Komatsu PC18MR-3, Operation & Maintenance Manual

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USE OF THE MACHINE AND RELATED CONTROLS
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CHECKING THE OIL LEVEL IN THE HYDRAULIC TANK AND TOPPING UP
WARNING
q
Carry out this check when the oil is cold, with the machine
positioned on level ground, bucket and arm cylinders re-
tracted and bucket teeth resting on the ground.
q
Before topping up, stop the engine and eliminate the resid-
ual pressure from the equipment circuits (by shifting the
controls more than once) and from the tank by slowly loos-
ening the filling cap.
1. If the work equipment is not in the conditions shown in the di-
agram on the right, start the engine and run it at high idling
speed, retract the arm and bucket cylinders completely and
lower the boom until the bucket teeth touch the ground. Stop
the engine.
2. Make sure that the oil level is included between the H and L
marks on the sight gauge (G).
IMPORTANT
q
Do not exceed the max. level mark (H). This would damage
the hydraulic circuit and cause the oil to overflow.
q
If too much oil is added and this exceeds the level (H) on
the gauge, turn the revolving frame so that the drain plug
(P) is positioned between the tracks, stop the engine, wait
for the hydraulic oil to cool down and drain the excess oil
through the drain plug (P).
3. If the oil does not reach the level (L), lift the mat (1), remove
the cover (2) and the cover on the filler neck (F), then top up
through the filler neck (F) using the oil recommended in the
lubricant chart (see "4.4 FUEL, COOLANT AND LUBRI-
CANTS").
NOTE
q
The oil level varies according to its temperature. Then keep to
the following instructions:
Before operation: near level (L)
(Oil temperature ranging from 10°C to 30°C)
Normal operation: near level (H)
(Oil temperature ranging from 50°C to 80°C)
RYA01780