Komatsu HM400-5, Operation & Maintenance Manual

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1.
Open the engine hood.
2.
Check that the coolant level in reservoir tank (1) is be-
tween FULL and LOW marks.
If the level is below LOW, remove cap (2) and add the
coolant up to FULL mark.
If no coolant is left in reservoir tank, add coolant through
water filler port (3) on the top of the sub-tank and also to
the reservoir tank.
If more coolant is added than normal, then check for water
leakage.
3.
Check that there is no oil in the engine coolant or any oth-
er problem.
4.
After refilling with coolant, tighten cap (2) securely.
5.
Close the engine hood.
METHOD FOR CHECKING OIL LEVEL IN ENGINE OIL PAN, ADDING OIL
k k
WARNING
Immediately after the engine is stopped, its parts and oil are still very hot, and may cause burn injury.
Accordingly, wait until they have cooled down before starting the work.
REMARK
• When checking the oil level after the engine has been operated, wait for at least 15 minutes after stopping
the engine before checking.
If the machine is inclining, make it level before checking.
• When the ambient temperature is low, water or emulsified matter may stick to the dipstick, fuel filler cap,
etc. or the drained oil may be milky white because of water vapor in the blowby gas. However, if the coolant
level is normal, it is not a problem.
MACHINE OPERATIONS AND CONTROLS OPERATION
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