Craftsman 315.111920 - Manual (Page 12)

OPERATION
CHUCK REMOVAL
See Figures 10, 11, and 12.
The chuck must be removed in order to use some
accessories. To remove:
■ Lock the switch trigger by placing the direction of
rotation selector tn center position.
■ Insert a 5/16 inch or larger alien wrench (hex key
wrench) into the chuck of your drill and tighten tiie
chuck jaws securely.
■ Tap the alien wrench sharply with a mallet in a
clockwise direction. See
Figure 10. This will
loosen the screw in the chuck for easy removal.
MALLET
ALLEN
WRENCH
Open chuck jaws and remove alien wrench.
Remove the chuck screw by turning it in a clock­
wise direction. See Figure 11. Note: The screw
has left hand threads.
Insert alien wrench in chuck and tighten chuck
jaws securely. Tap sharply with a mallet in a
counterclocl^se direction. This will loosen chuck
on the spindle. It can now be unscrewed by hand.
See Figure 12.
Fig. 12
TO RETIGHTEN A LOOSE CHUCK
The chuck may become loose on 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, follow these steps;
■ Lock the switch trigger by placing the direction of
rotation selector in center position.
■ Insert alien wrench into chuck and tighten chuck
jaws securely. Tap alien wrench sharply with a
mallet in a clockwise direction. This will tighten
chuck on the spindle.
■ Open the chuck jaws and remove alien wrench.
■ Tighten the chuck screw. Note: The chuck screw
has left hand threads.
Fig. 11
12