Komatsu PC490-11, Инструкция по установке и эксплуатации

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SWING PARKING BRAKE CANCEL SWITCH
NOTICE
Swing operations can be performed temporarily with swing parking brake cancel switch when there is a
problem in the swing parking brake system. Do not use it except for emergency. Repair the problem as
soon as possible.
Swing operations can be performed temporarily with swing
parking brake cancel switch when there is a problem in the
swing parking brake system (when the upper structure does
not swing but the display does not show “L03”).
(a) Cancel
When abnormal (switch is set up)
(b) Normal
When normal (switch is pushed down)
• When the upper structure does not swing but the display
does not show “L03”, move this switch to Cancel position
(a), and operation can be performed.
• When the switch is moved to Cancel position (a), the
swing lock pilot lamp flashes.
LOCK LEVER AUTOMATIC LOCK CANCEL SWITCH
NOTICE
The lock lever automatic lock cancel switch is used to disable the lock lever automatic lock function
and enable the operations of the work equipment and machine temporarily, when the lock lever auto-
matic lock function is abnormal. Use this switch only when the machine or working machine needs to
be moved temporarily in an abnormal and emergency condition. Repair the problem as soon as possi-
ble.
For details of the lock lever automatic lock function, see “LOCK LEVER (3-99)”.
If the lock lever automatic lock function is abnormal, when the
lock lever is canceled normally under the condition that the
work equipment control lever or travel lever is in neutral posi-
tion, this function is actuated by mistake and the machine or
the work equipment may not move. The machine or the work
equipment can be operated temporarily by setting the lock lev-
er automatic lock cancel switch to cancel position (a).
(a) Cancel
When abnormal (switch is set up)
(b) Normal
When normal (switch is pushed down)
EXPLANATION OF COMPONENTS OPERATION
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