What kind of motor is it? In a typical electric motor the magnets are glued to the can (north and south on opposite sides) and do not move and could never get "stuck together". The brushes can wear out...or need to be adjusted...can't do that on all motors though. Normally when the brushes wear or get grooved (like a disc brake and rotor) you loose power and or the umph from the motor because the electricity can not move from the brush to the commuter.

Here are some pictures to try to describe it. You can see the magnets that do not move, and the brushes that ride on the commuter. After the brushes wear you loose that good contact between brush and commuter and the motor gets weak. Sometimes you get grooves on the commuter and it has to be cleaned or honed. Many motors anymore are throw away motors though.


How it works


The parts of a typical motor






I don't know if any of that helps or not. Just thought I would throw it out there.

Last edited by peachgrower; 08/08/17 02:15 PM.