Komatsu PW118MR-11 Operation & Maintenance Manual page 178

EXPLANATION OF COMPONENTS
The pump secondary drive switch is used to make it possible to
operate the work equipment or the machine temporarily if any
problem should occur in the pump control system (when the
machine monitor shows "L03").
(a) Emergency
When abnormal (switch is set back)
(b) Normal
When normal (switch is set forth)
If the machine monitor shows "L03", set this switch to emergen-
cy position (a) to make it possible to perform operations.
EMERGENCY TRAVEL CIRCUIT ENABLE SWITCH
NOTICE
• The travel circuit enable switch allows emergency travel for short-distances when a fault with the
gear selector occurs. The travel direction is set with the emergency travel direction switch. It should
not be used permanently.
• If this switch is moved to emergency position by mistake while the machine is operating normally,
"L03" is shown in the machine monitor.
If "L03" is displayed during the work, check that the switch is in normal position.
It should not be used permanently. Immediately repair the fault that caused the failure.
The switch allows to perform travel for short distances when
anomalies occur in the travel sensor.
(a) Emergency travel
When abnormal (switch is set back)
(b) Normal
In normal conditions (switch forward)
PARKING BRAKE RELAY DEACTIVATION SWITCH
The switch allows you to release the parking brake if there is a
fault with the relay.
(a) Disconnecting the parking brake
When abnormal (switch is set back)
(b) Normal
When normal (switch is set forth)
If the switch is in the wrong position, an error message will ap-
pear on the control panel.
3-106
WENAM00130
OPERATION