100
Lift up the safety lock handle to the locking position.
Open the engine hood.
Slowly loosen the bleeding plug (1) to relieve the
internal pressure of hydraulic oil tank.
Loosen the hose
band and take
out the hose (2)
from the flange
(3).
Loosen the bolt
and take out the
flange (3).
Take out the oil return filter (4).
Place a tray beneath the oil drainage plug (6) to collect the
drained oil.
Loosen the water drainage plug (6) to fully drain the hydraulic
oil.
Loosen the hose and take out the hose (7).
Loosen the bolt and take out the flange (8).
Take out the oil suction filter element (9) and clean.
Clean the inner side of hydraulic oil tank.
Replace ventilator (10) (If installed).
Install the oil suction filter screen (9) to the flange (8).
Reinstall the flange (8) and hose (7) to original positions.
Install new oil return filter to the flange (3).
Reinstall the flange (3) to original position.
Tighten the water drainage plug (6).
Add hydraulic oil through plug hole (1) till the oil level is between upper limit (H) and lower limit
(L) of level gauge (5).
Pressurize the hydraulic oil tank. (If no ventilator is installed)
For machine with ventilator, no pressurization is required.
Tighten the screw plug (1).
Bleed the air from the hydraulic oil circuit
Adjust the machine to hydraulic oil level checking status, wait for the oil to cool down, and then
check the oil level.
Air Bleeding
Important: After the replacement of hydraulic oil, bleed the air from hydraulic pipelines and
hydraulic devices. Otherwise, the hydraulic devices may be damaged.
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