.
MAINTENANCE
RECOMMENDED FUEL, COOLANT, AND LUBRICANT
MAINTENANCE
RECOMMENDED FUEL, COOLANT, AND LUBRICANT
Reservoir
Capacity
Engine oil
pan
Transmission
case
Front brake
oil tank
Steering,
hoist oil tank
Rear brake
cooling oil
tank
Front
suspension
(each)
Spcified
amount of oil
Liters 135 125 2 248 366 20
US gal 35.64 33.0 0.53 65.47 96.62 5.28
Refill
amount of oil
Liters 130 102 2 153 246 –
US gal 34.32 26.93 0.53 40.39 64.94 –
Reservoir
Capacity
Rear
suspension
(each)
Differential
case
Final drive
case (each)
Fuel tank
Cooling
system
Specified
amount of oil
Liters 17.5 132 59 1250 228
US gal 4.62 34.85 15.58 330 60.19
Refill
amount of oil
Liters – 132 59 – –
US gal – 34.85 15.58 – –
Note 1: SAE0W30EOS and SAE5W40EOS must be fully synthetic and HTHS ( High-Temperature High-Shear
Viscosity 150°C) must be equal to or higher than 3.5 cP. Komatsu EOS0W30 and EOS5W40 are the most
suitable oils. If these oils are not available, follow the instruction "RECOMMENDED BRANDS,
RECOMMENDED QUALITY FOR PRODUCTS OTHER THAN KOMATSU GENUINE OIL (PAGE 4-11)"
at the end of this chapter.
Note 2: Powertrain oil has different properties from engine oil. Be sure to use the recommended oils.
Note 3: 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 4: 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 properties and 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, or when checking the latest specifications,
refer to the Komatsu web page or consult your Komatsu distributor.
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