Craftsman 315.271220 User Manual download pdf (Page 14)

OPERATION

CHUCK REMOVAL

See Figures 16, 17, and 18.

The chuck must be removed in order to use some

accessories. To remove:

■ Lock the switch trigger by placing the direction of

rotation selector in center position. See Figure 10.

■ Insert a 5/16 inch or larger alien wrench (hex key

wrench) into the chuck of your drill and tighten the chuck

jaws securely.

■ Tap the alien wrench sharply with a mallet in a

clockwise direction. See Figure 16. This will loosen

the screw in the chuck for easy removal.

MALLET

(HJCXJAVliS

ALIBI

vweof

Fig. 16

Open chuck jaws and remove alien wrench. Remove

the chuck screw by turning it in a clockwise direction.

See Figure 17.

Note: The screw has left hand threads.

Insert alien wrench in chuck and tighten chuck jaws

securely. Tap sharply with a mallet in a counterclock

wise direction. This will loosen chuck on the spindle. It

can now be unscrewed by hand. See Figure 18.

Fig. 18

TO RETIGHTEN A LOOSE CHUCK

The chuck may become loose on 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, follow these steps:

■ Lock the switch trigger by placing the direction of

rotation selector in center position. See Figure 10.

■ 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. 17

1 2 ... 9 10 11 12 13 14 15 16 17 18

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Craftsman 315.271220 User Manual Page 14