. MAINTENANCE OUTLINES OF SERVICE 4 - 5 FUEL To prevent the moisture in the air from co ndensing and forming water inside the fuel tank, a lways f ill the fue l tank after completing the day's work. and if fuel containing water or dirt is used, it cannot work properly. get in when storing or adding fuel. ation and Maintenance Manual.
The fuel pump is a precision instrument, and if fuel containing water or dirt is used, it cannot wor k properl Be extremely careful not to let impurities Always use the fuel specified in the Oper Fuel may congeal depending on the tem perature when it is used (particularly in low temperature s below - 15 ° C (5°F)), so it is necessary to use the fuel t hat is suitable for the temperature. Before starting the engine, or when 10 mi nutes have passed after adding fuel, drain the sediment and water from the fuel tank. If the engine runs out of fuel, or if the filte rs have been replaced, it is necessary to bleed t he air fr om the c ircuit.
COOLANT AND WATER FOR DILUTIO N preventing corrosion as well as preventing freezing. n issue, the use of antifreeze coolant is essential. matsu Supercoolant (AF-NAC). Komatsu Supercoolant (AF-NAC) has The coolant has the important function of Even in the areas where freezing is not a n issue, the use of antifreeze coolant is essentia Komatsu machines are supplied with Ko matsu Supercoolant (AF-NAC). Komatsu Supercoolant (AF-NAC excellent anticorrosion, antifreeze and coo ling propertiesand can be used continuously for 2 years or 4000 h ours. Komatsu Supercoolant (AF-NAC) is stron gly recommended wherever available. distilled water or tap water (soft water).
ell water (hard water), contains large amounts of minerals (calcium, When diluting the antifreeze coolant, use Natural water, such as a river water or w ell water (hard water), contains large amounts (calcium, magnesium, etc.), and this makes it easie r for scale to form inside the engine or radiator. Once sca le is deposited inside the engine or radiator, it is extrem ely difficult to remove. It also causes overheating du e to poor heat exchange, so when you dilute the coolan t, we recommend that you use water with an overall hardness of less he precautions given in the Operation and Maintenance Manual. re to keep it away from flame. ater differs according to the ambient temperature.
"CLEAN INSIDE OF COOLING SYSTEM (PAGE 4-21)". already mixed. In such cases, never dilute with water. e to cool before adding coolant. rdness o f less than 100 PPM. When using antifreeze, always observe t he precautions given in the Operation and Maintenance Manual. Antifreeze coolant is flammable, so be su The ratio of Supercoolant (AF-NAC) to w ater differs according to the ambient temperature For details of the ratio when mixing, see "CLEAN INSIDE OF COOLING SYSTEM (PAGE 4-21) Supercoolant (AF-NAC) may be supplied already mixed. In such cases, never dilute with water.
If the engine overheats, wait for the engin If the coolant level is low, it will cause over heating, and will also cause problems with corrosion due to air entering the coolant. GREASE ises at the joints. er heavy-duty conditions. Always use the recommended grease and Grease is used to prevent seizure and no This construction equipment is used und follow the change intervals and recomme nded ambient temperatures given in this Operation and Maintenance Manual. Grease fittings not included in the maint grease. enance section are grease fittings for overhaul, so they do not need for long time, add grease. is pushed out when greasing.
If any part becomes stiff after being used Always wipe off all of the old grease that Be particularly careful to wipe off the old grease in places where sand or dirt sticking in the greas e would c ause wear of the rotating parts. not need