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OPERATION
OPERATION
TIPS FOR LONGER UNDERCARRIAGE LIFE
Undercarriage life greatly varies depending on operation method, inspection and maintenance. For most efficient
operation, keep the following points in mind.
OPERATION METHOD
Select the track shoe that best suits the type of soil to be encountered in service.
Please consult your Komatsu distributor when selecting track shoes.
Do not allow shoe slipping to occur during operation.
If shoe slipping occurs, reduce load on the blade until slipping stops.
Avoid sudden starts, acceleration or stops, unnecessary high speeds and sharp turns.
Always operate machine in a straight line whenever possible. When making turns, be careful not to allow the
machine to stay to one side, so operation in both turning directions can be done properly. Make turns with the
largest possible radius.
Prior to operation, clear boulders and obstacles to prevent machine from riding over them while operating.
On a slope, operate the machine parallel to the inclination of the
slope. Do not operate across the slope. Also when stopping the
machine on a slope, the machine should face the top of the
slope.
When ground inclines to the left or right during digging
operations, do not continue to dig with the incline. Move the
machine back to level ground and start to dig again.
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 during dozing or
ripping operations.
INSPECTION AND ADJUSTMENT
Adjust the track shoe tension to an adequate level.
The track shoe tension can be measured in terms of clearance
"a" between the front idler and carrier rollers as shown in the
figure at right. While this clearance is normally 20 mm to 30 mm
(0.8 to 1.2 in), 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 (PAGE 4-26)". Referring to
that section, carry out an inspection and adjustment of track
shoe tension.)
Check idler rollers for oil leakage as well as for loose bolts and
nuts. If any trouble is detected, repair immediately.
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