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OPERATION
COLD WEATHER OPERATION
COLD WEATHER OPERATION INFORMATION
If the ambient temperature becomes low, it becomes difficult to start the engine, and the coolant may freeze.
Follow the instructions described as follows.
FUEL AND LUBRICANTS
Change fuel and oil with ones of low viscosity for all components.
For the details of specified viscosity, see "METHOD FOR USING FUEL, COOLANT AND LUBRICANTS AC-
CORDING TO AMBIENT TEMPERATURE".
COOLANT
•
Coolant is toxic. Be careful not to get it into your eyes or on your skin.If it should get into your eyes
or on your skin, wash it off with large amounts of fresh water and see a doctor immediately.
•
When handling the cooling water containing coolant that has been drained during changing the
coolant or repair of radiator, contact your Komatsu distributor or request a qualified company to
perform the operation. Coolant is toxic, so never pour it into drainage ditches or drain it onto the
ground surface.
NOTICE
Komatsu recommends the use of Non-Amine Engine Coolant (AF-NAC) as coolant.
Non-Amine Engine Coolant (AF-NAC) is already diluted with distilled water, so it is not flammable.
For the concentration of Non-Amine Engine Coolant (AF-NAC), see "METHOD FOR USING FUEL, COOLANT
AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE".
DEF
NOTICE
•
DEF freezes at –11 °C {12.2 °F} .
If DEF in DEF tank freezes, it may expand and the devices in the tank may be broken or the parts
may be affected. Add DEF to the specified amount for cold weather (below the level of when DEF
may freeze).
•
If DEF or the machine equipped with DEF system cannot be stored at the outside temperature is
lower than –11 °C {12.2 °F} , DEF in the tank may freeze. Ask your Komatsu distributor for discharg-
ing of DEF, and keep it in the condition free from freezing.
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WARNING
COLD WEATHER OPERATION
3-245
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