MAINTENANCE
CHUCK REMOVAL
See Figures 8 - 9.
The chuck may be removed and replaced with a new one.
nUnplug the drill.
nInsert a 5/16 in. or larger hex key into the chuck of the drill and tighten the chuck jaws securely.
nTap sharply with a mallet in a counterclockwise direction. This will loosen the chuck on the spindle. It can now be unscrewed by hand.
nOpen the chuck jaws and remove the hex key.
TO RETIGHTEN A LOOSE CHUCK
The chuck may become loose on the spindle and develop a wobble. To tighten:
nUnplug the drill.
nOpen the chuck jaws.
nInsert a hex key into the chuck and tighten chuck jaws se- curely. Tap the hex key sharply with a mallet in a clockwise direction. This will tighten the chuck on the spindle.
nOpen the chuck jaws and remove the hex key.
CHUCK
JAWS
HEX KEY
MALLET
KEYLESS
CHUCK
Fig. 8
MALLET
Fig. 9
14