Komatsu PC110R-1, Operation & Maintenance Manual

Page: 185 / 212

MAINTENANCE PLAN
183
10 - Fill with the prescribed oil until reaching the correct level (8).
Use oil of the prescribed type only (see “4.3 FUEL, COOL-
ANT AND LUBRICANTS”).
11 - Open the engine hood (see “3.5.1 ENGINE HOOD”) and
loosen the drain screw (9) positioned on the hydraulic pump
until no air bubbles can be noticed in the oil flowing out of the
screw.
Use a 19 mm spanner.
After bleeding the oil, tighten the screw (9) and put back the
filling cap (1).
12 - Make sure that all the control levers are in neutral, start the
engine and let it idle for 2-3 minutes before operating the
work equipment.
Move each piston more than once in order to deaerate the
system; check the level again and top up if necessary.
13 - Close the engine hood and the side cover.
CAUTION
•
Never start the engine with empty tank, since this would
certainly damage the pump.
IMPORTANT
☞
•
The hydraulic oil of the machines equipped with demolition
hammer deteriorates more rapidly than the oil of the ma-
chines used for simple digging operations.
Perform the oil changes according to the indications given
in the table beside.
0 20 40 60 80 100
500
2000
Breaker operating
ratio (%)
Replacement interval (H)
Replacement interval
for hydraulic oil
RWA07630
1500
1000
RWAA1410
9
8
RWAA12290