Cold Weather Operation; Cold Weather Operation Information - Komatsu D375A-8 Operation & Maintenance Manual

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 specified viscosity, see "METHOD FOR USING FUEL, COOLANT AND LUBRICANTS ACCORDING 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 using Non-Amine Engine Coolant (AF-NAC) for the 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".
BATTERY
• Battery generates flammable gas. Never bring any open flame near fuel.
• Battery electrolyte is dangerous object. If it gets in your eyes or on your skin, wash it off with a
large amount of water and consult a doctor.
• Battery electrolyte dissolves paint. If it gets on the bodywork, wash it off immediately with water.
• If the battery electrolyte is frozen, do not charge the battery or start the engine with a different pow-
er source. There is danger that the battery may explode.
• Battery electrolyte is toxic. Do not let it flow into drainage ditches or spray it on to the ground sur-
face.
When the ambient temperature drops, the capacity of the battery will also drop. Maintain the battery charging
rate as close as possible to 100%. Insulate it against cold temperature to ensure that the machine can be star-
ted easily in the next morning.
REMARK
Measure the gravity of the electrolyte and calculate the charging rate from the following conversion table.
Electrolyte Temper-
ature
Charging Rate (%)
100
90
k k
k k
20 °C 0 °C –10 °C
1.28 1.29
1.26 1.27
WARNING
WARNING
–20 °C
1.30 1.31
1.28 1.29
COLD WEATHER OPERATION
3-237