Komatsu WA70-7, Руководство по эксплуатации и обслуживанию

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5.2 Basic maintenance guidelines
Maintenance
WA70-7 – VENAM02003
5-11
5.2.1 Fuel, coolant and lubricant specifications
Oil

Oil is used in the engine and in the work equipment under
extremely severe conditions (high temperature, high pres-
sure) and deteriorates with use.
Always use oil that matches the grade and temperature
range specified in the Operation and Maintenance Manual.
Even if the oil is not contaminated, it needs to be changed
after the specified interval.

Oil in a machine corresponds to the blood in a human body.
Handle it carefully to prevent contamination (water, metal
particles, dirt, etc.).
The majority of problems with machines are caused by such
impurities.
Take particular care to prevent contamination during storage
or when refilling.

Never mix oils of different grades or brands.

Always add the specified amount of oil.
Both too much and too little oil may cause problems.

If the oil in the work equipment is not clear, there is probably
water or air entering the circuit. In such cases, please con-
sult your Komatsu distributor for information.

When changing the oil, always replace the related filters at
the same time.

We recommend having the oil analysed periodically to check
the condition of the machine. For those who wish to use this
service, please contact your Komatsu distributor.

When using commercially available oil, it may be necessary
to reduce the oil change interval.

We recommend using the Komatsu oil clinic for a detailed
check of the oil characteristics.