Swing operations can be performed temporarily with the 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 to upper position)
(b) Normal
When normal (switch is set to lower position)
• When the upper structure does not swing but the display
does not show “L03”, move this switch to the Cancel posi-
tion (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 the work equipment needs to
be moved temporarily in an abnormal and emergency condition. Repair the problem as soon as possi-
ble.
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 the cancel position (a).
(a) Cancel
When abnormal (switch is set to upper position)
(b) Normal
When normal (switch is set to lower position)
• When the lock lever automatic lock cancel switch is set to
cancel position (a), the lock lever automatic lock cancel pi-
lot lamp lights up. At the same time, the mode is displayed
in the center of the monitor display, and after 2 seconds,
the screen returns to the standard screen.
• After moving the machine or work equipment temporarily
by canceling this switch, stop the engine, return the switch
to the normal position (b), and then ask your Komatsu dis-
tributor for repair.
REVOLVING LAMP SWITCH
(if equipped)
OPERATION
EXPLANATION OF COMPONENTS
3-93
Содержание PC1250-11
Страница 2: ......
Страница 11: ...Do not repeatedly handle and lift loads FOREWORD VIBRATION LEVELS 1 9...
Страница 24: ......
Страница 66: ......
Страница 67: ...OPERATION Please read and make sure that you understand the SAFETY section before reading this section 3 1...
Страница 73: ...REMARK The above figure does not show all of the caution lamp symbols OPERATION GENERAL VIEW 3 7...
Страница 317: ...MAINTENANCE Please read and make sure that you understand the SAFETY section before reading this section 4 1...
Страница 377: ...Boom d Left side e Right side f Head side g Foot side MAINTENANCE MAINTENANCE PROCEDURE 4 61...
Страница 378: ...Arm h Left side i Right side MAINTENANCE PROCEDURE MAINTENANCE 4 62...
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Страница 401: ...SPECIFICATIONS 5 1...
Страница 406: ......
Страница 435: ...REPLACEMENT PARTS 7 1...
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Страница 452: ...PC1250 11 PC1250SP 11 HYDRAULIC EXCAVATOR Form No EENAM03651 2018 KOMATSU All Rights Reserved Printed in Belgium 06 2018...