Is this normal?

[doratheexplorer]

Had to remove the fan on my Eureka Bravo II in order to replace the bearing/scroll assembly behind it, and while it spins perfectly with the fan off, anytime I out the fan on and tighten it, while it isn't real hard to turn, there is a noticable resistance and it should definitely spin easier than that. I have taken it off and put it back thinking I gotten it too tight but as soon as I tighten it up to the point where the nut can't be loosened by hand, it goes back to being harder to turn.

Am I supposed to just get it slightly past hand tight? This is my first time having to put a fan back on so I can't figure out where I am going wrong. Thanks!

P.S: Brushes are not set to the commutator yet as I had to replace them too and the guide that came with them said to put the fan back on first.

 

[doratheexplorer]

Silly Me!

Forgot the washer that goes on the back of the fan, spins perfectly with fan on now.

 

[lesinutah]

Im

Going to take an educated guess.
When you take the tires off a car and reinstall them. If you notice once the tires are tightened and you try to loosen lug nuts once you need to take the tire off again. The weight of the car and the friction make it seem like the lug nuts are way tighter than you tightened them by alot.
The fan spun tightening it in a similar fashion.