Komatsu H75051, Operation & Maintenance Manual

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METHOD FOR CHECKING COOLANT LEVEL, ADDING COOLANT
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WARNING
• Do not open the radiator cap unless it is necessary. When checking the coolant level, check it with
the reservoir tank when the engine is cold.
• Immediately after the engine is stopped, the coolant is hot. Also, the pressure is accumulated in the
radiator. You may get burn injury if you remove the cap in this state. Wait for the temperature to go
down, and then turn the cap slowly to release the pressure.
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CAUTION
When refilling with coolant, support your body securely by using the steps and handrails provided.
1.
Open the engine side cover (1) on the left side of the ma-
chine.
2.
Check the reservoir tank (2).
Check that the coolant level is between FULL and LOW
marks of the reservoir tank (2).
3.
If the coolant is insufficient, add the coolant to FULL level
through the filler port of the reservoir tank (2).
4.
Tighten the cap securely after the refilling.
If reservoir tank (2) is empty, leakage of coolant is suspect-
ed. After checking, repair any abnormality immediately.
If no abnormality is found, check the level of the coolant in
the radiator. If it is low, add coolant of the same density in
radiator according to the coolant density table in “METH-
OD FOR USING FUEL, COOLANT AND LUBRICANTS
ACCORDING TO AMBIENT TEMPERATURE”, and then
add coolant to the reservoir tank.
If coolant is added more than usual, check for the leakage.
Check that there is no abnormality such as oil mixed into
the coolant.
METHOD FOR CHECKING OIL LEVEL IN ENGINE OIL PAN, ADDING OIL
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WARNING
Immediately after the engine is stopped, its parts and oil are still very hot and may cause burn injury.
Wait for the temperature to go down, and then start the work.
MACHINE OPERATIONS AND CONTROLS OPERATION
3-154