.
MAINTENANCE
RECOMMENDED FUEL, COOLANT, AND LUBRICANT
MAINTENANCE
RECOMMENDED FUEL, COOLANT, AND LUBRICANT
Engine
oil
pan
Damper
case
Idler
(eash)
Power train oil pan
(incl. transmission,
torque converter and
bevel gear cases)
Final
drive
case
(each)
Hydraulic
system
Fuel
tank
Cooling
system
Specified
amount
liter 44 1.5 0.35 90
(EX)26
(PX)36
(EX)120
(PX)106
490 82
US gal 11.62 0.40 0.09 23.78
(EX)6.87
(PX)9.51
(EX)31.70
(PX)28.01
129.46 21.66
Refil
capacity
liter 38 1.5
0.35
60
(EX)26
(PX)36
71 - -
US gal 10.04 0.40 0.09 15.85
(EX)6.87
(PX)9.51
18.76 - -
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: 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) Coolant has the important function of anticorrosion as well as antifreeze.
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 4-20)".
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%.
Note 5: In this range, preheating with a starting aid is necessary.
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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