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 TM 55-1905-220-14-5
3-91.3. IDLER GEAR AND BEARING ASSEMBLY - MAINTENANCE
INSTRUCTIONS (Cont)
LOCATION
ITEM
ACTION
REMARKS
DISASSEMBLY
2.
Idler gear
hub and
bearing
assembly
NOTE
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 the
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.
a. Six
Remove.
bolts
(6),
three
bolt
locks (7)
and bear-
ing re-
tainer
(8)
Wear eye protection when using compressed air.
b. Idler
Clean with fuel oil and
gear and
dry with compressed air.
bearing
assembly
(9)
3-1556
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