Powermatic 3520B - Manual (Page 16)

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3. To remove a spur center or live center, first
remove the workpiece from the Lathe. Insert
the knockout rod (Figure 20) through the
hole in the handwheel and firmly tap the
tapered end of the spur center. The sliding
collar on the knockout rod helps give the
necessary impact without having to use a
mallet against the end of the rod.
IMPORTANT: Hold the center by either placing
your thumb and forefinger on the outside
diameter of the spur center, or wrapping the
center with a rag. The center can be damaged if
allowed to fall.
Face Plate – Installing and Removing
1. Disconnect Lathe from power source.
2. Mount the face plate to your bowl blank.
3. Push in the spindle lock button (Figure 21)
and rotate the handwheel slightly until the
spindle locks. Keep the spindle lock button
pushed in.
4. Install the face plate onto the threads of the
headstock spindle and rotate clockwise
hand-tight. When the Lathe is turned on
(forward rotation), the rotational force will
snug the face plate even further onto the
threads.
If at any time you will be
reversing spindle rotation, make sure the
two set screws in the face plate are tight!
One of these is shown in Figure 22. Failure
to do this may cause the face plate to loosen
from the headstock spindle.
5. To remove the face plate, loosen the two
socket set screws (Figure 22). Engage the
spindle lock button and turn the face plate
counterclockwise with the face plate
wrench, as shown in Figure 21.
Comparator – Installing and Using
The spindle comparator consists of two
comparator centers inserted into the brackets at
the back of the Lathe. The comparator is used to
mount a finished, or “reference spindle” from
which measurements can be taken, the
measurements being transferred to the new
piece which is being turned.
The guard must be removed
to use the spindle comparator. Use caution
and wear a face mask when turning without
the guard installed.
1. Remove the guard from the headstock
bracket.
Figure 20
Figure 21
Figure 22