The Fan hub walks about a 1/4 from front to back...is this right? The hub turns smooth and true.
No Water pump.
No! There should be no travel. Sounds like it needs new bushings. They are easy to install. Jim Patrick
The felt seal/washer limits the front to back movement. Maybe it is missing or worn away.
Here is a drawing of the cross section of a 1926-27 fan assembly. I don't know how it compares with a '21 fan assembly, but it might help if the pulley section is the same, back to the outlet mount. Jim Patrick
Thanks guys. I remember seeing new bushings in a box of stuff that came from a Auction last spring.