Ryobi HD500 - Manual (Page 11)

Page 11
CHUCK REMOVAL
CHUCK REMOVAL
See Figures 12, 13, and 14.
Whenever necessary to remove the chuck for replacement,
etc., use the following procedure for chuck removal:
1. UNPLUG YOUR HAMMER DRILL.
WARNING:
Failure to unplug your hammer drill could result in
accidental starting causing serious injury.
2. Open chuck jaws. Insert a 5/16 inch or larger hex key
wrench (allen wrench) into the chuck of your drill and
tighten the chuck jaws securely.
3. Tap the hex key wrench sharply with a mallet in a
clockwise direction. See Figure 12. This will loosen the
chuck screw for removal.
4. Open the chuck jaws and remove hex key wrench.
Remove the chuck screw by turning it in a clockwise
direction.
See Figure 13.
NOTE: The chuck screw has left hand threads.
5. Insert hex key wrench in chuck and tighten 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.
See Figure 14.
TO RETIGHTEN A LOOSE CHUCK
The chuck may at times 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, follow these steps:
1. UNPLUG YOUR HAMMER DRILL.
WARNING:
Failure to unplug your hammer drill could result in
accidental starting causing serious injury.
2. Insert hex key wrench into chuck and tighten chuck
jaws securely. Tap allen wrench sharply with a mallet in
a clockwise direction. This will tighten the chuck on the
spindle.
See Figure 12.
3. Open the chuck jaws and remove hex key wrench.
4. Tighten the chuck screw.
NOTE: The chuck screw has left hand threads. See
Figure 13.
Fig. 12
Fig. 14
Fig. 13
OPERATION
CHUCK
CHUCK
JAWS
MALLET
HEX KEY WRENCH
(ALLEN WRENCH)
SCREWDRIVER
HEX KEY WRENCH
(ALLEN WRENCH)
CHUCK
MALLET