Komatsu WA250PT-5H, Руководство по эксплуатации и техническому обслуживанию

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MAINTENANCE
Guides to maintenance
4-3
Locking inspection covers 0.
Lock inspection cover in position securely with the lock bar. If inspection or maintenance is carried out with the
inspection cover not locked in position, there is a hazard that it may be suddenly blown shut by the wind and cause
injury to the worker.
Bleeding air from hydraulic circuit 0.
If the hydraulic oil equipments have been repaired or replaced and if the hydraulic hoses, pipes, etc. have been
disconnected, it is necessary to bleed air in the circuit. See “Change oil in hydraulic tank, replace hydraulic filter
element on page 4-54“.
Precautions when installing hydraulic hoses 0.
When removing parts at locations where there are O-rings or gasket seals, clean the mounting surface, and
replace with new parts.
When doing this, be careful not to forget to assemble the O-rings and gaskets.
When installing the hoses, do not twist them or bend them into loops with a small radius.
This will cause damage to the hose and markedly reduce its service life.
Checks after inspection and maintenance 0.
If you forget carrying out the checks after inspection and maintenance, unexpected problems may occur, and this
may lead to serious injury or property damage. Always do as follows.
Checks after operation (with engine stopped)
Have any inspection and maintenance points been forgotten?
Have all inspection and maintenance items been carried out correctly?
Have any tools or parts been dropped inside the machine? It is particularly dangerous if parts are dropped
inside the machine and get caught in the lever linkage mechanism.
Is there any leakage of water or oil? Have all the bolts been tightened?
Check when the engine is running
See “Two workers for maintenance when engine is running on page 2-30“ in the section on safety for check-
ing when the engine is running. Pay attention to safety.
Check if the inspected and maintenance area is operating normally.
Increase the engine speed to check for the fuel and oil leakage.