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23) FILLING HYDRAULIC OIL
(1) Stop the engine to the position of level check.
(2) Rotate the cap nut counter-clockwise by hand
and push the rod to release the air pressure.
(3) Remove the breather on the top of oil tank and
fill the oil to the specified level.
(4) Start the engine after filling and operate the
work equipment several times.
(5) Check the oil level at the level check position af-
ter the engine stops.
24) CHANGE HYDRAULIC OIL
(1) Lower the bucket on the ground extend the
bucket cylinder to the maximum.
(2) Loosen the cap and relieve the pressure in the
tank by pushing the top of the air breather.
(3) Prepare a suitable container.
(4) To drain the oil loosen the drain plug at the fuel
tank block.
(5) Tighten the drain plug.
(6) Fill proper amount of recommended oil.
(7) Put the breather in the right position.
(8) Start the engine and run continuously. Release
the air by full stroke of control lever.
The oil must be free of bubbles. If bub-
bles are present in the oil, air is enter-
ing in the hydraulic system. Inspect the
suction hoses and hose clamps.
Tighten the drain plug.
Incase of injecting HBHO (Hyundai Bio
Hydraulic Oil) to machines that have
formerly used different hydraulic oil, the
proportion of residual oil must not ex-
ceed 2 %.
Do not mix any other Bio oil, use only HBHO as bio oil.
Pushing
Hydraulic tank
Drain plug
6-38
Cap nut
Rod
Air breather
Fuel tank
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