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The three-jaw scroll chuck has removable hardened steel
jaws (
Figure 13
). The outside of the jaws are used to hold
the workpiece from the outer diameter.
Numbered from 1–3, the jaws must be used in the
matching numbered jaw guides, see
Figure
14
.
Note:
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To remove a set of jaws, do these steps:
1.
DISCONNECT POWER TO THE LATHE!
2
. Place a piece of wood over the ways to protect them
from potential damage.
3
. Turn the chuck key counterclockwise and back the
jaws out.
4
. Clean the jaw mating surfaces and apply a film of
white lithium grease to the mating surfaces.
5
. Set the old jaws aside in a safe place free of
moisture and abrasives.
6.
Rotate the chuck key clockwise until you see the tip
of the scroll-gear lead thread just begin to enter jaw
guide #1 (see
Figure 15
).
7.
Insert jaw #1 into jaw guide #1 and hold the jaw
against the scroll gear.
8.
Rotate the chuck key clockwise one turn to engage
the tip of the scroll-gear lead thread into the jaw.
Pull on the jaw now and it should be locked into the
jaw guide.
9
. Repeat the steps on the remaining jaws.
• If installed correctly, all three jaws will converge
together at the center of the chuck.
• If the jaws do not come together, repeat this
procedure until they do.
Replacing Jaws
=`^li\
13
%
Chuck and jaw selection.
=`^li\
14
%
Jaw guide number.
Jaw Numbers
Jaw Guide #1
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15
%
Lead thread on scroll gear.
Lead Thread
All manuals and user guides at all-guides.com