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4. Inspection Before Use
Be sure to inspect the following before starting the machine.
4-1 Cleaning of Radiator and Oil Cooler
● Blow air to clean any debris that may be attached to the radiator, oil cooler or
antidust mesh.
An unclean radiator, oil cooler or antidust mesh may cause failure of the
hydraulic equipments or overheating or damage to the engine.
Antidust mesh
Dust-proof plate
4-2 Inspection of Radiator and Coolant Quantity
Perform the inspection after the engine has cooled down.
The radiator cap is pressurized. If you remove the radiator cap while
the engine is overheated, hot steam will burst out, possibly resulting in
burns. Make sure that the water temperature and pressure are reduced,
and then grab the cap with a thick cloth and gradually turn the cap
counterclockwise to loosen and remove it.
● Make sure that the coolant level in the reserve tank is between "FULL" and
"LOW".
If the coolant level is lower than the "LOW" mark, open the reserve tank cap and
supply coolant up to the "FULL" mark. If no coolant is in the reserve tank, further
more, open the radiator cap and supply coolant up to the opening.
Do not open the radiator cap during normal inspections.
● When supplying coolant, be sure to use clean water.
● Before winter, drain the coolant or add antifreeze.
Relationship between concentration of long-life coolant (LLC) and freezing
temperature
Freezing temperature
LLC concentration(volume %)
Down to -10°C (14°F)
20 %
Down to -15°C (5°F)
30 %
Down to -20°C (-4°F)
35 %
Down to -25°C (-13°F)
40 %
A
Cap
Reserve tank
Drain plug
View from A
Oil cooler
