Komatsu PC80MR-5E0, Руководство по эксплуатации и техническому обслуживанию, Страница: 273 / 412

FILTER
• Filters are extremely important safety parts. They prevent impurities in the oil, fuel, and air circuits from en-
tering important equipment and causing problems. Replace all filters periodically. For details, see Operation
and Maintenance Manual.
However, when working in severe conditions, replace the filters at shorter intervals according to the oil and
fuel (sulphur 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
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WARNING
• 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 caus-
es an electric shock.
• 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 compartment with water.
When washing the machine, be careful not to let water get into the electrical components.
• When removing the connectors of electrical components after washing the machine or in the rain, wipe off
the water drop stuck around connectors before removing the connectors and keep the water drop away
from inside of the connectors.
• 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.
HANDLE HYDRAULIC COMPONENTS
• The hydraulic system is at high temperature during and just after operation. During operations, it is also un-
der high pressure, so when performing inspection and maintenance of hydraulic related equipment, be
careful of the following points.
• Stop the machine on a flat ground, lower the bucket to the ground, and perform the work so that there is no
pressure on the cylinder circuits.
• Always stop the engine.
• Immediately after stopping operations, the hydraulic oil and lubricating oil is at high temperature and high
pressure, so wait for the oil temperature to go down before starting maintenance.
• Even after the temperature has gone down, some parts may still be under internal pressure, so when loos-
ening plugs, bolts, or hose connections, do not stand directly in front of the parts, and loosen slowly to re-
lease the internal pressure before removing.
• When performing inspection and maintenance of the hydraulic circuit, always release the air in the hydraulic
tank to remove the internal pressure.
MAINTENANCE OUTLINE OF MAINTENANCE
4-7
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