Dead Centers - Promac 941A Operating Instructions Manual

To install a chuck/faceplate, do these
steps:
1. DISCONNECT LATHE FROM THE
POWER SOURCE!
2. Insert the three mounting studs into the
back of the chuck and tighten them down.
If you are switching chucks, take the
mounting studs out of the previously
removed chuck and use them in the chuck
you are going to install. Also, make sure
that a chuck mounting nut is on each of the
studs.
3. Make sure that the knurled lock plate is
rotated all the way toward the front of the
lathe.
4. Insert the chuck onto the spindle nose.
5. Rotate the knurled lock plate toward the
back of the lathe until it stops. If the lock
plate will NOT rotate more than a fraction
of an inch, then the chuck is not completely
inserted. Make sure the chuck is completely
inserted so the lock plate can be rotated
properly.
6. Hold the chuck/faceplate with your hand
or a key. Using a 17mm wrench, snug the
three chuck mounting nuts to the back of
the knurled lock plate, then final tighten all
three with even pressure.
7. Remove all wrenches and chuck keys
from the chuck/spindle nose.
8. Move the lathe chuck guard down over
the chuck before operating, or the lathe will
not start.

Dead Centers

To install the tailstock dead center, do
these steps:
1. Familiarize yourself with the tailstock
components shown in Figure 10.
2. Make sure the dead center and tailstock
quill are clean and free of any dirt, dust,
grease, or oil. Morse tapers will not
interlock when dirt or oil are present on the
mounting surfaces.
3. Extend the quill approximately 1".
4. Slide the dead center into the tailstock
quill as Shown in Figure 11 .
Figure 10. Tailstock components.
Figure 11 .Inserting dead center into
tailstock quill.
To remove the tailstock dead center, do
these steps:
1. Use the tailstock handwheel to move
the tailstock quill all the way back into the
tailstock until the handwheel will no longer
turn (this will push the dead center out of
the quill).
2. Pull the dead center out of the tailstock
quill.
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