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 TM 55-1905-217-34
(3) While removing or installing an idler gear bearing, the bearing MUST be rotated to avoid the possibility of
damaging the bearing by brinelling the bearing races. Brinelling refers to the marking of races by applying a heavy load
through the rollers of a non-rotating bearing in such a way that the rollers leave impressions on the contact surfaces of the
races. These impressions may not be easily discerned during normal inspection. For example, a bearing may be
brinelled if a load were applied to the inner race of the bearing assembly in order to force the outer race into the idler gear
bore, thus transmitting the force through the bearing rollers. A brinelled bearing may have a very short life.
c. Disassembly. Refer to figure 3-59 for the location and identification of parts and disassemble the bearing as
follows:
3-81
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