16
17
MAINTENANCE
CHUCK REMOVAL
See Figures 15 - 17.
The chuck may be removed and replaced by a new one.
n
Lock the switch trigger by placing the direction of rota-
tion selector in center position.
n
Insert a 5/16 in. or larger hex key into the chuck of the
drill and tighten the chuck jaws securely.
n
Tap the hex key sharply with a mallet in a clockwise
direction. This will loosen the screw in the chuck for
easy removal.
n
Insert the hex key into the chuck and tighten the chuck
jaws securely. Tap sharply with a mallet in a counter-
clockwise direction. This will loosen the chuck on the
spindle. It can now be unscrewed by hand.
12
10
8
6
14
�
HEX KEY
WRENCH
KEYLESS
CHUCK
MALLET
CHUCK JAWS
Fig. 15
12
10
8
6
14
�
SCREWDRIVER
Fig. 16
TO RETIGHTEN A LOOSE CHUCK
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:
n
Lock the switch trigger by placing the direction of rota-
tion selector in the center position.
n
Open the chuck jaws.
n
Insert the hex key into the chuck and tighten the chuck
jaws securely. Tap the hex key sharply with a mallet in
a clockwise direction. This will tighten the chuck on the
spindle.
n
Open the chuck jaws and remove the hex key.
n
Tighten the chuck screw.
Fig. 17
12
10
8
6
14
�
n
Open the chuck jaws and remove the hex key. Using a
screwdriver, remove the chuck screw by turning it in a
clockwise direction.
NOTE:
The chuck screw has left hand threads.
