Komatsu WA100M-7, Operation And Maintenance Manual

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5.8 Maintenance procedure
Maintenance Corrective maintenance
WA80M-7, WA100M-7 – VENAM03001
5-35
Filling coolant
1. Drain and clean the expansion tank.
2. Mix coolant as specified.
3. Slowly fill the cooling system with coolant up to the spillover.
NOTICE
Do not fill the cooling system faster than 8 l/min.
4. To bleed the cooling system, remove the radiator cap and let
the engine run at low idle for five minutes, then for another
five minutes at high idle. If the coolant level in the radiator
drops, add coolant.
5. Switch off the engine, wait for about three minutes and add
coolant up to the spillover of the radiator. Close the radiator.
6. Drain coolant from the coolant expansion tank, clean the
inside of the coolant expansion tank and fill it with amine-free
coolant until the midpoint between FULL and LOW.
Air cleaner – checking, cleaning
WARNING
When using compressed air, there is a danger of flying dirt caus-
ing injuries. Always wear protective equipment such as protective
goggles and a dust mask.
NOTICE

Dirt can get into the engine if inspection, cleaning or mainte-
nance work is carried out with the engine running; this can
cause damage to the engine. Make sure to stop the engine
before you carry out such interventions.
 If the air cleaner is not sufficiently clean, the air cleaner cau-
tion lamp (1) on the main screen will indicate a malfunction.
The engine power will decrease.
Design of the air cleaner
The air cleaner is made up of the air cleaner housing, the dust
eject valve, the filter insert, and the safety filter.