If your drill has a removable chuck, then the process entails a series of simple steps. First, you’ll need to open the chuck and locate the mounting screw positioned at the interior foot of the chuck where it’s fixed onto the drill. Untighten the screw using a screwdriver and remove it.
The next step involves clamping the chuck with a wrench and then rotating to untighten it from the drill. This might necessitate hitting the wrench with a metallic tool such as a harmer while the drill is safely secured on a table. Upon hitting or rotating the wrench, the chuck should also turn and untighten free from the head of the drill. Once you’ve removed the chuck, the reverse of the above procedure should be followed when installing another one.