Dewalt DC920 Keyless Chuck Removal?

Chucks are on TIGHT. With the set screw OUT, tighten the largest allen key you can fit in the chuck, and strike the opposite end with a hammer (strike for CLOCKWISE rotation - chuck is tightened opposite hand) The drill should be secured and you should take care that the allen is in tight so as not send it flying. It may take a few whacks but it will free up.

JMoon
October 2008

If it's like the black and decker ones, then put the screw back in, tighten a few threads, then tap a hammer on the back of the screwdriver/allen key and it should loosen up

Jimmylaff
October 2008