Komatsu WA500-6H, Руководство по эксплуатации и техническому обслуживанию

Страница: 258 / 412

4.1 Guides to maintenance
Maintenance
4-4
WA500-6H – VEAM430100
Bleeding air from hydraulic circuit:
After repairing or replacing the parts of hydraulic circuit, or
removing the piping of hydraulic circuit, it is necessary to bleed
the air from inside of the circuit.
See "Bleeding air from hydraulic tank (4-47)".
Precautions when installing hydraulic hoses:
z 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.
z 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:
If you forget carrying out the checks after inspection and mainte-
nance, unexpected problems may occur, and this may lead to
serious injury or property damage. Always do as follows.
z Checks after operation (with engine stopped)
 Have any inspection and maintenance points been for-
gotten?
 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?
z
Check when the engine is running
 See "Two workers for maintenance when engine is run-
ning (2-33)" in the section on safety for checking when
the engine is running. Pay attention to safety.

Check if the inspected and maintenance area is operat-
ing normally.

Increase the engine speed to check for fuel and oil leak-
age.