They had to make a custom puller, to pull the rotor straight up and out of the stator housing. The neo-dymium boron-oxide magnets are very sensitive to heat, and impacts. Brittle stuff. And very powerful, don't get pinched, would be a real bad day...

The puller was just some flat plate, with holes on the periphery to bolt to the rotor, and a hole in the center for an eye-bolt. Just iron mongery. Have torch, will travel, no problem. They bolted the stator down to secure it, then lifted the rotor straight up with the shop crane. Make sure a keeper of some sort is put on the magnets. They used some banding iron.....

You can't test the rewind on 60 cycles!
You can't even test it on a VVVF drive! (according to the motor shop)

It operates like a big stepping motor. If I understand it right, the V3F25 drive uses the resolver angular input to determine the degree of rotation of the rotor, and it energizes the 3-phase windings accordingly. It applies like more of a "pulse", rather than a sine wave. Even the negative side is sort of a minus DC pulse, and not a curve. Well, I dont have this on "good authority", it's someones' opinion. I don't know as much about motors as this guy, so I'm inclined to believe him. If I have more time, I'll study the motor waveform with the o'scope.

So before we re-installed it, we tested it right in the bed of the truck on inspection speed, with 3 phase extension cables, resolver cable, and we had to jump out a bunch of stuff on the control. It ran on inspection speed, so we felt confident to rig it back into place.