Kobelco SK55SRX-6, Руководство по эксплуатации

Страница: 157 / 311

4.9 RELEASING INNER PRESSURE IN HYDRAULIC OIL AND
HYDRAULIC SYSTEM
Release the inner pressure in the hydraulic system before the maintenance including attachment and
detachment of the hydraulic components such as hydraulic oil, return filter, suction strainer and cylinder.
4.9.1 RELEASING INNER PRESSURE IN HYDRAULIC SYSTEM
Inside of the hydraulic oil tank is dangerous because it is a high temperature and pressurized.
Before removing the filler port plug, stop the engine and then press the top of the rubber cap or
loosen the flange slowly to release the pressure.
1. Select the level and firm ground, retract the
arm cylinder and bucket cylinder to the
stroke end, and lower the boom to place the
bucket and dozer on the ground, placing the
machine in the "hydraulic oil inspection
position" as shown to the right figure.
2. For the hydraulic pilot type, move the control
lever for the circuit to release the inner
pressure immediately before stopping the
engine with low idle.
Hydraulic Oil Inspection Position
Inner pressure of the hydraulic system cannot be released without using the above procedures.
3. For the manual type, inner pressure can be
released by operating the control lever after
stopping the engine.
4. Move the pilot control shut-off lever to the
"LOCKED" position.
5. Stop the engine.
(Turn the starter switch to the "OFF"
position.)
6. Open the right side cover and support it with
the stay.
7. Press the rubber cap of air breather (2) on
the top of hydraulic oil tank (1) several times
(5 - 7 times) to release the inner pressure of
the hydraulic oil tank.
8. Now the pressures in the hydraulic system
and hydraulic oil tank is released. You can
start the inspection and maintenance of the
hydraulic system.
2
1
[ 4. MAINTENANCE ]
4
4- 17
Copyright©2019 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00017ZE08] [1226CsCshWbYs]