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OPERATION
COLD WEATHER OPERATION
If the temperature becomes low, it becomes difficult to start the engine, and the coolant may freeze, so do as follows.
FUEL AND LUBRICANTS
Change to fuel and oil with low viscosity for all components. For details of the specified viscosity.
See "FUEL, LUBRICANTS COOLANT SPECIFICATIONS" on page (3-8).
COOLANT
Antifreeze 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 amount of fresh water and see a doctor at once. When changing the coolant contact your Komatsu
distributor. Antifreeze is toxic, so do not dispose of antifreeze in drainage ditches, sewers, on the ground or other areas always
trap and recycle this fluid.
Never use methanol, ethanol or propanol based antifreeze. Never use flammable liquids in the cooling system. Avoid using
any leak-preventing agent, regardless if it is sold separately or in antifreeze. do not mix one antifreeze with a
different brand.
For details on the antifreeze mixture when changing the coolant.
See "FLUSHING THE COOLING SYSTEM" on page (3-20).
Standard requirements for permanent antifreeze:
•
SAE J1034
•
FEDERAL STANDARD O-A-548D
PRECAUTIONS AFTER COMPLETION OF WORK
To prevent mud, water, or the undercarriage from freezing and making it impossible for the machine to move on the
following morning, always observe the following precautions.
Remove all the mud and water from the machine body. In particular, wipe the hydraulic cylinder rod clean to prevent
damage to the seal caused by mud or dirt on the rod surface getting inside the seal together with drops of water.
Park the machine on hard, dry ground. If this is impossible, park the machine on wooden boards. The boards help protect
the wheels from being frozen in soil and the machine can start next morning.
Open the drain valve and drain any water collected in the fuel system to prevent it from freezing.
AFTER COLD WEATHER
When season changes and the weather becomes warmer, do as follows.
Replace the fuel and oil for all parts with oil of the viscosity specified. For details. See "FUEL LUBRICANTS AND
COOLANTS" on page (3-8).
WARMING UP THE STEERING
When the temperature is low, do not start the operation of the machine immediately after starting the engine.
Slowly operate the steering wheel to the left and right to warm up the oil in the steering valve. (Repeat this operation for
about 10 minutes to warm up the oil.)
WA320PT-5L
2-85
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