IDLER GEAR AND BEARING ASSEMBLY - MAINTENANCE INSTRUCTIONS
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.
Wear protective eye goggles when using compressed air.
Clean with fuel oil and
dry with compressed air.