Komatsu Utility 69001, Operation & Maintenance Manual

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OPERATION
OPERATION
3-97
q
Do not force the machine to carry out work that exceeds its
working capability. Such work includes cases where the
idler or sprocket come off the ground when the machine
meets obstacles that resist the power of the machine dur-
ing dozing or ripping operations.
INSPECTION AND ADJUSTMENT 3
q
Adjust the track shoe tension to an adequate level.
The track shoe tension can be measured in terms of clear-
ance “a“ between the front idler and carrier rollers as
shown in the figure at right. While this clearance is nor-
mally 20 mm to 30 mm, increase the tension slightly on a
rocky terrain and decrease on the clayish ground.
An excessively loose track shoe can create an abnormal
vibration to the machine during the work or cause the
sprocket teeth to wear prematurely.
(For an inspection and maintenance method, see “CHECK
TRACK SHOE TENSION, ADJUST (4-27)“. Referring to
that section, carry out an inspection and adjustment of
track shoe tension.)
q
Check idler rollers for oil leakage as well as for loose bolts
and nuts. If any trouble is detected, repair immediately.
q
Check a clearance (B) between front idler guide plate (1)
and track frame (2). As clearance (B) becomes larger, it
can cause the front idler to sway sideways and cause the
track shoe to jump off rollers. (For an inspection and main-
tenance method, see “ADJUST IDLER CLEARANCE (4-
40)“.
INSPECTION AND REPAIR 3
Frequent inspection and prompt repair will reduce repair costs.
The following items for inspection will serve as a guide to maintenance service of each undercarriage part. Per-
form periodical inspection and contact the Komatsu distributor in your area when machine has approached repair-
able limits and reversing limits.