L DSL Turbo VIN F (1999)
The corrosion caused by small relative movement of parts with no lubrication.
1. Replace the bearing.
2. Clean the related parts.
3. Check the seals.
4. Check for proper lubrication.
SMEARS
The smearing of the metal is due to slippage. Slippage can be caused by the following factors:
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Poor fits
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Lubrication
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Overheating
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Overloads
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Handling damage
If this condition occurs, perform the following:
1. Replace the bearings.
2. Clean the related parts.
3. Check for proper fit and lubrication.
STAIN DISCOLORATION
The discoloration on the bearings is caused by incorrect lubrication or moisture and ranges in color from light brown to black. Reuse the bearing if
you can remove the stains with light polishing and there is no evidence of overheating. Check the seals and the related parts for damage.
HEAT DISCOLORATION
