Komatsu PC450-8 Operation & Maintenance Manual page 417

HIGH REACH DEMOLITION EQUIPMENT 27M
TRAVEL LEVERS
q Do not put your foot on the pedal unless the machine is
traveling. If you leave your foot on the pedal and press it
by mistake, the machine will move suddenly, and this
may lead to a serious accident.
q With the track frame facing to the rear, the machine will
move in the reverse direction by forward traveling and in
the forward direction by reverse traveling.
When the travel lever is used, check to see if the track
frame is facing forward or backward. (If the sprocket is
located to the rear, the track frame is facing forward.)
q Be extremely careful when using the pedal for operations
and travel, especially with High Reach Equipment fitted.
q Pay particular care to height limitations and machine sta-
bility.
q With High Reach Equipment fitted, only travel in the pos-
ture shown.
q Only use Lo speed mode for travel with High Reach
Equipment fitted.
This lever (2) is used to switch the direction of travel of the
machine. ( ) shows the operation of the pedal.
(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
( ): This indicates operation of the pedal.
REMARK
q Machines equipped with travel alarm (If equipped)
If the lever is shifted to the advance or reverse position from the neutral position, the alarm sounds to warn that
the machine is starting to advance.
q The travel lever can use the auto-deceleration mechanism to change the engine speed as follows.
q When the travel lever and work equipment control levers are at the neutral position, even if the fuel control dial
is above mid-range speed, the engine speed will go down to a mid-range speed. If one of these levers is oper-
ated, the engine speed will rise to the speed set by the fuel control dial.
q If all the control levers are at the neutral position, the engine speed goes down approx. 100 rpm, then after
approx. 4 seconds, the engine speed goes down to the deceleration speed (approx. 1400 rpm).
WARNING
CONTROL LEVERS AND SWITCHES
Travel Posture
7
7-7