Jet JWL-1840DVR, Operating Instructions And Parts Manual

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9
The bed extension can be mounted to the upper or
lower holes of the lathe at tailstock end, and lower
holes at headstock end. Mounting in upper holes
increases spindle length capacity of lathe.
Mounting extension to lower holes allows use of
tool support during outboard turning.
1. Slide tailstock away from edge of bed.
2. Have an assistant hold bed extension flush to
end of lathe bed, and insert screws and
washers provided with bed extension (P,
Figure 5-6). Snug screws just enough to hold
bed extension to lathe bed.
3. Unscrew stud from lathe bed (O
1
), and insert it
into hole at end of bed extension (O
2
).
4. Adjust bed extension to lathe bed, aligning the
surface and the inside ways as closely as
possible.
IMPORTANT: Top surface of bed extension
must be flush with surface of lathe bed, and
inside ways must be aligned, to allow smooth
movement of tailstock across joint.
5. Slide tailstock over joint where beds meet, so
that clamping nut is centered over joint, as
shown in Figure 5-6. Lock tailstock clamping
handle; this will align the beds.
6. Securely tighten screws (P) in bed extension.
7. Unlock tailstock and slide it back and forth to
test smoothness of joint. Make further
adjustments if needed.
Figure 5-6: installing bed extension (optional)
5.8 Spindle comparator (optional
accessory)
6mm hex key required.
The spindle comparator bracket and centers are
optional and purchased separately. See our
website for information.
The spindle comparator consists of two centers
inserted into the brackets at rear of 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 being turned.
1. Install comparator spur center into guard
bracket, by lifting up on plunger and inserting
comparator spur center until its point is about
even with the point of the spur center in the
headstock spindle. See Figure 5-7. The
plunger in the bracket should engage one of
the holes in the comparator center at this
position.
2. Install comparator bracket to tailstock with
provided fasteners (Figure 5-7). Hand tighten
only.
3. Install comparator dead center in the
comparator bracket and tighten lock handle.
4. Slide tailstock toward headstock until
comparator centers almost touch. Adjust
comparator bracket as needed until centers
align. Tighten screws firmly.
5. Mount spur center with the spindle blank that
you will be turning. Loosen tailstock locking
handle, and slide tailstock until live center is
about 1-inch from spindle blank, then tighten
locking handle. Advance live center using
tailstock handwheel, until live center is secured
in spindle blank.
6. Mount reference spindle between comparator
centers.
NOTE: Reference spindle should be mounted
last after all adjustment of tailstock and quill
has been accomplished with spindle blank.
Likewise, when turning operation is complete,
remove reference spindle first.
Figure 5-7: installing comparator (optional)