Komatsu PC220LC -8 Operation & Maintenance Manual page 233

TRANSPORTATION TRANSPORTATION
6. If the machine is equipped with work equipment, set the work
equipment at the front, and travel forward to load it; if it has no
work equipment, travel in reverse to load it.
Follow instructions and signals of a conductor particularly
when traveling in reverse.
7. Before moving onto the ramps, make sure that the machine is
positioned in a straight line with the ramps and that the
centerline of the machine matches that of the trailer.
Align the direction of travel with the ramps and travel slowly.
Lower the work equipment as far as possible without causing
interference.
When on the ramps, operate only the travel lever. Do not
operate any other lever.
8. When loading or unloading a machine with the work equipment
installed, at the point where the tracks are on both the ramps
and the ground surface, turn the swing lock switch OFF, then
swing the upper structure slowly 180°.
After doing that, drive slowly in reverse and load the machine
onto the trailer.
9. Turn the swing lock switch ON to apply the swing lock.
When the swing lock switch is turned to the ON position, the
swing lock monitor (9) lights up.
(a): ON position
(b): OFF position
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OPERATION OPERATION