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i have a 2022 sport max with 300+ miles and i have noticed this vibration sound between 3600-4600 rpm . it only happens in sport mode 2 wheel it does not happen in sport 4 wheel or in eco 2 or 4 wheel. it seems to be a tinny metal springy sound. is this what you are talking about?
NO, while there is an audible sound, this is a "Vibration" which can be felt above 4500. It can be felt in the seat, steering wheel, and floor boards.
 

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i have a 2022 sport max with 300+ miles and i have noticed this vibration sound between 3600-4600 rpm . it only happens in sport mode 2 wheel it does not happen in sport 4 wheel or in eco 2 or 4 wheel. it seems to be a tinny metal springy sound. is this what you are talking about?
That’s how it starts. After your 3rd driveshaft and various other “kitchen sink” parts, Can Am will leave you with slightly muted rattle and obnoxious vibration and call it fixed.
 

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This is a old issue. It started with the x3. The solid carrier bearing from sandcraft and satv fix the problem on the x3. And all can am sxs use the same bearing from the factory. The shaft is to long for one rubber mounted carrier to stop the out of balance lope. You can get the shsft balance but it doesn't stop the chatter cause from the loping.

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We’ve all read your fix for this and it’s great knowledge for those with that particular issue where the shaft is spinning. Unfortunately what Alien, myself and others are experiencing with the vibration has little to do with the shaft. In 2WD it doesn’t spin or “lope”, acting more as a conduit for whatever is actually causing the issue.

It’s much less of an issue in 4WD. Using the Sandcraft bearing may very well help to diminish the noise and vibration, but will not fix it.
 

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We’ve all read your fix for this and it’s great knowledge for those with that particular issue where the shaft is spinning. Unfortunately what Alien, myself and others are experiencing with the vibration has little to do with the shaft. In 2WD it doesn’t spin or “lope”, acting more as a conduit for whatever is actually causing the issue.

It’s much less of an issue in 4WD. Using the Sandcraft bearing may very well help to diminish the noise and vibration, but will not fix it.
If you would have read the entire thread. You would have seen that he posted a video and that I confirmed this wasn't a drive shaft issue. In the case of the video. It's a gearbox issue not shaft. As for the drive shaft not spinning spinning 2wd . The shaft is turning if wheels are turning. But there's no load on the shaft so little to no noise compared to when it's loaded up running in 4wd.

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My front driveshaft spins while rolling in 2wd. It's always connected to the front diff.
My mistake. The video I watched had a 21 Max on a lift with the back tires spinning and the dude holding the shaft to show the vibration. After installing the Sandcraft bearing the noise (presumably vibration) was still there, just not quite as bad. Starts at 7:30 with new bearing.


I assumed the front diff was disengaged in 2WD. Either way it’s not under stress, so why would the Sandcraft bearing be anything more than another band-aid? Honest question as I’m super PO at myself for paying top dollar for French-Canadian “engineered”, South of the Border assembled garbage.
 

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Because Can am / brp doesn't make any of the parts on these machines other than the engine. Everything else is source out to other manufacturers. So till the manufacturer of the box agrees they have a quality control issue it will never be fixed. And if lots like other problems on the past. It will get replaced in a newer model by a different manufacturer that has figured out the issue and can correct it. Not all the the machines have the gearbox noise. That's why I say quality control issue. If they were all bad it would have been updated with different box by now. It sucks I know we fought the shaft issue for 4000 miles only to find the solid carrier was a simple fix. But the noise in the video started out as the shaft but quickly turned into a major issue behind the shaft .

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I saw somewhere (in this thread??) that someone suspected the rear diff may be the culprit, and telegraphing through the other assemblies. Seems that would be easy enough to disconnect the rear diff on a rack and see. With that said, seems like their techs could narrow it down to tranny gear noise. I wonder if they've ever removed the 4wd actuator and gandered at the sliding coupler. Like maybe it's only disengaging 98%? Enough to not turn the front shaft, yet rub it in 2wd?
 

