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TESTING AND ADJUSTING
Undercarriage
Complaint
Possible cause
Remedy
Remarks
Front idlers, track rollers
(1) Improper installation or
Check position of
So that track will move
and carrier rollers wear
misalignment
each and set it
straight, front idler and
abnormally.
correctly.
other rollers must be
lined up straight. This
is particularly impor
tant for front idler.
(2) Track frame misaligned
Adjust.
Track frame must be
relative to chassis
trued up with respect to
sprocket, and two
frames, right and
left,must be perfectly
parallel.
(3) Distorted track frame
Repair.
Refer to (4).
(4) Worn link pins and bushings
Repair or replace.
Track will move in
wavy fashion to rub
rollers and sprocket if
pins and bushings are
worn down.
(5) Front idler and track rollers
Repair or replace.
Track will oscillate
have too much axial play
sidewise to promote
wear of flange parts of
rollers if idler and
rollers have too much
sidewise play.
(6) Track links worn
Repair or replace.
This malcondition
(Secure specified link
allows roller flanges to
height.)
rub link bosses.
(7) Loose track
Adjust.
A loose track promotes
flange wear.
Rollers tend to overheat,
(1) Inadequate lubrication
Disassemble and lubri-
Loss of lubricant is
or will not roll.
cate.
often accompanied by
presence of muddy
water in rolling
clearance. Such
muddy water means
that floating seal has
failed.
(2) Rolling clearance between
Repair or replace.
bushing and shaft too small,
or roller has little or no axial
play
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