Komatsu PC450-8 Operation & Maintenance Manual page 142

DETAILED CONTROLS AND GAUGES
Travel Levers
q
Do not rest your foot on the pedal during operations. If the pedal is depressed by mistake, the
machine may suddenly move and cause a serious accident. Be extremely careful when operating the
pedal for travel or steering operations. When you are not using the pedal, do not rest your foot on it.
q
If the track frame is facing the rear, the direction of travel operations will be reversed when the travel
lever is operated. (The machine will travel forward when operated in reverse, and in reverse when
operated forward; the left and right directions will also be reversed.)
q
When operating the travel levers, check if the track frame is facing the front or the rear. (If the
sprocket is at the rear, the track frame is facing the front.)
This lever (2) is used to change the direction of travel between
forward and reverse. ( ) shows the pedal operation.
(a) FORWARD: The lever is pushed forward
(The pedal is angled forward)
(b) REVERSE: The lever is pulled back
(The pedal is angled back)
N (Neutral): The machine stops
REMARK
If the lever is shifted to the FORWARD or REVERSE position
from the Neutral position, the alarm sounds to warn that the
machine is starting to move.
Work Equipment Control Lever
Left work equipment control lever (3) is used to operate the
arm and upper structure.
Arm operation
(a) Arm OUT
(b) Arm IN
Swing operation
(c) Swing to right
(d) Swing to left
N (Neutral) : The upper structure and arm are held in position
and do not move.
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WARNING
OPERATION