Method For Bleeding Air From Hydraulic Circuit - Komatsu PW98MR-10 Operation & Maintenance Manual

MAINTENANCE
Gas springs are installed inside the left console (1 place), at
the cab ceiling window (2 places on right and left), and inside
the engine hood (1 place).
In the following cases, ask your Komatsu distributor for inspec-
tion, repair, and replacement.
• The lock lever cannot be pulled up lightly or the cab ceiling
window and engine hood cannot be opened lightly.
• The lock lever dose not stay at LOCK position.
• The cab ceiling window does not stay open.
• Oil or gas is found to be leaking from the gas spring.

METHOD FOR BLEEDING AIR FROM HYDRAULIC CIRCUIT

If necessary, see the paragraphs for starting the engine, and moving/steering/stopping the machine in OPERA-
TION section.
Bleeding air from pump
Perform it when any hydraulic component or oil is replaced.
NOTICE
If the pump is operated without filling the pump case with hydraulic oil, abnormal heat will be generated
and this may cause a premature damage to the pump. Bleed air securely.
1.
Run the engine at low idle.
2.
Open the engine hood.
3.
Loosen air bleeder (1) installed to the pump and check that
oil oozes out from the air bleeder.
4.
After bleeding air, tighten air bleeder (1).
WENAM00061
MAINTENANCE PROCEDURE
RKA52660
4-31