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Is the Alternator shaft squeal just a nuisance, or is it damaging anything?

I wonder if BRP is simply going back to the original parts that did not have this problem. Seems like the easiest, tried and true solution.
From what we can read in the bulletin, they are not changing the whole shaft but rather changing the “alternator shaft friction washers”
 
OK, so here's an update after the TST was performed on my Spyder

Short story : The fix didn't work on my 2024 S2S ☹️

Long story : Got it back from the dealer on Friday (April 17) after they changed the "Friction washers" and I had the chance to talk with the mechanic and I was shown the used pieces - they were worn out !! (the 2 parts identified as #7 in the drawing in post #7 of this thread),

Anyway, brought it back home, got to start it twice on the Friday and all was good. The next day, it started without the noise and drove it for about 90 miles (150 km) and after lunch, the noise came back upon starting, just a little bit for 2-3 seconds. Stopped for gaz a few moments later, and when I started it back, the noise was there in full blown energy like before... after only about 5 starts and 90 miles!! Now every time I start it, especially when hot, it's whining again just like before the fix!

Stopped by the dealer today (Wednesday April 22) and let them know, they will reach out to BRP to see what can be done from there.
 
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OK, so here's an update after the TST was performed on my Spyder

Short story : The fix didn't work on my 2024 S2S ☹️

Long story : Got it back from the dealer on Friday (April 17) after they changed the "Friction washers" and I had the chance to talk with the mechanic and I was shown the used pieces - they were worn out !! (the 2 parts identified as #7 in the drawing in post #7 of this thread),

Anyway, brought it back home, got to start it twice on the Friday and all was good. The next day, it started without the noise and drove it for about 90 miles (150 km) and after lunch, the noise came back upon starting, just a little bit for 2-3 seconds. Stopped for gaz a few moments later, and when I started it back, the noise was there in full blown energy like before... after only about 5 starts and 90 miles!! Now every time I start it, especially when hot, it's whining again just like before the fix!

Stopped by the dealer today (Wednesday April 22) and let them know, they will reach out to BRP to see what can be done from there.
So after a few exchanges between the dealer and the BRP engineering team, and some BRP investigations into the internal data from the Spyder, they have ordered the dealer to go ahead with a whole "alternator shaft assembly" replacement which will be performed next week. Looks like I have the only Spyder which has had the TST performed on it that is still making the noise... Will keep you posted.
 
After the washers are replaced, I wonder how long before the squeal comes back?
In my case it was the next day it came out of repair with 5 engine starts and a long drive which at the lunch pause after 90 miles the squeal came back in full blown ☹️
 
So after a few exchanges between the dealer and the BRP engineering team, and some BRP investigations into the internal data from the Spyder, they have ordered the dealer to go ahead with a whole "alternator shaft assembly" replacement which will be performed next week. Looks like I have the only Spyder which has had the TST performed on it that is still making the noise... Will keep you posted.
I can assure you that yours is not the only update 'Fail'. I am hoping for the best, but I have to say I am skeptical that a shaft replacement will improve things. I am happy that BRP is going the distance with assistance in the matter. And with the rest of our Spyderlovers community, appreciate your detailed updates.

I assume that they have load tested the battery and found it in good condition.
 
I can assure you that yours is not the only update 'Fail'. I am hoping for the best, but I have to say I am skeptical that a shaft replacement will improve things. I am happy that BRP is going the distance with assistance in the matter. And with the rest of our Spyderlovers community, appreciate your detailed updates.

I assume that they have load tested the battery and found it in good condition.
Correct, I was in the dealer 2 times for different testings with and without load and data extracted from BUDS system that was sent out to the BRP team. The battery is a new one since last summer (not the cheap OEM one from Haijiu with only 300 CCA that I was provided with). The first shaft assembly (original part) lasted 10 000 miles and it took 9 months to get a fix that lasted 24 hours and 90 miles on mine. At this point, I'm willing to try anything to fix it !! On a positive note, I am glad how serious they are about finding a solution and how I am being taken in charge both locally by my dealer (Lapointe Sports) and the BRP HQ support team.
 
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