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W
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Risk of crushing.
Raised equipment may drop if the hydraulic system
fails or if the control is operated. Falling equipment
may cause serious injury or death.
A
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w
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m
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N
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!
When two persons are working, the operator should
follow the sign of the maintenance worker.
The degree of wear condition of track link pins and
bushings varies with the working condition or the
characteristics of soil. Check the track tension often
and keep it to the specified value.
When working in wet sand or clay, it sticks to and
packs between moving undercarriage components.
This can prevent mating parts from properly
engaging each other, which cause interference and
high loads. Due to abrasive particles in the material
it significantly accelerates wear rates of the
sprockets, pins / bushings, idlers and track links as
the track load and tension increase. Generally,
packing effects cannot be controlled except by
constant cleaning or removal of the material.
Therefore thoroughly clean the undercarriage at
least daily or more often according to soil conditions
in job-site.
1 Swing the superstructure to the side and raise
the track by using boom and arm. For this
movement, operate the lever slowly.
2 Turn the track slowly in forward and reverse
direction several time. Stop the track while
moving in the reverse direction.
M
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5
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h
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s
1
6
5
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