III-50
MACHINE CONFIGURATIONHYDRAULIC SYSTEM
Filling with Hydraulic Oil
The oil level changes according to the oil tempera-
ture. Inspect the oil level in the hydraulic oil level
inspection posture shown in the diagram.
Hydraulic oil level inspection posture
1. Start the engine and run it at low speed.
2. Fully retract the lift arm and bucket cylinders
and ground the bucket.
3. Stop the engine.
4. Inspect the oil level using the sight gauge (2).
• When the oil temperature is about 20°C:
The level should be halfway between the up
-
per limit (H) and lower limit (L).
If it is below the lower limit (L), replenish.
• When the oil temperature is about 50 to
80°C:
The level should be near the upper limit (H).
Bleeding the air
After replacing the hydraulic oil, bleed the air
from the hydraulic circuit and hydraulic devic-
es. Failure to do so may damage the hydraulic
devices.
Hydraulic pump
1. Tilt up the canopy.
2. Remove the plug (1) from the hydraulic pump.
3. Once hydraulic oil overflows from the plug hole,
connect the plug (1).
Cylinders
1. Start the engine and run it at low idle for 10 min
-
utes.
2. Set the engine to a low idle, then extend and
contract all the cylinders 4 or 5 times, without
going to the stroke end.
3. Run the engine at high speed, then extend and
contract all the cylinders 4 or 5 times, without
going to the stroke end.
4. Set the engine back to a low idle, then extend
and contract all the cylinders 4 or 5 times to the
stroke ends.
T7G008A
H
L
2
T7G024A
1