Hi, I have been given a Southern Pacific GS4 4-8-4 standard steam loco`(non runner) to repair ready for our sales day here at the Ipswich Railway Modellers Association in  Ipswich, Suffolk, England.
After servicing the motor and bench testing i found the motor runs very hot to the point of almost melting the white plastic casing motor body.
Does anyone know where I can obtain a replacement  motor please.
It`s a beautiful loco (old?) and would love to see it running again.
Any information will be gratefully received.
Dougal.