1964 Chevy heater question

I bought a new heater motor for my truck and now I cannot figure out how to separate the motor fan from the old motor,

any suggestions????

Thanks,

Gary
Texas

 

Chevy duty does carry a replacement wheel or you can try alternating heat and penetrating oil on the shaft, but be carefull the oil will flare up when heated.I just replaced mine and had to go new since my old one was slightly bent.:7

 

thank you