As soon as you've gotten rid of the screw, put an Allen wrench into the chuck and also transform it to tighten up the chuck. When the wrench is strongly in place, set the drill's transmission to the lowest setup to reduce resistance from the equipments. After that, touch the Allen wrench with a mallet to loosen up the chuck from the drill. Once it's loose, you can unscrew the chuck by hand. Screw your brand-new chuck in its location, tighten it with your Allen wrench, after that replace the screw in the facility.
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