DeWalt DWD112 Armature Replacement

Remove seven TR20 Torx Security screws from the side of the drill.

Remove the top cover to reveal the inside of the drill.

Set the top cover of the drill aside.

Using one hand grab the trigger box and with the other grab the end of the wire connecting to the trigger box and disconnect the wire.

Disconnect the second connected wire from the top of the trigger box.

Lift the trigger box up to reveal the bottom side.

Disconnect the first connected wire from the bottom of the trigger box.

Disconnect the last wire from the trigger box using the same method from the previous step.

After all four wires are disconnected, the trigger and power cord are separated from the drill.

Take note of the keyless chuck and the meshing of the gears.

Grab the metal chuck by the rotating spindle as if you are to tighten in a drill bit.

Lift the metal chuck out of its resting place and set aside.

With your left hand, grab hold of the field, which is the large metal block with coils looped around the inside.

Use your other hand to take the bearing out from the end of the gear connected to the armature.

Lift the field up once more with one hand and grab the cooling fan with the other hand and gently slide the armature out of the field.