Can motors be rebuilt?
Yes they can, but it is not cost effective. I used to bebuild them for my own use. Replacing brushes can be done easily but usually the motor has to be removed. There is not always a warrantee with rebuilt motors. Usually when the brushes wear out so has the armature and commutator, so replacing the brushes gives the motor a little more life if any at all. Once the motor is taken apart and bearings replaced you need special equipment to align the bearings perfectly. I used them for temporary replacements in customers power units while the replacement motor was ordered. These motors worked but some not for long. I stopped rebuilding them years ago since it was not worth my time and there were so many types of motors in power units now. I discarded a large box of old motors and motor parts many years ago.
