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Model G7943/G7944 (Mfg. 10/02+)
The drill chuck attaches to the spindle by means of
the arbor, shown in Figure 14. Matched tapers on
the arbor and the inside of the chuck create a semi-
permanent assembly when properly joined.
Figure 14. Chuck components.
Drill Chuck
Chuck Key
Arbor
Drift Key
Drill Chuck & Arbor
To assemble the drill chuck and mount it to
the spindle:
1. Use mineral spirits to thoroughly clean the drill
chuck, arbor, and spindle sockets and dry all
surfaces before assembly. Follow all safety
warnings on the container of the mineral
spirits. Failure to clean the mating surfaces
may cause the tapered fit to loosen during
operation, resulting in separation and an
unsafe condition.
2. Use the chuck key to adjust the jaws of the
drill chuck until they are inside the drill chuck
body.
3. Place the drill chuck face down on a
workbench. The arbor has a short taper and
a long taper. Place the short taper into the
socket in the back of the drill chuck and tap it
with a rubber or wooden mallet, as shown in
Figure 15. If the chuck fails to remain secure
on the arbor, repeat Steps 1 & 2.
Figure 15. Seating arbor into chuck.
Tang-Side
Up
DO NOT use a steel hammer on the drill
chuck to seat the arbor into the spindle.
You will damage the chuck and/or spindle,
which may make them unusable or unsafe.
Figure 16. Seating arbor and chuck into spindle.
4. Slide the arbor into the spindle socket while
slowly rotating the drill chuck. The socket has
a rectangular pocket where the tang (or flat
portion of the arbor shown in Figure 15) fits
into.
5. Seat the chuck with a rubber mallet, as shown
in Figure 16.