When bearings are inspected , the appearance of the bearings should first be recorded and the amount and condition of the residual lubricant should be checked .
After the lubricant has been sampled for examination , the bearings should be cleaned . in general , light oil or kerosene may be used as a cleaning solution .
Dismounted bearings should first be given a preliminary cleaning followed by a finishing rinse .Each bath should be provided with a metal net to support the bearings in the oil without touching the sides or bottom of tank . If the bearings are rotated with foreign matter in them during preliminary cleaning , the raceways maybe damaged . The lubricant and other deposits should be removed in the oil bath during the initial rough cleaning with a brush or other means .
After the bearing is relatively clean , it is given the finishing rinse . The finishing rinse should be done carefully with the bearing being rotated while immersed in the rinsing oil . It is necessary to always keep the rinsing oil clean .