Komatsu PC450-8 Operation & Maintenance Manual page 238

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 center line 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 caus-
ing 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 equip-
ment 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.
q
When the swing lock switch is turned to the ON posi-
tion, the swing lock monitor (9) lights up.
(a): ON position
(b): OFF position
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OPERATION