Komatsu HM400-5, Operation & Maintenance Manual

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16. Drain the coolant in reservoir tank (4).
17. Clean the inside of reservoir tank (4).
18. Add coolant up to the middle between FULL and LOW.
METHOD FOR CHECKING WINDOW WASHER FLUID LEVEL, ADDING FLUID
Perform this check if there is air in the window washer fluid.
When getting on or off the machine with carrying window wash-
er fluid, place it once in part (A) to ensure your safety.
Check the fluid level in window washer tank (1).
If the level is low, add window washer fluid for automobile.
Be careful not to let dirt or dust get in when adding fluid.
When operating at below freezing point, use fluid with anti-
freeze.
METHOD FOR CHECKING AND MAINTENANCE AIR CONDITIONER
METHOD FOR CHECKING REFRIGERANT LEVEL FOR AIR CONDITIONER (GAS)
k k
WARNING
If the refrigerant used in the air conditioner gets into your eyes or on your hands, it may cause loss of
sight or frostbite.
Never touch the refrigerant.
Do not loosen any part of the refrigerant circuit.
Do not bring any open flame close to any point where the refrigerant gas is leaking.
If the cooling effect is poor, there is probably lack of refrigerant (gas).
1.
When checking the refrigerant (gas) level, set the machine under the following condition.
1) Start the engine and run it at approximately 1500 rpm.
2) Press the fan switch and set the air flow of the air conditioner to the maximum.
3) Turn air conditioner switch ON.
4) Press the temperature control switch and set the temperature to the lowest level.
5) Press FRESH/RECIRC air selector switch and set it to FRESH mode.
MAINTENANCE PROCEDURE MAINTENANCE
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