i would STRONGLY recommened that you replaces the cleanning motor, and check/replaces the bearing/drives/gear wheel asembly..you are replacesing the blown bord.. BUT what caused it to blow, its has been in my experiansce(5 other pepoles trackcleaners) that the cleaning wheel flange, (which is madeoff a nyloin matireal) de laminates, ..as it delaminates, it wraps around the axle.. as it wraps around the axle, it over heats due to friction.. the nyloin melts, is drawn into the bearings. when the axles stops cleaning/spinging. the nlyion sets.. causeing the nbearings to sease up/get stiff.this inturn, leads to the cleaning motor drawing more,and more current to opersate.. this leads tothe main bords to faill ...just replaceing the bord, will not fix the problem, just tempory fix a syprton..
i would advise all ownrs off these lococs toREGULLARY check behind the cleaning wheels, and remove the nyloin build up stright away...