Komatsu PC30MR-5, Operation & Maintenance Manual

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REPLACE DEFINED LIFE PARTS
Material quality of these parts can change as time passes and they are likely to wear out or deteriorate.
Replace them every 2 years or every 4000 hours, whichever comes sooner.
DEFINED LIFE PARTS LIST
No. Periodical replacement parts
1 Fuel system Fuel hose
Spill hose
Ask your Komatsu distributor for
replacement.
2 Engine lubrication system Engine oil filter hose
3 Work equipment hydraulic
system Main pump delivery hose
Pump delivery hose
Pump branch hose
Main pump LS hose
External work equipment hose
•
Boom foot connection hose
•
Boom cylinder hose
•
Arm connection hose
• Line hose for additional attachment
4 Others PPC accumulator
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 perform this work.
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 to replace it.
MAINTENANCE MAINTENANCE PROCEDURE
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