Komatsu PC20R-8, Руководство по эксплуатации и техническому обслуживанию

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MAINTENANCE PLAN
167
11-Extend the boom, arm and bucket cylinders completely as in-
dicated in the figure and remove the filling cap (1).
Put back the cap and pressurize the inside of the tank lower-
ing the equipment to the ground.
12-Make sure that all the control levers are in neutral and let the
engine idle for 2÷3 minutes before operating the work equip-
ment.
Move each piston more than once in order to deaerate the
system; check the level again and top up if necessary.
CAUTION
•
Do not start the engine with empty tank, since this would
certainly damage the pump.
IMPORTANT
☞
•
The hydraulic oil of the machines equipped with demoli-
tion hammer deteriorates more rapidly than the oil of the
machines used for simple digging operations.
Perform the oil changes according to the indications giv-
en in the table beside.
RWA06730
0 20 40 60 80 100
500
2000
Breaker operating
ratio (%)
Replacement interval (H)
Replacement interval
for hydraulic oil
RWA10220
1500
1000