Is this a reversible drill? If it can run in reverse, it has a
screw inside holding the chuck. It is often an Allen headed
screw.

Once the bolt is out or you know that there is not one, it is time
to get the chuck off. The Allen wrench method works well. Get
the largest possible Allen wrench. Tighten the small end of the L
shaped Allen in the drill chuck. Look at the chuck end of the
drill, not the handle end, to determine counterclockwise rotation.
Get a steel headed hammer, piece of pipe, a hardwood stick, or
something else that can deliver a hard, sharp blow. You need to
swat the long end of the Allen very sharply to deliver a blow that
tries to turn the chuck faster than the motor can turn. All you
have holding against this blow is the motor as you can't hold the
armature in a vise or lock the armature against rotation. Get mad
at it, hit it hard, hit it several times. It will spin off, have
total confidence.
______________________________
Keep the whole world singing . . . .
DanG (remove the sevens)




wrote in message
oups.com...
I'm trying to replace the chuck on my Dewalt DW106 corded drill.
The
instructions with the tool say to chuck an allen wrench into the
chuck
and hit it with a hammer in the counter-clockwise direction.
There
does not appear to be any sort of screw inside the chuck as is
often
mentioned (e.g. in the large volume of previous posts to this
group
about removing chucks). I have whacked the thing a couple
dozen times
with a hammer and tried using WD-40 to maybe loosen things up,
but I
have not made any progress. It hasn't loosened at all. What
else can
I try?