Komatsu PC18MR-3, Operation & Maintenance Manual

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USE OF THE MACHINE AND RELATED CONTROLS
124 WEAM012101
4. Extend the boom, arm and bucket cylinders completely, as
shown in the diagram on the right, and remove the filler cap.
Put back the cap and pressurize the tank, lowering the equip-
ment to the ground.
IMPORTANT
q
Make sure that the hydraulic tank is pressurized. If the tank
isn’t under pressure, the pump will suck in air and this will
damage the equipment.
q
If a constant or abnormal decrease in the oil level is ob-
served, thoroughly check the hydraulic circuit, the pistons
and the pump for leaks.
CHECKING THE AIR FILTER CLOGGING INDICATOR
1. Open the engine hood. For further details, see paragraph
"3.2.6 ENGINE HOOD".
2. Check if the red piston is visible in the transparent portion of
the filter clogging indicator (1).
3. If the red piston is visible, clean or replace the filtering ele-
ment immediately.
For further details on how to clean the filtering element, see
"4.9.1.a CHECKING, CLEANING OR CHANGING THE AIR
FILTER CARTRIDGE".
4. After checking, cleaning or replacing the filtering element,
press the knob on the indicator (1), so that the red piston re-
turns to its original position.