Komatsu PC350LC-8, Operation & Maintenance Manual

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MAINTENANCE
MAINTENANCE PROCEDURE
4-29
The mixing ratio depends on the ambient temperature, but it should always be a minimum of 30% by volume (anti-
freeze/total amount of coolant x 100).
The freezing temperature of undiluted antifreeze is -15°C. Do not store undiluted antifreeze at a temperature of
below -15°C.
Mixing rate of water and antifreeze
WARNING
q
Antifreeze is flammable, so keep it away from flame.
Antifreeze is toxic. When open the drain valve, be careful not to get water containing antifreeze on
you. If it gets in your eyes, flush your eyes with large amount of fresh water and see a doctor at once.
q
When changing the coolant or draining the coolant from the radiator before carrying out repairs, ask a
specialist company to handle any coolant containing antifreeze, or contact your Komatsu distributor.
Antifreeze is toxic, so never pour it into drainage water ditches or drain it onto the ground surface.
Use antifreeze and appropriate water for diluting. (for details, see “COOLANT AND WATER FOR DILUTION (4-
5)“)
We recommend use of an antifreeze density gauge to control the mixing proportions.
Prepare a container whose capacity is larger than the specified coolant volume to catch drained coolant.
Prepare a hose to supply antifreeze coolant and water.
1. Stop the machine on level ground, then stop the engine.
2. Turn valve (1) of the corrosion resistor fully to the right to
close it. (Only machines equipped with corrosion resistor)
Min. atmospheric
temperature
°C Above -10 -15 -20 -25 -30 -35 -40
Amount of antifreeze liter 9.6 11.5 13.1 14.7 16.0 17.3 18.6
Amount of water liter 22.4 20.5 18.9 17.3 16.0 14.7 13.4
Volume ratio (%) 30 36 41 46 50 54 58