Generator Blower motor

[Lewis and Clark]

Hello, I have 1996 45' #410 Newell. I need some advice, when I start my gen. (20KW), the blower starts and runs, after an hour or less the blower shuts off and remains off for about 10 - 15 minutes. The blower motor is extremely hot to the touch. The squirrel cage is operating fine, smooth and spins freely. The motor the same when I take the belt off. I am assuming the thermal protector is turning the motor off and after it cools to an acceptable level it restarts. I guess if my assumption is correct, then I need to replace the motor. All input is welcome, before I spend $300 plus on a new motor.

Thank you
Nando Garbarino
Ft. Meyers Florida

P.S. This site is a life saver, not to mention a wallet saver, with all the great advice and help I have had so far. Thanks to all again!!!