Hyundai 110D-9 Manual page 204

19) CHANGE THE HYDRAULIC OIL
(1) Lower the forks on the ground and extend the tilt
cylinder to the maximum.
Loosen the cap and relieve the pressure in the
(2)
tank.
Prepare a suitable drain pan.
(3)
(4) To drain the oil loosen the drain plug.
(5) After draining oil, tighten the drain plug.
Fill proper amount of recommended oil.
(6)
Start engine and run continually. Release the air
(7)
by full stroke of control lever.
The oil must be free of bubbles. If bubbles
are present in the oil, air is entering the
hydraulic system. Inspect the suction hoses
and hose clamps for leakage or damage.
20) CLEAN SUCTION FILTER AND REPLACE
RETURN FILTER
Clean and replace the return filter in the following
manner.
(1) Remove the flange by loosening the mounting
bolt.
(2) Remove the return filter from the tank.
(3) Replace the return filter element with a new one.
(4) Remove the suction filter and clean it.
(5) Install the cover on the tank.
Tightening torque : 3.4 0.7kgf m
(24.6 5.0lbf ft)
7-35
Cap
Air breather
Drain plug
Drain pan
Flange
Return
filter
Suction
filter
110D9MI19
Drain
plug
110D9MI20