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12. OPERATION
12.16 TIPS FOR LONGER UNDERCARRIAGE
LIFE
Undercarriage life varies greatly depending on operation method, inspection
and maintenance. Track components
have a certain dimension when new.
As wear occurs dimensions will decrease (or increase in case of track pitch
and front idler flange height) until a decision
must be made whether
to
rebuild or recondition components, replace them or run them to destruction.
For each component or condition, five different dimensions are measured.
100% is dimension of component when new. 075%, 050% and 025% indi-
cate percentage of wear remaining before a maintenance action should be
taken. 000% is point at which either maintenance
must take place or com-
ponents run to destruction.
For most efficient operation, keep the following
point in mind.
12.16.1
OPERATION
METHOD
Select the track shoe that best suits the type of soil to be encountered
in service. Please consult your distributor when selecting track shoes.
Do not allow shoe slipping to occur during operation. If shoe slipping
occurs, reduce load to the blade until slipping stops.
Avoid sudden starts, acceleration
or stops, unnecessarily
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 toward the top of the slope.
When ground inclines to left or right during digging operation, do not
continue
to dig with machine inclined.
Move machine back to level
ground and start to dig again.
When idlers or sprockets are lifted due to obstacles during dozing, do
not attempt to force the machine to perform. Because work at this time
exceeds machine working capability.
2-56
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