Lionel 1684M-1 Motor Assembly - The pictures above provide with with a side and bottom view of a 1684M-1 motor. In 1940 Lionel began using die cast motor housings for some of their small 0-27 style locomotives such as the 1664, 1684 and 1688. The motor shown above has been serviced in our shop, and service doesn't mean we oil it up and put it on a test track. Service means that we rebuild the motor as necessary, replacing bushings, bearings, brushes, springs and even armatures if necessary so that you receive a motor that needs nothing more than installation. Tired of buying and fixing someone else's junk? Buy it an install it!