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MAINTENANCE
METHOD FOR CHECKING GAS SPRING
The gas spring is charged with high-pressure nitrogen gas, so improper handling may cause an explo-
sion resulting in serious personal injury or death. When handling, always observe the following.
•
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.
Gas springs are installed inside the left console (1 place), at
the cab front window (1 place each on right and left), and under
the floor (1 place).
In the following cases, ask your Komatsu distributor for inspec-
tion, repair, and replacement.
•
It is heavy to pull up the lock lever, or to open the cab front
window and the floor.
•
The lock lever dose not stay at LOCK position.
•
Oil or gas is leaking from the gas spring.
METHOD FOR BLEEDING AIR FROM HYDRAULIC CIRCUIT
METHOD FOR BLEEDING AIR FROM PUMP
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.
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WARNING
WENAM00150
MAINTENANCE PROCEDURE
4-37
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