Removing the Porter-Cable drill chuck is a job that can be done in just a few minutes. You may need to replace the chuck on the drill because of damage to the chuck. The Porter-Cable drill uses a Phillips head screw to secure the chuck to the drill and removing it is a fairly simple process. You can remove the Porter-Cable drill chuck yourself, saving you time and money.
Turn the Phillips head screw inside the jaws of the Porter-Cable drill in the back of the chuck clockwise with a screwdriver to remove the drill chuck. The screw removes by turning in a clockwise direction because it is a "left hand" screw, designed to turn opposite of the direction the drill chuck turns so it doesn't spin itself out during drill operation.
Place the Allen wrench inside the jaws of the drill with the short end inside the jaws and tighten the drill down on the Allen wrench by turning the drill chuck.
Hit the Allen wrench with the flat side of a hammer so the key turns the chuck counterclockwise.
Turn the chuck the rest of the way counterclockwise by hand until it comes loose of the Porter-Cable drill.