21
comes near the center of the oil gauge on the side of the tilting axis base.
5
)
Upon completion of all the works, check that the O-ring on the cover
①
mounting part does not
protrude from the groove and then mount cover
①
.
6
)
Operate the NC rotary table to check that the table clamp alarm does not light up on both the tilting
axis side and the rotating axis side. If the alarm lights up, it indicates that the pressure does not
reach the specified value because of incomplete air relief. In such a case, perform the air relief work
again on the lighting side.
1
)
When the air relief plug is abruptly loosened, the hydraulic oil may spill out from the air relief plug.
Slightly push the air relief plug with the hexagon bar spanner and cover it with rags to prevent the
plug from flying out and the hydraulic oil from spilling out. Be careful that a steel ball jumps out when
the plug is removed.
2
)
Once some air has been removed, leave it in clamp/unclamp for five seconds or longer and then
remove the air again until there is none left.
3
)
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.
4
)
The hydraulic oil is reduced during air bleeding. Perform the work while checking the oil level in the
oil tank.
5
)
Be sure to perform the air relief work on both the rotating axis and tilting axis.
6
)
Fill the oil tank with the hydraulic oil to a high level of oil gauge.
CAUTION
Front View of Vertical Table Face
Steel ball
Oil with bubbles
Detail of Air Relief Plug
Hexagon
socket
headless set screw
(Flat Point)
Fig. 3-1
Fig. 3-2
Tightened
締
Leaking