Cleveland Tramrail Motorized Gantry Crane End Truck Drive Floor Track -Bad Motor

Motorized Gantry Crane End Truck Drive.  
3/4hp 460V motor.  -Motor runs but sounds like it has a bad bearing.
100 FPM drive speed.
Fits a 2-2.5" rail width.
8" W x 12"H x 16' 3" overall length.
Fits 14"x 10-1/2" or 12"x 14" gantry leg post base.  11' 6" and 7' leg spacing.
Track wheel:  2-3/4" inside wheel width.