Reservoir Fluid Type
Ambient Temperature, de-
grees Celsius
Recommended Komatsu Flu-
ids
Min Max
DEF tank DEF -30 °C 50 °C DEF (Note 8)
Air conditioner Refrigerant - - R134a (HFC134A)
Engine oil
pan
Transmis-
sion case
Hydraulic
oil system
Axle Cooling
system
Fuel tank DEF tank Air condi-
tioner
Front Rear
Specified
capacity
ℓ
25.5 62 213 40 40 60.6 300 35.9 1200 g
Refill ca-
pacity
ℓ
23 54 142 40 40 - - - 1200 g
REMARK
Specified capacity means
the total amount of oil including the oil in the tank and the piping. Refill capacity
means the amount of oil needed to refill the system during inspection and maintenance.
Note 1: KDPF engine oil for cold district is deteriorated easily than that for normal area (replace every 500
hours), so replace oil and filter cartridge every 250 hours. For changing maintenance time of machine monitor,
ask your Komatsu distributor to perform the work.
Note 2: Power train oil has different properties from engine oil. Be sure to use the recommended oils.
Note 3: Axle oil AXO80 is capable of preventing the brake and the Limited Slip Differential from creaking. When
only AXO80 is recommended, use Komatsu genuine AXO80 or equivalent.
Note 4: If the daily operation hours of the machine at ambient temperature above 45 °C exceed 12 hours,
TO50
is recommended instead of AXO80.
If TO50 is used, the brake may creak but there is no problem in performance and durability of the brake.
If the machine is equipped with the Limited Slip Differential, use AXO80, regardless of the ambient temperature.
Do not use TO50.
Note 5: For the machine with auto-greasing, see “AUTO-GREASING (3-128)”.
Note 6: Hyper grease (G2-TE) has high performance.
When it is necessary to improve the lubricating performance of the grease in order to prevent squeaking of pins
and bushings, the use of G2-TE is recommended.
Note 7: Non-Amine Engine Coolant (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 coolant is essential.
Komatsu machines are supplied with Non-Amine Engine Coolant (AF-NAC).
Non-Amine Engine Coolant (AF-NAC) has excellent anti-corrosion, antifreeze and cooling properties and
can be used continuously for 2 years or 4000 hours.
Non-Amine Engine Coolant (AF-NAC) is strongly recommended wherever available.
2.
For details of the density of Non-Amine Engine Coolant (AF-NAC), see “METHOD FOR CLEANING INSIDE
OF COOLING SYSTEM (4-20)”.
Non-Amine Engine Coolant (AF-NAC) is supplied already diluted.
In this case, fill up the tank with pre-diluted fluid. (Never dilute the Non-Amine Engine Coolant with ordinary
water.)
Note 8: The DEF freezes at -11 °C. If thawing is necessary, DEF system is automatically heated and thawed
after the engine is started.
RECOMMENDED BRANDS AND QUALITIES OTHER THAN KOMATSU
GENUINE OILS
When using commercially available oils other than Komatsu genuine oil, consult your Komatsu distributor.
REPLACEMENT PARTS RECOMMENDED FUEL, COOLANT
, AND LUBRICANT
7-7
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