MAINTENANCE 18.1.5 STORING OIL AND FUEL Keep the fuel indoors to prevent any water, dirt, or other impurities from getting into storage containers. When keeping drums for a long period, put the drum on its side so that the filler port of the drum is at the side to prevent the moisture from being sucked in. Periodically inspect the drums for leakage. If the 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). 18.1.6 FILTERS Filters are extremely important safety parts.
Filters prevent impurities in the fluid and air circuits from entering important equipment and causing problems. Replace all filters periodically. For details, see 23 MAINTENANCE SCHEDULE CHART on page 3-25. However, when working in severe conditions, it is necessary to consider replacing 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 stuck to the old filter. If any metal particles are found, please contact your distributor.
Do not open packs of spare filters until just before they are to be used. Always use genuine Komatsu filters. 18.2 FUEL INJECTION PUMP WARNING Do not attempt to adjust the fuel injection pump. Unsatisfactory operation of the engine may not be due to the fuel injection pump. If unsatisfactory operation persists after servicing the filters, consult your distributor to service the fuel injection pump. Special equipment and knowledge are required for proper injection pump service. These are available at your distributor.
18.3 OUTLINE OF ELECTRIC SYSTEM If the wiring gets wet or the insulation is damaged, the electrical system may short circuit, which could result in hazardous machine malfunction. Services relating to the electric system are (1) check of fan belt tension, (2) check of damage or wear in the fan belt and (3) check of battery fluid level. Never remove or disassemble any electric components installed in the machine. Never install any electric components other than those specified by Komatsu. Be careful to keep the electric system free of water when washing the machine or when it rains.
When working on the seashore or any corrosive environment, carefully clean the electric system to prevent corrosion. When installing a cab cooler or any other electrical equipment, connect it to an independent power source connector. The optional power source must never be connected to the fuse, starting switch, or battery relay. WA450-3MC 3-6