Homlonz

I've been a lover of the original mustang since I was a kid & my dream finally came true in getting one. I got one manufactured May 9, 1964. It's at 260 V-8 mostly original with the three speed.
I was cleaning my heat system recently and as I was working on cleaning all the parts I took out the blower motor. I had to tap on it to get the fins disassembled from the blower motor itself and I think in doing that I might've done something to ruin the blower motor. Is there anyway to test that? I'm not sure why tapping well it would've rounded but it seems like it's got that shaft kind of locked up now