Craftsman 10137 Operation Manual - Page 15

CHUCK REMOVAL See Figures 9 - 11. The chuck can 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 direction. This will loosen the screw in the chuck for easy removal. MALLET [] Insert the hex key into the chuck and tighten the chuck jaws securely. Tap sharply with a mallet in a counterclockwise direction. This will loosen the chuck on the spindle. It can now be unscrewed by hand. LLET HEX KEY CHUCK HEXKEY < Fig. 9 [] 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. Fig. 11 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: [] 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. Fig. 10 15