DCD1007BLR (Type 1) DeWALT Drill - Parts

This motor and switch assembly helps power the drill and control its operation. It includes the motor and trigger switch in one unit. The motor provides the power needed for drilling and fastening, while the switch controls the tool's speed and direction. If the drill will not start, loses power, runs poorly, or does not respond when the trigger is pressed, this assembly may need to be replaced.

This transmission assembly is a key part of the drill's drive system. It transfers power from the motor to the chuck and helps control the tool's speed and driving force. It also supports hammer drill operation on models equipped with that feature. Over time, the transmission can wear out, causing grinding noises, reduced power, slipping, or poor drilling performance.