Chuck removal, To retighten a loose chuck, Operation – Craftsman 315.279940 User Manual
Page 11: See figure 10, Mallet two speed gear train (hflo) hex key wrench, See figure 11, See figure 12, Screwdriver
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OPERATION
CHUCK REMOVAL
See Figure 10, 11, and 12.
The chuck must be removed in order to use some
accessories. To remove:
■ Unplug your drill.
WARNING: Failure to unplug your drill could result in
accidental starting causing serious injury.
Place two speed gear train in the low setting and rotate
torque adjusting ring to the maximum torque setting.
Insert a 8 mm (5/16 in.) or larger hex key wrench into
the chuck of your drill and tighten the chuck jaws
securely.
Tap the hex key wrench sharply with a mallet in a
clockwise direction.
See Figure 10.
This will loosen the screw in the chuck for easy
removal.
MALLET
TWO SPEED
GEAR TRAIN (HFLO)
HEX KEY WRENCH
Fig. 10
■ Open the chuck jaws and remove hex key wrench.
Remove the chuck screw by turning it in a clockwise
direction.
See Figure 11.
Note: The chuck screw has left hand threads.
Insert hex key wrench into chuck and tighten 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.
See Figure 12.
Fig. 12
TO RETIGHTEN A LOOSE CHUCK
The chuck may become loose on the spindle and develop
a wobble.
To tighten, follow these steps:
■ Unplug your drill.
^ WARNING: Failure to unplug your drill could result in
** accidental starting causing seriou? injury.
■ Open the chuck jaws.
■ Insert hex key wrench into chuck and tighten chuck
jaws securely. Tap hex key wrench 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
wrench.
■ Tighten the chuck screw.
Note: The chuck screw has left hand threads.
SCREWDRIVER
Fig. 11
1 1