14
9. Adjustments & Maintenance - cont.
Fig. 9.5
Fig. 9.6
Using Large Drill Bits
The machine will accept any drill bits with a number 2 morse taper, providing
the chuck and arbor are removed first.
To remove the chuck and arbor, turn the feed handle anti-clockwise to
expose the hole in the spindle sleeve then align this with the hole in the
spindle and place the drift key through both holes so it is positioned above
the arbor
(Fig. 9.5)
. Using a soft headed mallet, tap the drift key until it
forces the arbor downwards and off the spindle. To avoid possible damage,
place one hand under the chuck to catch it when it becomes disengaged
along with the arbor.
Aligning the Table with the Chuck
To ensure the table is at 90º to the chuck from side-to-side, make sure the
angle scale is set to 0º
(Fig. 9.6)
.
To ensure the table is at 90º to the chuck from front to back, place a drill bit
in the chuck and check the angle with an engineer’s square from the side
of the machine
(Fig. 9.7)
. If any adjustment is required, the table angle can
be changed by using the blind set screw located on the underside of the
headstock
(Fig. 9.8)
. Turn the screw clockwise to raise the front of the table
and anti-clockwise to lower the front of the table until 90º is achieved.
Drift key
Fig. 9.7
Fig. 9.8
Blind set screw