We may have found other answers which could help you.
Click here for Chuck Drill Jammedhow can i fix my black and decker h552?
KC1882F Black and Decker drill: what polarity are the battery connections?
how to remove drill bit from balck and decker drill?
How can I fix the chuck on my drill that is jammed in open position?
Removing my Chuck?
How do I remove the drill chuck and repair it? #7935 type 3, 3.6 amps ?