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MAINTENANCE
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 and use again the filters (cartridge type). Always replace them with new filters.
•
When replacing oil filters, check if any metal particles are attached to the old filters.
If any metal particles are found, consult your Komatsu distributor.
•
Do not open packages of spare filters until just before they are to be used.
•
Komatsu recommends using Komatsu genuine filters.
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 (3-113)".
•
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 drops stuck around connectors before removing the connectors and do not let water
drops get into the connectors when removing the connectors of electrical components after washing the
machine or in the rain.
•
Checking and maintenance items are the checking fan belt tension, the checking damage of the fan belt,
and the checking battery fluid level.
•
Never install any electrical components other than those 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.
HANDLING HYBRID COMPONENTS AND HIGH VOLTAGE WIRING
•
Never remove and disassemble the hybrid devices (motor-generator, capacitor, inverter, electric
swing motor). The high voltage may be accumulated in the devices and wirings. If you touch them
by mistake, it may cause an electric shock and may lead to serious personal injury or death.
In addition, if they are removed or disassembled by mistake, it will cause failure of the machine.
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WARNING
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DANGER
OUTLINE OF MAINTENANCE
4-9
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