MAINTENANCE 24.3.5 CHECK ELECTRIC WIRING WARNING If fuses are frequently blown or if there are traces of short circuit on the electrical wiring, locate the cause and carry out repair. Accumulation of flammable material (dead leaves, twigs, grass, etc.) around the battery may cause fire, so always check and remove such material. Keep the top surface of the battery clean and check the breather hole in the battery cap. If it is clogged with dirt or dust, wash the battery cap to clear the breather hole. Check for damage and wrong capacity of the fuse and any sign of disconnection or short circuit in the electric wiring. Check also for loose terminals and tighten and loose parts.
Check the wiring of the battery, starting motor and alternator carefully, in particular. When carrying out walk-around checks or checks before starting, always check if there is any accumulation of flammable material around the battery, and remove such flammable material. Please contact your Komatsu distributor for investigation and correction of the cause. 24.3.6 DRAIN WATER FROM FUEL WATER SEPARATOR With the engine shut off, open the drain valve (1). Turn the valve counterclockwise approximately 1-Ѕ to 2 turns until draining occurs. Drain the filter sump of water until clear fuel is visible. Do not overtighten the valve. Overtightening can damage the threads.
Turn the valve clockwise approximately 1-Ѕ to 2 turns to close the drain valve. Even if a water separator filter is installed be sure to check the fuel tank to remove water and sediment in the fuel. 3-44 WA320-3MC