There is a torx headed screw inside the chuck that is reverse thread (Right hand to loosen) - remove that then the chuck will spin off standard thread (Left hand loosen) Most of the time I chuck a 1/2" allen wrench into the chuck, mount the drill in a vise, and strike the wrench with a hammer to get the chuck off
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There is a torx headed screw inside the chuck that is reverse thread (Right hand to loosen) - remove that then the chuck will spin off standard thread (Left hand loosen)
Most of the time I chuck a 1/2" allen wrench into the chuck, mount the drill in a vise, and strike the wrench with a hammer to get the chuck off