The worst condition royal you’ve ever seen.

[madman]

The armature fan might be pressed on. As for getting the main fan off, heat is probably the best option. They do have lefthand threads, right? I'd say put an impact gun on it, as that would probably very easily jar it loose. But how you'd grab it is another question.

 

[lesinutah]

Lmao

No.
I'd say heat it up but with chemicals around it will ignite.
Here is a few possible solutions. You get access to armature. You can still a small hole in it. You then use ice pick or Allen wrench in hole while you twist it off.
You hold vacuum impellor up. Get a rubber mallet and whack it once or twice.
If you know where the bearing plate screws are drill those out. You could then pull armature out with the fan.
There is one more thing. If the impellor is seperate from the fan, hold the fan spin the impellor off.
I'd spray WD 40 let it sit spray it down with water cleaning some gunk off. Coca cola is something that says away stuff.
If you rip apart the fan the fan will cost you more than you can get outta the vacuum.
Les
I feel like my answers were all like commercial for all state the methods of mayhem guy.