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Model G0740 (Mfg. Since 11/12)
-39-
Removing Tooling
Figure 44. Drift key slot in the side of the quill.
Offsetting Tailstock
Drift Key Slot
To install tooling in the tailstock:
1.
With the tailstock locked in place, unlock the
quill, then use the handwheel to extend it
approximately 1".
2. Thoroughly clean and dry the tapered mating
surfaces of the quill and the center, making
sure that no lint or oil remains on the tapers.
Note: If the tapered tool shaft has a tang,
align it with the slot in the back of the quill
before seating it.
3.
With a firm and quick motion, insert the tool
into the quill. Check to see if it is firmly seated
by attempting to twist it—a firmly seated tool
will not twist.
4.
Unlock the tailstock and move it until the tip
of the tool is close to, but not touching, the
workpiece, then re-lock the tailstock.
5.
Start spindle rotation, unlock the quill lock
lever, then turn the quill handwheel clockwise
to feed the tool into the workpiece.
However, other tooling without tangs, such as
the four remaining tools shown previously, can
still be used
if the potential load will not
exceed
the strength of the tapered fit. For example, this
includes smaller
drill chucks, drill bits, and cen-
ters
.
Note: If the tooling has an open hole in the end
but is too short to be exposed in the drift slot for
removal, then a screw can be threaded into the
end of the tool to provide a solid surface
for the
quill pin
to push against when
the quill is retracted
for tool removal. Otherwise, removal of such tool-
ing may be difficult.
1. Use a shop rag to hold the tool.
2.
Rotate the quill handwheel counterclockwise
until the tool is forced out of the quill.
— If the tool does not come loose by retract-
ing the quill, extend the quill and use a drift
key in the slot shown in the Figure
below
to remove the tool.
The tailstock can be offset from the spindle cen-
terline for turning tapers. Move the tailstock top
casting toward the front of the lathe to machine a
taper at the tailstock end. Conversely, move the
tailstock top casting toward the back of the lathe
to machine a taper at the spindle end
.
Note: The marks on the offset indicator are arbi-
trary. For a precise offset, use a dial indicator to
check quill movement while adjusting the screws.
Tools Needed Qty
Hex Wrench 6mm .............................................. 1
Wrench 17mm.................................................... 1