Loading And Unloading With Trailer - Komatsu PC450-8 Operation & Maintenance Manual

OPERATION
TRANSPORTATION

LOADING AND UNLOADING WITH TRAILER

3
WARNING
Always obey the following when loading or unloading the
machine from a trailer.
Select firm, level ground when loading or unloading the
machine.
Maintain a safe distance from the edge of the road.
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 idling, and operate the machine slowly
when loading or unloading.
In cold areas, carry out the warming-up operation thor-
oughly and make sure that the engine speed is stable
before carrying out the loading or unloading operation.
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 trailer
and correct the direction.
It is dangerous to use the work equipment for loading and
unloading operations. Always use ramps.
When on the ramps, do not operate any lever except the
travel lever.
The center of gravity of the machine will change suddenly
at the joint between the ramps and the trailer, and there is
danger of the machine losing its balance.
Travel slowly over this point.
If it is necessary to swing the work equipment on the
trailer platform, the footing is unstable, so be extremely
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
machine 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 at a maximum slope of 15°.
When using piled soil, compact the piled soil fully to pre-
vent 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 water,
snow, grease, oil, or ice on the ramp surface.
When loading or unloading, always use ramps or a platform. Proceed as follows.
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