23
1
)
When the air relief plug is too loosened, there is a possibility that the air relief plug flies out and
hydraulic oil spills out. Slightly push the air relief plug with the hexagon bar spanner and cover it with
rags so as not to fly out the plug and spill out the hydraulic oil.
2
)
When you loosen the air relief plug, leave it in clamp mode until the plug is tightened again. If you
switch it to unclamp mode while the plug is still loose, there is danger of air being sucked in.
3
)
During air bleeding, since oil for the pump unit becomes short, it is necessary to fill the oil tank with
the hydraulic oil.
4
)
Be sure to perform the air relief work on both the rotating axis and tilting axis.
5
)
After finishing the air relief, cleanly wipe oil spilled around the unit with a waste cloth.
6
)
Take care so as not reduce pressure during clamp.
8-3-4. Maintenance inspection
1) Air may mix in oil during operation because the piping joint, each plug, etc., are loosened. At this
time, bleed the air according to the procedures of the above.
2) The hydraulic oil is deteriorated when it is used for a long period of time. Replace the oil every year.
3) With the NC rotary table operated after ready for start-up, if a brake alarm occurs, check the air
bleeding for confirmation.
Hydraulic Pressure Spec.
Air relief plug
①
(Rotating axis)
Air relief plug
③
(Tilting axis)
Air relief plug
②
(Rotating axis)
Hydraulic port
for rotating axis
Hydraulic port
for tilting axis
CAUTION
Fig.4