Komatsu PC45MR-30403, Operation And Maintenance Manual

Page: 281 / 475

LOADING AND UNLOADING WITH TRAILER
PRECAUTIONS FOR LOADING AND UNLOADING WITH TRAILER
Precautions for loading and unloading operations
k k
WARNING
Always observe the following when loading or unloading
the machine onto/from a trailer.
• Select the firm, level ground when loading or unload-
ing the machine.
• Maintain a safe distance from the road shoulder.
• Check that the travel speed display shows Lo, and per-
form the loading or unloading of machine at low
speed.
• Always set the travel speed to low speed (Lo), run the
engine at low idle, and perform the loading or unload-
ing of machine.
• Perform the warm-up operation thoroughly and make
sure that the engine speed is stable before performing
the loading or unloading of machine.
• Never correct your steering on the ramps. There is a
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.
• For the machine equipped with cab, door must be
locked either at the open position or closed position.
Avoid opening or closing the door on the ramps or
trailer platform because the operating effort may sud-
denly change.
TRANSPORTATION OPERATION
3-220