Komatsu WA500-6H, Operation & Maintenance Manual

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6.2 Joystick steering system Attachments, Options
6-40
WA500-6H – VEAM430100
6.2.3 Precautions for steering with joystick
WARNING
z If the machine and transmission cannot be operated nor-
mally with the joystick, or if the warning lamp lights up, stop
the machine with the brake first. Then, turn off the joystick
ON/OFF switch and move to a safe place by using the steer-
ing wheel and directional lever.
z Before starting the operation of the machine again, find out
and repair the troubled part and confirm that the function is
normal. For the troubleshooting and repair, please contact
your KOMATSU distributor.
z
Never operate the machine before it is repaired completely.
z
If the machine is steered with the steering wheel, its turning
angle is fixed when turning of the latter is stopped.If the
machine is steered with the joystick and the latter is held
turned, however, the machine is steered to the articulate
end.
Since the feel of steering of the joystick is different from the
steering wheel, take care sufficiently until you are get accus-
tomed to the joystick.
z If the forward/reverse lever is not at the neutral position,
when the joystick ON/OFF switch is turned off, the neutral
interlock circuit prevents it from turning to the forward/
reverse lever side. Since the transmission is kept at the
neutral position, the vehicle cannot move either forward or in
reverse. In this case, turn the forward/reverse lever to the N
(Neutral) position.
z If the electric circuit of the joystick steering system or trans-
mission control system has trouble, the central caution lamp
(Red) on the left side of the machine monitor flashes to notify
the trouble to the operator.
Since both steering system and transmission are set in the
respective neutral positions, turn off the joystick ON/OFF
switch, then drive the machine with the steering wheel and
the directional lever.