Darn! Have you heated it and put some sort of penetrating oil? I heated, sprayed, heated more, then more oil, then tightened the puller and let it sit overnight. It came off after tapping and more heat. It is flooded with penetrating oil. Unfortunately I don't have a torch. The eye bolts are now ti...

Maybe this aluminium is too soft, I tried with thicker thread eye bolts that were really tight when inserted. The bolt came off at once breaking the thread after a while. I don't know if it is worth to cut new threads to try with larger bolts...

Not sure how much of this is any use now but I'll put it out there anyway. When I did my siren I used two lifting grade eye bolts and removed the lower arms of the puller. I put the eye between the upper arms on each side and placed the bolt through the hole in the eye. I also drilled the shaft key...

The first attempt to pull out the rotor was sort of disastrous! I had a (bad) idea to fasten washers so the two legged puller would grip. You can see below the result... The inner threads were broken and the screws came out. I'm afraid that with the steering wheel puller I would have the same result...

stormsetter4 wrote:Steering wheel puller works best for that, use grade 8 bolts and penetrating oil to get it loose.

Thanks. I'll try to find one, they seem to be pretty expensive. What about the shaft key? Do I need to remove it before pulling the rotor, or will it follow?

I wonder if it would be possible (or practical) to find a machine shop that can make a new motor shaft and just move the old armature and rotor over to the new shaft? Edit: Looking back at your last photo it appears the motor has separated a bit from the base plate. It may be prudent to take the mo...

Dang, that thing really got beat up. It has fallen from the third floor! I wonder if the shaft can be straighten out. Probably not, it would probably just snap. Even if you did the shaft would still be slightly of center and weakened, and imbalance with that rotor spinning that fast is extremely da...

stormsetter4 wrote:Dang, that thing really got beat up.

It has fallen from the third floor! I wonder if the shaft can be straighten out.

The bolts were cut with a hacksaw. The motor and rotor made it home as well, and the siren is waiting to be restored!

Why don't you weld another nut to the corroded one to get more purchase on it? That could work if the parts were in a garage and had access to a welder. But they're still outdoors and surrounded by bushes... Plus high temperature, branches, mosquitoes... the conditions are really bad. I'll try with...