Kobelco SK55SRX-6, Руководство по эксплуатации

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4.16 1000 HOUR (12-MONTH) INSPECTION & MAINTENANCE
PROCEDURES
Thoroughly read and understand "1. SAFETY PRECAUTIONS" of this manual before performing the
inspection and maintenance.
Follow this section together with daily, 50-hour, 250-hour and 500-hour inspection and maintenance.
4.16.1 REPLACING RETURN FILTERS
The return filter needs delicate treatment because
it works as an important part in removal of
contaminant in the hydraulic oil to prevent failure
of hydraulic components and maintain a long
service life.
•Immediately after the engine is stopped, the inside of the hydraulic oil tank is heated and pressurized
and it is very dangerous. Before removing the return filter, stop the engine and then press the valve
head on top of the breather cap to release the pressure in the hydraulic oil tank.
•Wait for the hydraulic oil to cool down before the return filter replacement.
Replace the return filter with a new one after 50 hours of operation for the first time.
When the hydraulic breaker is attached, the deterioration of the hydraulic oil is faster than that of the
normal bucket digging work. Replace the return filter and hydraulic oil earlier than the specified time.
For the replacement interval (hours), see "PERIODIC INSPECTION AND MAINTENANCE CHART OF
NIBBLER AND BREAKER" in Chapter 7.
[ 4. MAINTENANCE ]
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