HANDLE ELECTRICAL COMPONENTS
• When the battery disconnect switch key is turned to OFF position for the maintenance work, always
pull out the key and keep it with you. If the key is left in the switch, someone may turn on the power
by mistake. It is dangerous that causes an electric shock.
For the operation of the battery disconnect switch, see “BATTERY DISCONNECT SWITCH (3-110)”.
• It is extremely dangerous if the electrical component becomes wet or the covering of the wiring is
damaged. This will cause an electrical leakage 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.
• Wipe off the water drop stuck around connectors before removing the connectors, and do not let water drop
get into the connectors when removing the connectors of electrical components after washing the machine
or in the rain.
• Checking and maintenance items are checking fan belt tension, checking damage of the fan belt and
checking battery fluid level.
• Komatsu recommends installing electric components specified by Komatsu.
• External electro-magnetic interference may cause malfunction of the control system controller. Accordingly,
consult your Komatsu distributor before installing a radio receiver or other wireless equipment to the ma-
chine.
• When working at the seashore, keep the electrical component clean to prevent corrosion.
• When installing electrical component, connect it to the special power supply connector.
Do not connect the optional power supply to the fuse or starting switch or battery relay, etc.
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