How do I remove the keyless chuck from a Dewalt DC920 Drill/Driver? I removed the reverse thread torque head screw and expect the keyless chuck to loosen for remove. It didn't loosen up when the screw was removed.
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
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