Komatsu PC45MR-30403, Operation And Maintenance Manual

Page: 251 / 475

PRECAUTIONS FOR WORKING ON SLOPE
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WARNING
• When performing the swing operation or operating the
work equipment on slopes, machine may lose its bal-
ance and tip over. Avoid such operations as much as
possible.
It is particularly dangerous to swing downhill when the
bucket is loaded.
If it is unavoidable to perform such operations, pre-
pare an embankment to make a platform (A) on the
slope so that the machine is horizontal.
• Do not operate or drive the machine on a slope cov-
ered with the steel plates.
Even with slight slopes, there is a hazard that the ma-
chine may slip.
• Do not drive the machine up or down on steep slopes.
There is a danger that the machine may turn over.
• When driving the machine, raise the bucket approxi-
mately 20 to 30 cm {7.9 to 11.8 in} above the ground.
• Do not drive down in reverse on a slope.
• Never turn on slopes or drive across slopes.
Go down to a flat place once, and take a safer way
such as a detour.
• Stay alert while driving and operating the machine in
order to stop it safely when the machine slips or be-
comes unstable.
• When the machine is traveling uphill, if the shoes slip
or it is impossible to travel uphill using only the force
of the tracks, do not use the pulling force of the arm to
help the machine travel uphill.
There is a danger that the machine may tip over.
• Never perform swing operation on a slope even if the
engine is stopped. If swing operation is performed
with the work equipment control lever, the upper struc-
ture may swing under its own weight.
• Do not open or close the door (Machine with cab spec-
ification) when the machine is on a slope.
The operating effort may suddenly change.
Always check that the door (Machine with cab specifi-
cation) is locked either at the open position or closed
position.
1.
When driving the machine down steep hills, use the travel
lever and fuel control dial to keep the travel speed low.
When driving the machine down steep hills of 15 ° or more,
set the machine to the posture shown in the figure with
sprocket (1) downward, bucket height (a) at 20 to 30 cm
{7.9 to 11.8 in} , and lower the engine speed.
MACHINE OPERATIONS AND CONTROLS OPERATION
3-190