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OPERATION
To select a gear speed for uphill or downhill travel or grading,
use the following procedure.
•
When fixing the gear speed
Press HOLD switch on the boom control lever.
The gear speed is fixed to the one indicated on the trans-
mission indicator of the machine monitor.
•
When shifting down and up a fixed gear speed
Shift the gear speed with the gear speed switch.
ENGINE SHUTDOWN SECONDARY SWITCH
NOTICE
The engine shutdown secondary switch is used to stop the engine when the starting switch is turned to
OFF position but the engine does not stop.
•
Use the engine shutdown secondary switch only in an emergency.
Contact your Komatsu distributor for repair immediately when there is any abnormality on this
switch.
•
If the engine shutdown secondary switch is set to STOP ENGINE position by mistake while the ma-
chine is operating normally, "Engine Shutdown Secondary SW in Operation" is displayed on the
machine monitor.
If "Engine Shutdown Secondary SW in Operation" is displayed on the machine monitor, check that
the switch cover is closed and the switch is in NORMAL position. If not, return it to NORMAL posi-
tion.
Lower the work equipment to the ground according to Safety, "PRECAUTIONS WHEN STANDING UP FROM
OPERATOR'S SEAT (2-19)", push the work equipment lock switch to lock the work equipment, turn the parking
brake switch ON, and turn the starting switch to OFF position.
If the engine does not stop, operate the engine shutdown secondary switch according to the following proce-
dure.
1.
Raise cover (1) and open it.
There is a switch under the cover.
EXPLANATION OF COMPONENTS
3-109
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