Black & Decker has manufactured a variety of corded and cordless drills over the years. Most of the recent models are equipped with a keyless chuck, but older models utilised a keyed chuck that required a geared chuck key to loosen and tighten the chuck around the drill bit. In either case, the old chuck can be removed and a new keyless chuck installed. It takes only a few minutes.
Open the jaws to their widest point and remove any bit that was installed in the chuck.
Locate the screw in the back of the chuck by looking through the space created by the opened jaws. Insert an Allen wrench into the screw and turn counter-clockwise to remove the screw.
Set the drill's direction indicator to reverse. Hold the drill chuck firmly with one hand, and squeeze the drill's trigger with the other to loosen the chuck from the driveshaft. Rotate the chuck counter-clockwise to remove it from the driveshaft.
Thread a new keyless chuck onto the driveshaft. Rotate the chuck clockwise until it is hand tight.
Set the drill's direction indicator to forward. Hold the chuck firmly with one hand and squeeze the trigger with the other hand to further tighten the chuck onto the shaft.
Turn the chuck counter-clockwise to open the jaws to their widest point. Re-insert the screw into the back of the chuck, and tighten with an Allen wrench.