.
MAINTENANCE
OUTLINE OF SERVICE
Oil sampling
Sampling interval
250 hours: Engine
500 hours: Other components
Precautions when sampling
Make sure that the oil is well mixed before sampling.
Carry out sampling regularly at fixed intervals.
Do not carry out sampling on rainy or windy days when water or dust can get into the oil.
For further details of KOWA, please contact your Komatsu distributor.
STORING OIL AND FUEL
Keep indoors to prevent any water, dirt, or other impurities from getting in.
When keeping drum cans for a long period, put the drum on its side so that the filler port of the drums is at the side
to prevent moisture from being sucked in.
If drums have to be stored outside, cover them with a waterproof sheet or take other measures to protect them.
To prevent any change in quality during long-term storage, be sure to use in the order of first in - first out (use the
oldest oil or fuel first).
FILTERS
Filters are extremely important safety parts. They prevent impurities in the fuel and air circuits from entering
important equipment and causing problems.
Replace all filters periodically. For details, see the Operation and Maintenance Manual.
However, when working in severe conditions, replace the filters at shorter intervals according to the oil and fuel
(sulfur content) being used.
Never try to clean the filters (cartridge type) and use them again. Always replace with new filters.
When replacing oil filters, check if any metal particles are affixed to the old filter. If any metal particles are found,
contact your Komatsu distributor.
When replacing the engine oil filter, fill the new filter with the specified clean oil, then install it.
Do not open packs of spare filters until just before they are to be used.
Always use Komatsu genuine filters.
OUTLINE OF ELECTRIC SYSTEM
It is extremely dangerous if the electrical equipment becomes wet or the covering of the wiring is damaged. This
will cause an electrical short circuit and may lead to malfunction of the machine. Do not wash the inside of the
operator's cab with water. When washing the machine, be careful not to let water get into the electrical
components.
Service relating to the electric system is checking fan belt tension, checking damage or wear to the fan belt and
checking battery fluid level.
Never install any electric components other than those specified by Komatsu.
External electro-magnetic interference may cause malfunction of the control system controller, so before
installing a radio receiver or other wireless equipment, please contact your Komatsu distributor.
When working at the seashore, carefully clean the electric system to prevent corrosion.
When installing an operator's cab cooler or any other electrical equipment, connect it to an independent power
source connector. The cables to supply power to the optional equipment must never be connected to the fuse,
starting switch, or battery relay.
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