Selection Of Operation With Joystick Steering Lever And Steering Wheel; Method For Getting On Or Off To Operator's Cab - Komatsu H70051 Series Operation & Maintenance Manual

ATTACHMENTS AND OPTIONS
SELECTION OF OPERATION WITH JOYSTICK STEERING LEVER AND
STEERING WHEEL
Switching operation of transmission forward and reverse travel control (switching from directional lever
to joystick directional selector switch while joystick ON/OFF switch is ON, or switching from joystick di-
rectional selector switch to directional lever while joystick ON/OFF switch is OFF) can only be available
when the directional lever and the joystick directional selector switch are in NEUTRAL position (N). If
those lever and switch are not in NEUTRAL position (N), the centralized warning lamp lights up, and the
alarm buzzer sounds.
Temporarily return the directional lever and the joystick directional selector switch to NEUTRAL posi-
tion (N).
Select suitable operation from joystick steering lever operation and steering wheel operation in accordance with
the work.
• Steering by joystick steering lever operation
This operation is suitable for the continuous loading work in a broad work place under slow cycle time.
Since the operation with less stroke and less operating effort is available, fatigue in continuous operation
decreases.
• Steering by steering wheel operation
This operation is suitable for travel between job sites and load-and-carry operation, since high-speed
straight travel performance and lifting operation performance are high in it.
• The maximum speed on a level ground is limited approximately to 18 km/h automatically.

METHOD FOR GETTING ON OR OFF TO OPERATOR'S CAB

Set the joystick ON/OFF switch to OFF position, keep the joystick console upward when getting on or
off the operator's seat.
When the console lock release lever is pulled up and the joystick console is moved upward, the power
supply for the joystick steering system is turned OFF, then joystick becomes inoperable.
You can spring up the joystick console so that the getting on or off the operator's seat becomes easy.
If you move the joystick steering lever carelessly while engine is running, the machine may articulate unexpect-
edly and it may be dangerous. To avoid this, be sure to set the joystick ON/OFF switch to OFF position when
the machine is not operated.
1.
Set joystick ON/OFF switch to OFF position (b)
The power supply becomes OFF and the joystick steering
system does not operate.
2.
When you operate the machine, be sure to lower the joy-
stick console first and then set joystick ON/OFF switch to
ON position (a).
The power supply becomes ON and the joystick steering
system operates.
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CAUTION
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WARNING
HANDLE JOYSTICK STEERING SYSTEM
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