Loading And Unloading With Trailer - Komatsu PC290LC-11 Operation & Maintenance Manual

OPERATION

LOADING AND UNLOADING WITH TRAILER

PRECAUTIONS FOR LOADING AND UNLOADING WITH TRAILER
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Always observe the following when loading or unloading
the machine from a trailer.
• Select the firm, level ground when loading or unload-
ing the machine.
Maintain a safe distance from the road shoulder
• Always turn the auto-deceleration switch OFF (cancel).
If the auto-deceleration switch is left ON, the machine
may suddenly start moving.
• Always set the travel speed switch to low speed (Lo),
run the engine at low idle, and operate the machine
slowly when loading or unloading the machine.
• Perform the warm-up operation thoroughly and make
sure that the engine speed is stable before performing
the loading or unloading the machine.
• Never correct your steering on the ramps. There is
danger that the machine may tip over.
If necessary, drive off the ramps or back on to the trail-
er and correct the direction.
• On the ramps, operate only the travel lever. Do not op-
erate any other lever.
• It is dangerous to use the work equipment for loading
and unloading operations. Always use ramps.
• The center of gravity of the machine shifts suddenly at
the joint between the ramps and the trailer, and it is
dangerous that the machine loses its balance.
Accordingly, pass this point slowly.
• If it is necessary to swing the upper structure on the
trailer platform, the footing is unstable, so be extreme-
ly careful that the machine does not tip over.
If the work equipment is installed to the machine, pull
the work equipment in, and operate slowly to prevent
the machine from losing its balance.
• Position a flagman to give guidance to prevent the ma-
chine from coming off the ramps and to ensure safety
in the operation.
Always observe the following regarding the ramps and
trailer platform.
• Use ramps with ample width, length, thickness, and
strength and install them with a maximum slope of
15 °.
When using piled soil, compact the piled soil fully to
prevent the slope face from collapsing.
• Clean the machine tracks and ramps before starting in
order to prevent the machine from slipping on the
ramps.
There is danger of the machine slipping if there is wa-
ter, snow, grease, oil, or ice on the ramp surface.
WARNING
TRANSPORTATION
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