MAINTENANCE
CHUCK REMOVAL See Figures 10 - 12. The chuck may be removed and replaced with a new one.
Unplug the drill.
Insert a 5/16 in. or larger hex key into the chuck of the drill and tighten the chuck jaws securely.
Tap the hex key sharply with a mallet in a clockwise di- rection. This will loosen the screw in the chuck for easy removal.
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.
Insert the hex key into the chuck and tighten the chuck jaws securely. Tap sharply with a mallet in a counterclock- wise direction. This will loosen the chuck on the spindle. It can now be unscrewed by hand.
TO RETIGHTEN A LOOSE CHUCK The chuck may become loose on the spindle and develop a wobble. Also, the chuck screw may become loose, caus- ing the chuck jaws to bind and prevent them from closing. To tighten:
Unplug the drill.
Open the chuck jaws.
Insert a hex key into the chuck and tighten chuck jaws securely. Tap the hex key sharply with a mallet in a clockwise direction. This will tighten the chuck on the spindle.
Open the chuck jaws and remove the hex key.
Tighten the chuck screw.
MALLET
CHUCK
JAWS
HEX KEY | KEYLESS |
| CHUCK |
SCREWDRIVER
Fig. 10
Fig. 11
MALLET
HEX KEY
Fig. 12
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