3-10
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3.2.5
CHECKING OIL LEVEL OF HYDRAULIC OIL TANK
PRESSURE WITHIN HYDRAULIC OIL TANK
The inside of the hydraulic tank is dangerous because it is high temperature and pressurized.
Before removing the filler port plug (2), stop the engine, remove breather head cap (1), and then press the valve to
release the pressure in the hydraulic oil tank.
For refilling procedures of the hydraulic oil, see "5000 HOUR INSPECTION & MAINTENANCE PROCEDURES" in
Chapter 4.
1
1
The hydraulic oil tank is on the right side.
1.
Move the machine to a level and firm place.
2.
Retract the arm cylinder and bucket cylinder, and
place the bucket and dozer (when installed) on the
ground.
3.
Stop the engine and move the pilot control shut-off
lever to the "LOCKED" position.
G
L
H
2
4.
Check the oil level through sight level gauge (G)
provided on the side of the hydraulic oil tank.
If the reading falls within the range of "H" to "L", the
oil level is normal.
The oil level varies depending on the oil
temperature. Use the following rough standard at
inspection.
• Before operation: Near the "L" level (oil temp. 10
to 30 degrees C (50 to 86 degrees F))
• During normal operation: Near the "H" level (oil
temp. 50 to 80 degrees C (122 to 176 degrees
F))
Do not supply oil to the "H" level or more.
If the hydraulic oil tank becomes full, it can cause damages to the tank and the components and spray of the
hydraulic oil.
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