Komatsu PW130ES-6K Operation & Maintenance Manual page 169

OUTLINES OF SERVICE
If the oil in the work equipment is not clear, there is probably
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water or air getting into the circuit. In such cases, please con-
tact your Komatsu distributor.
When changing the oil, always replace the related filters at
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the same time.
We recommend you to have an analysis made of the oil peri-
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odically to check the condition of the machine. For those who
wish to use this service, please contact your Komatsu distrib-
utor.
FUEL
The fuel pump is a precision instrument, and if fuel containing
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water or dirt is used, it cannot work properly.
Be extremely careful not to let impurities get in when storing
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or adding fuel.
Always use the fuel specified in the Operation and Mainte-
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nance Manual.
Fuel may congeal depending on the temperature when it is
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used (Particularly in low temperature below-15°C), so it is
necessary to change to a fuel that matches the temperature.
To prevent the moisture in the air from condensing and form-
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ing water inside the fuel tank, always fill the fuel tank after
completing the day's work.
Before starting the engine, or when 10 minutes have passed
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after adding fuel, drain the sediment and water from the fuel
tank.
If the engine runs out of fuel, or if the filters have been
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replaced, it is necessary to bleed the air from the circuit.
COOLANT
River water contains large amounts of calcium and other
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impurities, so if it is used, scale will stick to the engine and
radiator, and this will cause defective heat exchange and
overheating. Do not use water that is not suitable for drinking.
When using anti-freeze, always observe the precautions
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given in the Operation and Maintenance Manual.
Komatsu machines are supplied with Komatsu original anti-
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freeze in the coolant when the machine is shipped.
This anti-freeze is effective in preventing corrosion of the
cooling system.
The anti-freeze can be used continuously for two years or
4000 hours. Therefore, it can be used as it is even in hot
areas.
Anti-freeze is inflammable, so be extremely careful not to
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expose it to flame or fire.
168
MAINTENANCE.