Komatsu PC22MR-3, Руководство по эксплуатации и техническому обслуживанию

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USE OF THE MACHINE AND RELATED CONTROLS
FUNCTIONING
3-52
5. 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
equipment to the ground.
NOTICE
q
If a continuous or abnormal drop in pressure occurs,
inspect the seals of the hydraulic circuit, the pistons
and the pump thoroughly.
q
Make sure the hydraulic oil tank is pressurised to
prevent the pump from sucking in air.
Check the filter clogging indicator
1. Open the engine hood. For further details, see paragraph
"ENGINE HOOD (3-32)".
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
element immediately.
For further details on how to clean the filtering element,
see "CHECKING, CLEANING OR CHANGING THE AIR
FILTER CARTRIDGE (4-24)".
4. After checking, cleaning or replacing the filtering element,
press the knob on the indicator (1), so that the red piston
returns to its original position.
WEAM014500