Since the alcohol ran down through the inside of the motor, the simple answer is non-repairable.
Motor parts(brushes, armatures, bearings, retainers, bushings) are simply no longer available. The upper part of the pump is, thats why the cover went on to keep liquids from getting into the motor. This requires motors to be installed head down, so if a leak happened, would not go through motor killing it. Been like this since 2006...
Anyone else can chime in..