1991 Avalon 900 auger issue, need help!!!

I have a 1991 Avalon 900 FS that has started giving me auger jamming problems. I successfully removed the motor and was able to manually unjam the auger by moving it back and forth. The motor was reassembled to the auger after lubricating the inner auger with a penetrating spray oil and being wiped dry. It turned on and worked again just fine for about 12 hours, then jammed again. Do I need a new auger? The motor was checked by direct line to outlet and turns well so I think that is ruled out. Where should I be looking into?

Bioburner, I am not sure if I understand your message. What is a stator-armature?

Thanks DirtyDave for that explanation. Anyone ever buy a new auger motor from the surplus Center site? Seems to be a great price of about $20 for an new auger motor?

DirtyDave said:

here is a different place.
http://www.cshincorporated.com/
you have to know how many rpm and direction of travel ( clockwise or counterclockwise )

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Thanks DirtyDave.