Operation & Maintenance Manual──LG918 Wheel Loader
92
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! WARNING
z Because of bad operating conditions and dusty ambient
circumstances, oil easily deteriorates. Change oil as soon as the oil
deteriorates or is mixed with many impurities.
z Add the specified volume of oil. Either too much or too little oil may
cause problems.
z Clean and replace the relative filters when changing oil.
2.1.1 Fuel
z The fuel pump is a precision instrument. If the fuel mixes with water or dirt, the fuel pump will
not work normally.
z Never let impurities enter when changing and adding fuel.
z Strictly choose the fuel brand according to this manual.
z The fuel may be frozen at low temperatures (particularly temperatures lower than -15 ). So it is ℃
necessary to change the kind of fuel according to the ambient temperature.
z Always fill the fuel tank full after operating to prevent the water, which is condensed by the
moisture in the air, from entering the fuel tank.
z If the engine fails to suck fuel or the filters have been just replaced, drain out the air in the circuit.
2.1.2 Coolant
z Use clean and soft water, rain or tap water as coolant. Well water and spring water can be used as
coolant after soft processing and precipitation to avoid causing scale which can influence the
performance of dispelling the heat.
z If the engine overheats, add coolant until the engine cools down completely.
z Add coolant to specified level. If the level is too low, it will cause the overheating of the engine
system and the corrosion of the cooling system.
z Add antifreeze to coolant if ambient temperature is lower than 0 . Drain the coolant out after ℃
working (please refer to CHAPTER III 3.5.3 Operation in Cold Weather) and refill
oil before next working if there is no antifreeze in the coolant.
z Antifreeze is flammable. Keep fire away when adding the antifreeze.
z Never use 100% antifreeze as coolant. Refer to the following table to select the mixing
proportion.
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