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well i dug into the max yesterday, removed the bash pans front and middle, took a long look and feel of the drive shaft, this is a 2022 with 500 miles. front shaft tight on diff and tight on rear front splines, no noise from that at all. took ahold of the rear shaft no plat up or down in carrier bearing and no up or down in the rear yoke on gear box splines, what idid get was back and forth play that when shoved forward you would get a noise a tinny rattle noise when it hit the carrier bearing. so out came the shaft first the 2 pieces where not synced, it had the green marks but they were of a little more then 90 degrees. i set the rear shaft up in my drill press drilled 2 holes opposite each other ( yoke end onto gearbox spline) and installed set screws, i took the front shaft ,i drilled 2 holes opposite each other ( rear slip yoke on front shaft)
and install 2 grease fittings. after about a hour removing all the revits and drilled them out for the revit nuts i took the max down the road, totally different machine, no noise,rattle no nothing. i used green Loctite on the 2 set screws and grease zerks. waiting for the revit nuts to install the bash pans then i'll put it to the test. i did see where they have a replacement shaft but is on back order till nov. the dealer told me, if its anything like the windshield i had on order for 4 months that i finally cancelled i assume it will be longer so i had to at least do this to see if it would work, how long? i will keep a update .
 

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Hello! A new member here and have a couple of questions for everyone. I have a 2021 Commanader MAX XT. I have drilled and installed the set screws, greased the splines, verified phasing of the shafts, installed a solid mount carrier bearing, and for the most part, this common vibration/rattler is still there. Instead of around 4800 RPMS, its changed to most noticeable around 4200 RPMS. Reading all of the posts, seems that the issue is coming from the transmission/gear box and transfers through the driveshafts. Has anyone tried heavier weight oil? Has anyone tried to fill the inside of the driveshafts with expandable foam to help stop the transfer of noise? Any other thoughts or suggestions woulkd be appreciated.
 

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Hello! A new member here and have a couple of questions for everyone. I have a 2021 Commanader MAX XT. I have drilled and installed the set screws, greased the splines, verified phasing of the shafts, installed a solid mount carrier bearing, and for the most part, this common vibration/rattler is still there. Instead of around 4800 RPMS, its changed to most noticeable around 4200 RPMS. Reading all of the posts, seems that the issue is coming from the transmission/gear box and transfers through the driveshafts. Has anyone tried heavier weight oil? Has anyone tried to fill the inside of the driveshafts with expandable foam to help stop the transfer of noise? Any other thoughts or suggestions woulkd be appreciated.
The gear case already uses 75/140 gear oil. In my opinion, this was an attempt by BRP to quiet the noise down before the machine was released. Additionally, I have the "latest" updated drive shaft from BRP... It is filled with "cardboard"... this is another attempt (by BRP) to quiet the noise. IT HASN"T HELPED !!!
They continue to refuse to address the noise as a "gear box" issue, and claim it's all "prop shaft" noise.... that's funny, because my machine STILL makes the noise/vibration even when the shaft is NOT installed. Yes, you read that correctly... NO FRONT SHAFT INSTALLED... and the noise/vibration still exists!!!
 

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They have 75/140 in all the gearbox and rear diff for as long as I can remember. So that wasn't a attempt to quit it down. Switch to straight 90w. See if it helps.

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Yes 75/140 gearbox and rear diff,
75/90 front diff. So no it wasn't to cover anything up. Now back when the rear diff in the 11-13 commander was noisy everyone was going to redline oil with ws2 added. Some it helped most I don't think it did. If the clearances aren't right or something is out of balance fixing the problem is only way to fix the issue. The fix for the 11-13 rear diff was a complete redesign on 14 model. Then again in 15 then again in 16 which didn't change till they moved engine to rear then integrated the gearbox with the rear diff. And the commander diff isn't new its been around sense 18 when the original maverick got its face-lift. And only difference it they redesigned the mav to have a bed and then the new commander hit the market .

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