Possibility of Repair of mg2 stator winding

welcome!
wouldn't it be easier to put in a salvage tranny?

 

As a former "motor" (that means electric power) mechanic I have diagnosed and rebuilt many types of failed motors, from tiny fractional HP units to 200 HP pump and fan motors used in massive industrial plants. You could try the spay and bake, but I doubt that it would work. Motors are generally dipped during manufacture, not sprayed. And once a short or open occurs (and you have to know which issue you have), the damage is usually done and it will not be evident. The most likely place for a fault to occur would be at the point the copper winding exits the stator. You could open it up and see if the damage is visible and try to repair it if it is, but chances are it will not be accessible. Just get a new stator, if you can find one. Or swap the whole unit out.

If the fault is related to moisture, maybe it is related to a compromised case, letting water in where none should be. That might throw off the code. I recall reviewing the cooling system on MG2 and I think the unit is sealed from moisture and the cooling occurs via a flow-through heat exchanger. If the unit has a winding to winding short, I would suspect very high temperatures. A winding to ground short would probably result in a fire. If it is moisture ingress, you might be able to dry it out and save it by sealing the damaged area.

At any rate, that stator would bring a nice price at a recycling yard.

 

I think he wants to experiment?

 

The coil field is extremely dense. It’s pretty impossible to repair. The wires are very stiff and wound and impossible to deal with. The area will be scorched if it’s a blowout or if there’s an open would be impssible
To find or get too in the coil field.
Moisture would not throw a ground fault. The stator is very sealed.

There was another poster who had the same code and like you was able to drive around for few days
Without incurring that code like the fault was intermittent. Can u pull the bad trans aprt and look at the mg coil?

I refer you to the Weber School videos on YouTube that do a very detailed teardown of the G2/G3
Transaxles.

 

One thing for sure is that if a motor shop had a stator with a suspected fault it would just burn it off and rewind it. I know the coils for these motors are machine wound and inserted into the stator slots. It is possible that it would be impossible to rewind it without the original machine. Don't let the motor shop guy drink from your pool of ignorance on the burn down. Those open flame ovens are huge, and they burn off 10s of stators at a time. Divide by 20 or 30 and that is the price to burn yours. That guy probably was thinking there was a fresh bottle of scotch in the deal for him if he could rope you in.

After thinking about it, maybe the fault is being thrown from some other component hooked to the windings that is stimulating the fault code. I don't know how the code is being detected, but would be interested to know.

 

I don't know which search engine(s) most of yall use, the one I use gave at least 5 or 6 links to this query.
prius high voltage insulation leakage with subcodes 526 and 613

and the first one I thought looled interesting brought up this page and this lovely page blocker
LOL
funny thing is I haven't enabled an ad-blocker, so it must not like one of my other firefox customized settings for getting rid of coolies
but I'm not gonna spend ANY time tryin to figure out which one....
And the link to the page underneath that message
2004-2008 Toyota Prius with code P3009 or P0AA6 and info code 526, 613, 614 | TOYO Headquarters
I can see some of the content underneath the " ad-blocker on " notification blocker thingy - and it looks informative
so I'll offer it up for any interested.

Just my thoughts since I don't have any real world experience with the OP's particular scenario, hell I haven't even gotten up to the OP to fully read through it yet.
I imagine you're going to need a mongoose/MVCI and techstream after reassembling anyway. So's why not get what you think you might need before hand and take a look at what a dealers shop sees when they get in the High Voltage Isolation code(s), unless your following someone that's done the grunt work already and take your chances that yours is at least close to what theirs turned out to be..
As another member posted in another High Voltage Isolation thread last week - it can be fun and games to trace they out - because once the juice starts dripping out of the system the low voltage side of the system tends to misbehave as well. P00AA6 trying to figure it out | PriusChat

edit: rain and wet snow have not so interesting an effect of the hybrid system.
You mentioned the 09 donner but not the year/model of either your donner or project.
Faults come and go but the ECU keeps track of them and freeze data till you clear all,
then you get new codes and new freeze data and so on and so forth...

2 me, it sounds a lot like traction pack "wack a mole" ( pun about a mole notwithstanding) syndrome
on the high voltage side in the front of the car.

 

Besides the diagrams (partially hidden by that popup ) in red text there is a link to an article by the owner of Luscious Garage in San Francisco,
Since I can't easily click on the link I did some looking around and found a few things in her Knowledge Base
Gen 2 Prius (2004-2009) Transmission Failure, P0AA6, P0A92, P0A7A - Luscious Garage | Hybrid Specialists
with a link to a gen 1 video and a related blog in the first sentence

 

You went from baking it to epoxy coatings to baking it again to now you can get it rewound.

Great! Go get it rewound. You'll be the first.

 

Wth are you talking about?

I got huge open flames ovens and 20 by 30 and fresh scotch. Its a bad transaxle loony tunes theirs 40 of them on ebay for $300 delivered.
Probably cheaper locally for the other nut job.

 

You may want to install something like VLC media player on your machine (Free, or Donate if you like).

Has nearly every codec one might need: Official download of VLC media player, the best Open Source player - VideoLAN