. MAINTENANCE OUTLINE OF SERVICE 4 - 5 FUEL To prevent the moisture in the air fro m condensing and forming water inside the fuel tank, always fill the fuel tank after completing the day's work. ment, and if fuel containing water or dirt is used, it cannot work properly. rities get in when storing or adding fuel. e temperature in the Operation and Maintenance Manual. The fuel pump is a precision instru ment, and if fuel containing water or dirt is used, it cannot work properly. Be extremely careful not to let impu Always use the fuel specified for th e temperature in the Operation and Maintenanc e Manua If the fuel is used at temperatures °C (5°F), the fuel will solidify.
If the fuel is used at temperature result in problems such as a dro If the fuel is used at temperatures lower than the specified temperature (particular ly at temperatur es below -15 If the fuel is used at temperature s higher than the specified temperature, the vis cosity will drop, and this may p in output. Before starting the engine, or when 10 minutes have passed after adding fuel, drain the sediment an d water f rom the fuel tank. If the engine runs out of fuel, or if th e filters have been replaced, it is necessary to bleed the air fro m the circuit. If there is any foreign material in the fuel tank, wash the tank and fuel system. NOTICE er fuel. Always use diesel fuel.
Never use any oth The engine on this machine uses electroni c control and high-pressure fuel injection equipment to enable i t to pro vide good fuel consumption and good exhaust gas chara cteristics. For this reason, high-precision parts and lu bricating ability a re demanded. Using low-viscosity fuel with poor lubricati ng ability will cause a marked reduction in the durabi lity of the engine. COOLANT AND WATER FOR DIL UTION ion of preventing corrosion as well as preventing freezing. not an issue, the use of antifreeze coolant is essential.
The coolant has the important funct ion of preventing corrosion as well as preventin g freezin Even in the areas where freezing is not an issue, the use of antifreeze coolant is e ssential. Komatsu machines are supplied wi th Komatsu Supercoolant (AF-NAC). Komatsu Supercoolant (A F-NAC) has excellent anticorrosion, antifreeze a nd cooling propertiesand can be used continuou sly for 2 y ears o r 4000 hours. As a basic rule, we do not recom mend the use of any coolant other than Komatsu genuine supercoolant ant, it may cause serious problems, such as corrosion of the engine and m. erve the precautions given in the Operation and Maintenance Manual. with distilled water, so it is not flammable.
atsu genuine supercoolant (AF-NAC). If you use another cool corrosion and aluminum parts of the cooling syste When using antifreeze, always obs erve the precautions given in the Operation and Maintenance The Supercoolant is already diluted with distilled water, so it is not flammable. With the Supercoolant (AF-NAC), th e density used for the coolant differs according to the ambient temperature. For details of the coolant density, s ee "CLEAN INSIDE OF COOLING SYSTEM (P AGE 4-27)". Even in areas where it is not consid ered necessary to prevent freezing, always use Supercoolant (A F-NAC) with a density of over 30% in order to pr event corrosion of the cooling system.
with distilled water that does not contain any ions or water-hardening coolant with ordinary water. engine to cool before adding coolant. Supercoolant (AF-NAC) is diluted substances. Never dilute the Super If the engine overheats, wait for the If the coolant level is low, it will caus e overheating, and will also cause problems with corrosio n due t o air entering the coolant.