NOTICE
If the nitrogen gas charge pressure in the accumulator is low and operations are continued, it becomes
impossible to release the remaining pressure inside the hydraulic circuit if a failure occurs on the ma-
chine.
Replace the accumulator every 2 years or every 4000 hours, whichever comes sooner. Ask your Komatsu dis-
tributor for replacement.
The accumulator is installed to the position shown in the figure.
METHOD FOR CHECKING AND ADJUSTING AIR COMPRESSOR
Ask your Komatsu distributor for inspection and adjustment of the air compressor.
METHOD FOR CHECKING FOR LOOSENESS OF ENGINE HIGH-PRESSURE PIP-
ING CLAMP, HARDENING OF RUBBER
NOTICE
If the engine operation is continued while any bolt is loosened or any rubber is hardened or removed,
the contact portions of the high-pressure piping may be worn and may be broken by vibration. Always
check that the proper high-pressure piping clamps are correctly installed.
Check clamps (1) to (23) for high-pressure pipe visually and with your fingers that there are no loose mounting
bolts or hardening of the rubber.
MAINTENANCE PROCEDURE
MAINTENANCE
4-76
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...
Страница 400: ......
Страница 401: ...SPECIFICATIONS 5 1...
Страница 406: ......
Страница 435: ...REPLACEMENT PARTS 7 1...
Страница 444: ......
Страница 452: ...PC1250 11 PC1250SP 11 HYDRAULIC EXCAVATOR Form No EENAM03651 2018 KOMATSU All Rights Reserved Printed in Belgium 06 2018...