1. Park the machine on the level and firm
ground, swing the upper structure so that
drain plug (1) on the bottom of hydraulic oil
tank is positioned to the midpoint of right and
left track shoe.
2. Retract the arm cylinder and bucket cylinder,
place the bucket and dozer (when installed)
on the ground and stop the engine.
3. Move the pilot control shut-off lever to the
"LOCKED" position.
4. Remove the cover under the hydraulic oil
tank.
5. Clean the surface around the hydraulic oil
tank to keep it away from foreign materials.
6. Press breather cap (2) on the top of the
hydraulic oil tank several times (5 - 7 times)
to release the inner pressure of the hydraulic
oil tank.
7. Remove bolt (3) of the tank upper cover, and
remove cover (4).
1
3
2
4
F
•Do not drop bolts or others into the tank during the work.
•Dispose of the drained waste oil properly as the industrial waste.
8. Place a container for drain oil under drain
plug (1) on the bottom of the hydraulic oil
tank.
9. Loosen drain plug (1) on the bottom of
hydraulic oil tank slowly and drain hydraulic
oil completely.
10. Clean drain plug (1) and install it in place.
Tightening Torque: 98 to 118 N
･
m (72.6 to
87.4 lbf
･
ft)
11. Refill hydraulic oil through fuel inlet (F) on
the top of the hydraulic oil tank.
Pour the oil while checking the oil level with
level gauge (G).
12. Attach filler port cover (4) with bolt (3).
Tightening torque: 20.7 to 25.3 N
･
m (15.3 to
18.7 lbf
･
ft)
H
L
A
3
4
G
13. Start the engine, run it at low idling for several (5 to 7) minutes. After that, operate each cylinder
and swing the machine to return it to the hydraulic oil inspection position. Stop the engine and
check the oil level, and if it is low, refill the hydraulic oil.
[
4. MAINTENANCE
]
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