18. OUTLINES OF SERVICE
l Use Komatsu genuine parts for replacement.
l When changing or adding oil, do not use a different type of oil.
l Unless otherwise specified, the oil and coolant used at the time of shipment from the factory are as
shown in the table below.
Item Kind of fluid
Hydraulic tank
SAE IOW
API classification CD
ASTM D975 No. 2
Fuel tank
(However, ASTM D975 No. 1 is
used for the winter season
(October to March)
Radiator
Komatsu Super Coolant
(AF-ACL) 41% added to water
18.1 OUTLINE OF OIL, FUEL, COOLANT
18.1.1 OIL
Oil is used in the engine and work equipment under extremely severe conditions (high temperature,
high pressure), and it deteriorates with use.
Always use oil that matches the grade and temperature for use given in the Operation and
Maintenenance Manual. Even if the oil is not dirty, always replace the oil after the specified interval.
Oil corresponds to blood in the human body, so always be careful when handling it to prevent any
impurities (water, metal particles, dirt, etc.) from getting in.
The majority of problems with machine are caused by the entry of such impurities.
Take particular care not to let any impurities get in when storing or adding oil.
Never mix oils of different grades or brands.
Always add the specified amount of oil.
Having too much oil or too little oil are both causes of problems.
If the oil in the work equipment is not clear, there is probably water or air getting into the circuit.
In such cases, please contact your Komatsu distributor.
When changing the oil, always replace the related filters at the same time.
We recommend you to have an analysis made of the oil periodically to check the condition of the
machine. For those who wish to use this service, please contact your Komatsu distributor.
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