DEFINED LIFE PARTS LIST
No.
Periodical replacement parts
Replacement interval
1
Fuel system
Fuel hose
Spill hose
Drain hose
Every 2 years or 4000 hours,
whichever comes sooner
2
Engine lubrication system
Engine oil filter hose
3
Work equipment hydraulic
system
Main pump delivery hose
Pump branch hose
Hydraulic drive fan hose (Intake fan)
Swing line hose
External work equipment hose
•
Boom foot connection hose
•
Boom cylinder hose
•
Arm cylinder hose
•
Arm connection hose
4
Others
PPC accumulator
METHOD FOR CHECKING WATER PUMP
Check for leakage of water and oil around the water pump. If
any problem is found, ask your Komatsu distributor to perform
disassembly, repair, or replacement.
METHOD FOR CHECKING STARTING MOTOR
The brush may be worn and the grease in the bearings may have dried out.
Ask your Komatsu distributor for the inspection and repair.
METHOD FOR REPLACING ACCUMULATOR (FOR CONTROL CIRCUIT)
k
k
WARNING
The accumulator is charged with high-pressure nitrogen gas, and improper operation may cause an ex-
plosion which will lead to serious injury or death. When handling, always observe the following.
• The pressure in the hydraulic circuit cannot be completely removed. When removing the hydraulic
equipment, do not stand in the direction that the oil spurts out when performing the operation. In
addition, loosen the bolts slowly when performing the work.
• Do not disassemble.
• Do not bring open flame close to it or do not dispose of it in fire.
• Do not perform drilling, welding or flame-cutting.
• Do not hit or roll it, or subject it to any impact.
• When disposing of it, the gas must be released. Ask your Komatsu distributor to have this work per-
formed.
MAINTENANCE
MAINTENANCE PROCEDURE
4-75
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...