I just managed to find the worn bearing fans that I pulled out of my 5245 counters. They are the Spartan type SL fan which is a fan designed for reliable military applications. The series number is 867YS and it is a split phase capacitor run fan which has 3 leads, one for the capacitor for the split phase winding and two for the normal AC connection.
Data sheet:
The fan speed is rated at 2250 rpm for 50/60 Hz operation and 1550 for 400 Hz operation.
Since it was a factory modification for this particular product to meet military specs the fan and capacitor is a factory installed item. If it is working and the capacitor looks OK I would leave it alone. Otherwise spend the time and possible $$$ to replace a working fan for 120 volt operation only. The power supply eletrolytic capacitors will fail far before any oil filled capacitor.
Greg
