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G9729 Combination Lathe/Mill
To install a chuck:
1. Unplug the lathe/mill!
2. Place
a piece of plywood across the lathe
bed and position it just under the spindle.
3. Clean the mating surfaces with a paint brush
or
rag, then wipe the surfaces with your
hand. If there is grit on the surfaces you
will be able to feel it. Keep wiping until it is
clean.
4. Place a socket head screw into one of the
holes
in the back plate. Lift the chuck up to
the spindle and align the threaded hole in the
back of the chuck with the screw.
5. While supporting the weight of the chuck,
turn
the screw three turns. DO NOT tighten
at this time, just snug the screw a little bit.
Rotate the spindle and repeat the steps on
the last two screws.
6. Return
to the first screw and tighten it a little
more. Tighten the other screws also but only
enough so the gap between the chuck and
the back plate remains even.
7. Finally,
tighten all three screws until the gap
between the chuck and the back plate is
closed and the screws are tight.
Figure 10. Removing screw from back of chuck.
Chuck and back plate
join here.
Socket head cap screw
Lathe Chuck
Removal
ALWAYS place a piece
of plywood over the
bed-ways of the lathe
before removing or
installing a lathe chuck.
This helps by cover-
ing
the sharp corners
of the bed, protecting
your hands and fingers
from a pinch injury.
Always disconnect the power to the machine
before making adjustments, set-up changes
or cleaning. Failure to do so could result in
injury to yourself and others.
To remove a chuck:
1. Unplug
the lathe/mill!
2. Place
a piece of plywood or a chuck cradle
across the lathe bed and position it just
under the chuck. The board should be at
least 8" wide and 10" long.
3. Locate
the three socket head cap screws on
the back of the back plate and remove two of
them. (Figure 10).
4. Loosen
the last screw, then tap the edge of
the
chuck with a rubber or wooden mallet
to
loosen the seal between the chuck and
plate.
5. Remove the last screw and the chuck.
Note—Support the bottom of the chuck with
a
block or an assistant. It is important that
you are ready to support its weight (35-50
lbs. depending on the chuck).