. MAINTENANCE RECOMMENDED FUEL, COOLANT, AND LUBRICANT MAINTENANCE RECOMMENDED FUEL, COOLANT, AND LUBRICANT NOTICE Always use diesel oil for the fuel. To ensure good fuel consumption characteristics and exhaust gas characteristics, the engine mounted on this machine uses an electronically controlled high-pressure fuel injection device. This device requires high precision parts and lubrication, so if low viscosity fuel with low lubricating ability is used, the durability may drop markedly. Note 1: HTHS ( High-Temperature High-Shear Viscosity 150 ° C), specified by ASTM D4741 must be equal to or higher than 3.5 mPa-S. Komatsu EOS0W30 and EOS5W40 are the most suitable oils. Note 2:
Powertrain oil has different properties from engine oil. Be sure to use the recommended oils. Note .3: Axle oil AXO80 has the function of preventing squealing from the brakes and LSD (Limited Slip Differential). If only AXO80 is recommended, use Komatsu genuine AXO80 or equivalent. Note .4: When the ambient temperature is higher than 45 ° C (113 ° F) and the machine operation hour is longer than 12 hours/day, then the use of TO50 instead of AXO80 is recommended. Squealing of the brakes may occur with TO50, but there is no problem with the brake performance or durability. For machines with LSD, use AXO80 regardless of the ambient temperature. Do not use TO50. Note .5:
Hyper grease (G2-T, G2-TE) has a high performance. When it is necessary to improve the lubricating ability of the grease in order to prevent squeaking of pins and bushings, the use of G2-T or G2-TE is recommended. Note .6: Supercoolant (AF-NAC) 1) The coolant has the important function of preventing corrosion as well as preventing freezing. Even in the areas where freezing is not an issue, the use of antifreeze coolant is essential. Komatsu machines are supplied with Komatsu Supercoolant (AF-NAC). Komatsu Supercoolant (AF-NAC) has excellent anticorrosion,antifreeze and cooling propertiesand can be used continuously for 2 years or 4000 hours.
Komatsu Supercoolant (AF-NAC) is strongly recommended wherever available. 2) For details of the ratio when diluting super coolant with water, see "CLEAN INSIDE OF COOLING SYSTEM (PAGE 4-21)". When the machine is shipped from the factory, it may be filled with coolant containing 30% or more Supercoolant (AF-NAC). In this case, no adjustment is needed for temperatures down to -10 ° C (14 ° F). (never dilute with water) 3) To maintain the anticorrosion properties of Supercoolant (AF-NAC), always keep the density of Supercoolant between 30% and 68%.
RECOMMENDED BRANDS, RECOMMENDED QUALITY FOR PRODUCTS OTHER THAN KOMATSU GENUINE OIL When using commercially available oils other than Komatsu genuine oil, consult your Komatsu distributor. 4 - 11 Reservoir Capacity Engine oil pan Transmission case Hydraulic system Axle Cooling system Fuel tank Front Rear Specified Liters 47 65 270 60 56 61 413 US gal 12.42 17.17 71.33 15.85 14.80 16.11 109.10 Refill Liters 38 54 173 60 56 - - US gal 10.04 14.27 45.7 15.85 14.80 - -