NOTE: Determine the cause of the damage and correct it.
Check for damage to the bearing cage at the top or side or in the bore area due to improper use of the special tool or the use of an unsuitable tool.
- Install a new bearing if necessary.
2. Check for discoloration of the tapered roller ends due to insufficient lubrication or overheating, possibly due to excessive preload.
- Install a new bearing and new seals if necessary.
- Check that the bearing is properly lubricated.
3. Check for wear on the ends of the tapered rollers due to improper installation, excessive preload or improper bearing fit.
- Install a new bearing and new seals if necessary.
- Check that the bearing is properly lubricated.
4. Check for grey or grey/black discoloration of the bearing surfaces with deposits between the rollers.
- Install a new bearing and new seals if necessary.
- Check that the bearing is properly lubricated.
5. Check the bearing ring surfaces for grooves caused by static load.
- Install a new bearing if the surface is uneven or the bearing makes noise.
6.
NOTE: Overheating may cause loss of surface hardness.
Check for dark blue discoloration due to overheating (yellow or brown discoloration is normal) due to excessive preload or insufficient lubrication.
- Install a new bearing, new seals and other components if necessary.
7. Inspect surfaces for abrasive wear caused by metal fatigue.
- Install a new bearing and clean all other affected components if necessary.
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