Helical cut gears in the latest diff ??

Gregg C · 02-02-2012, 07:21 AM

BRP must have done something, physical change to parts or set-up or both, like I said that 2012 yesterday was nice and quiet.

bassbell · 02-22-2012, 10:55 AM

I took mine into the dealer yesterday and talked to them. They are working with the manufacturer to replace my diff with 506 from the 2012. Mine would start whining above 35 mph. The dealer said that the problem with rear diff is that the pinion bearing were made in China. The bearing were not all the same thickness. The assembler of the diffs assembled them with the same shims. Some bearings were to thin, which would cause the gears to have a small contact area, which would cause the whining of the gears. The manufacturer has since started checking the contact pattern of the gears which is why the 506 diffs on the 2012 models are not making the whining noise.

KARISTEP · 02-22-2012, 12:14 PM

My september 2012 model with 506 make noise above 35mph too. I will check it with dealer at this end of week.

klode · 02-22-2012, 12:35 PM

My diffs are pretty loud..it sounds like a jet. Dealers says its the clutches??? WTF? I've never herd any kind of clutch sound like that. When i took it in a few weeks ago for the 10hr service; they found that the front diff was low on oil and had alot of shavings in it (they said that this was normal for break-in-period; ??).

Oh yeah, they also found a low coolant level as well....and the next morning, i found a tinny puddle of anti-freeze below the front end of the bike.
No issues so far but Im glad i got the 2yr warranty!!

ostacruiser · 02-22-2012, 08:26 PM

I don't know what's going on with the diffs, but I know on my 2010 Outlander I chipped a couple teeth in the rear diff and they replaced it with the HD Commander unit, it has an extra mounting location. And.....there was no change in noise, still as quiet as it was with the old diff. I checked and there was no tag on top like there is on my '12 Commander. My Commander is fairly loud, you have to yell to talk at any speeds over about 15mph, hopefully BRP gets this figured out....lol

02-02-2012, 07:21 AM	#11
Gregg C [OP] Senior Member Join Date: May 2011 Location: Albuquerque Member #2436 Posts: 317 ()	BRP must have done something, physical change to parts or set-up or both, like I said that 2012 yesterday was nice and quiet. __________________ Gregg 2011 Commander "X" BRP Top Viper Winch Synthetic Rope K & N Air Filter MrRPM Spin On Filter Garmin 650T Digital Gauge PKG. Kolpin Windshields CVT Blower ///AIRDAM Clutch Factory UTV Spacers Whips/Flags

02-22-2012, 12:35 PM	#14
klode Senior Member Join Date: Dec 2011 Location: Ontario Member #4034 Posts: 111 ()	My diffs are pretty loud..it sounds like a jet. Dealers says its the clutches??? WTF? I've never herd any kind of clutch sound like that. When i took it in a few weeks ago for the 10hr service; they found that the front diff was low on oil and had alot of shavings in it (they said that this was normal for break-in-period; ??). Oh yeah, they also found a low coolant level as well....and the next morning, i found a tinny puddle of anti-freeze below the front end of the bike. No issues so far but Im glad i got the 2yr warranty!! __________________ -2012 Commander Limited "pure magneseum" -14in ITP rims (ss212) -27in mud lites XTR -2007 Renegade 800 SOLD

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Helical cut gears in the latest diff ??

can am commander 506 rear differential

forged gears dirty

commander viper winch

02-22-2012, 10:55 AM	#12
bassbell Junior Member Join Date: Mar 2011 Location: Utah Member #2062 Posts: 12 ()	I took mine into the dealer yesterday and talked to them. They are working with the manufacturer to replace my diff with 506 from the 2012. Mine would start whining above 35 mph. The dealer said that the problem with rear diff is that the pinion bearing were made in China. The bearing were not all the same thickness. The assembler of the diffs assembled them with the same shims. Some bearings were to thin, which would cause the gears to have a small contact area, which would cause the whining of the gears. The manufacturer has since started checking the contact pattern of the gears which is why the 506 diffs on the 2012 models are not making the whining noise.

02-22-2012, 12:14 PM	#13
KARISTEP Senior Member Join Date: Aug 2011 Location: France Member #3118 Posts: 306 ()	My september 2012 model with 506 make noise above 35mph too. I will check it with dealer at this end of week.

02-22-2012, 08:26 PM	#15
ostacruiser Senior Member Join Date: Mar 2011 Member #1993 Posts: 122 ()	I don't know what's going on with the diffs, but I know on my 2010 Outlander I chipped a couple teeth in the rear diff and they replaced it with the HD Commander unit, it has an extra mounting location. And.....there was no change in noise, still as quiet as it was with the old diff. I checked and there was no tag on top like there is on my '12 Commander. My Commander is fairly loud, you have to yell to talk at any speeds over about 15mph, hopefully BRP gets this figured out....lol

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