16
CHUCK REMOVAL – cont’d
4. Open the chuck jaws and remove the hex
key.
5. Open the chuck jaws as far as possible.
6. Remove the chuck screw using a #2
screwdriver (Fig. 11).
NOTE: Turn screw CLOCKWISE to remove
it. This screw has a left-hand thread.
Fig.11
7. Insert the hex key into the chuck and
tighten the jaws of the chuck securely
(Fig. 12). Tap the hex key sharply with a
mallet in a COUNTER-CLOCKWISE
direction. This will loosen the chuck on the
spindle. The chuck can now be unscrewed
and removed from the spindle by hand.
Fig.12
RETIGHTENING A LOOSE CHUCK
After installing the chuck once it has been
removed, the chuck may become loose on the
spindle and develop a wobble. Also, the chuck
screw may become loose, causing the chuck
jaws to bind and prevent them from closing. To
tighten the chuck, follow these steps:
1. Insert the hex key into the chuck and
tighten the chuck securely.
2. Tap the hex key sharply with a mallet in a
CLOCKWISE direction (Fig. 9). This will
tighten the chuck on the spindle.
3. Open the chuck jaws and remove the hex
key.
4. Tighten the chuck screw using a #2
screwdriver.
NOTE: Turn the screw COUNTER-
CLOCKWISE to tighten it. This screw has a
left hand thread.
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