Etching Bearing surfaces appear gray or grayish black in color with related etching away of material usually at roller spacing. Replace bearings - check seals and check for proper lubrication.
Figure 7
Misalignment Outer race misalignment because of foreign object. Clean related parts and replace bearing. Make sure races are properly seated.
Figure 8
Indentations Surface depressions on race and rollers caused by hard particles of foreign materials. Clean all parts and housings, check seals and replace bearings if rough or noisy.
Figure 9
SP000016 Page 16
General Maintenance Procedures