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Discussion Starter · #1 ·
I found out today there is a service bulletin for the "clunk", on "certain" models, vin numbers. Mine wasn't one, yet, I still have the symptons. Before you go tearing your stuff up, check with your dealer. New spring and helix is what they say is the the fix. FYI. My dealer said they would fix anyway.
 

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Does anyone know which vin.#'s are effected ? Mine is #450 and it deffinately has the clunk. I called my dealer and he says he has not heard of this bulletin, does anyone know the bulletin number ?
Thanks
Kris
 

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Thanks for posting this up George.

I was looking to see if there was an online tool that you could use to locate service bulletins, however, it appears only recalls can be found this way.

For service bulletins, Can-Am sends the bulletin to the dealers, they are responsible for letting those with the VINS affected know that a bulletin is out. In the case of a recall, Can-Am would send a letter to the vehicle owner to inform them.



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Discussion Starter · #5 ·
the numbers only went to 188 and for the X's was only 13 and 14. Mine is 676, but my dealer said she would make a call since it seems to fit the criteria. Anything built after Sept. is supposed to have the changes, i.e spring and helix. I haven't heard anything back.
 

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I'm #399 and have the clunk bad. Its my only complaint so far. When somebody gets the TSB done they need to report back if it's actually gone or not.
 

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Another thing that may come to light here is the helix is designed as a wear item....it is designed to wear out quicker than the aluminum sheave half that it engages....helix is ~$50.00, sheave is ....a whole bunch more.....

Like all brand new machined parts, they need to wear in with whatever they mate with (don"t laugh!) and these helixes are very durable....it is my assumption that as the hundreds and hundreds of miles get piled onto our machines, this helix may become one with it's partner, the sheave half........

When I put my 650 helix in place of the 800, I filed the 3 tips to round them off a bit....when the helix is parked at an idle, the very tips dang near comes completely out of the movable sheave half......so as RPM is brought up to engage the belt, the tips may not be smoothly sliding on the sheave ramps, they may be binding, then freeing up and making that clunk instead of smoothly riding on the sheave ramps to make a quieter engagement.......time may support or dispell this idea, but at least it's an idea to kick around...:).....hard to explain without a show-and-tell session, but maybe Adam can make sense of this poor explanation and chime in??.....Lance
 

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clunk

Thanks Lance just called my dealer about the clunk and a call back on them and he said there was no callback on my vin.Do have a problem with a MAINTINANCE REQUIRED callout on the monitor though after i changed oil and cleared the maintinance soon code.Seems the oil light came on and u have to have that code cleared by brp
 

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Clunk

Got my X the 3rd of November. Just talked to dealer today. The complaint number on the clunk is 2011-0001. Parts as follows: Part number 420238615 drive pully spring one each, drive pully ramps part number 420248496 1 pack of 6. On order will keep you informed when put in.
 

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Are you in the Vin# range or are they doing it for you anyway. They give you an idea when the parts will be in? Also, did you have to leave the Commander there, or will they let you keep it until the parts arrive?
 

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This was released before the Commander even came out. I wonder why the part numbers you listed are already listed here. They should be different if it was a new TSB.



# Part # Description Qty Add to Pick List
1 420611407 CVT Air Guide Kit. Includes 1 to 7 1
2 420430408 O-Ring 1
3 420631088 O-Ring 1
4 420441311 Hex.Screw M6 X 20 8
5 224061121 Flat Washer 1
6 232561414 Elastic Stop Nut M6 1
7 420430124 Gasket 1
8 420280517 Governor Cup Ass'y. Includes 8 to 12 1
9 420281293 Slider Shoe Set 1
10 420233893 Roller Sleeve 6
11 420229997 Roller 1
12 420626231 Thrust Washer 12
13 420280465 Outher Haft 1
14a 420248496 Centrifugal Lever Kit. Includes 14a to 17 6
14b XXX Lever 6
15 XXX Thrust Washer 12
16 XXX Screw 6
17 XXX Lock Nut M5 6
18 420238615 Compression Spring, Drive Pulley 1
19 420627577 Spring Seat 1
20 420257195 Drive Pulley Clutch 1
21 420632377 Ball Bearing 2
22 420245951 Retaining Ring 1
23 420280374 Inner Half 1
24 420239134 Spring 2
25 420229577 Spring Sleeve 2
26 420627920 Thrust Washer 1
27 420627765 Spring Washer 1
28 420641855 Hex. Screw M12 X 135 1
29 420280470 Cam 1
30 420220913 Driven Pulley Shaft 1
31 420238176 Compression Spring 1
32 420280236 Inner Half Ass'y 1
33 420280178 Outer Half Pulley Ass'y. Includes 33 to 36 1
34 420932421 Ball Bearing 1
35 420245910 Retaining Ring 1
36 420660124 Torque Gear 1
37 715000302 V-Belt 1
38 420627591 Thrust Washer 1
39 420441480 Hex. Screw M10 X 110 1
40 420245920 Tab Washer 1
41 420611393 Variator Cover 1
42 420440560 Torx Screw M6 X 30.5 7
43 420975050 Heat Protection Mat 1
B 293800060 Loctite 243, 10 ml 1
W 293550021 Isoflex Grease, TOPAS NB52, 50 g 1
 

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well as you guys may know, i have never had a commander in my hands, i mainly work on ATVs, and since the commanders are so new, and there is not a dealer within 100 miles of me, it is a rare occurence to see a commander in my parts. i have yet to get one in my hands, to study up on this clunk. i would only assume that it IS the helix hitting the movable sheave as you shift gears and the movable sheave goes from rest at idle, to spinning when you shift into gear and the sheaves rotate and hit the helix which is a fixed part on the shaft. again like was said above, it is hard to explain it without a show-an-tell video. i am supposed to be installing 2 clutches on commanders next week for a very well endowed owner ha. and i plan on doing a video tutorial on the clutches on one of the commanders and side-by-side comparisons of the before and after. along with trying to figure out what the clunk is, and maybe a video on how to remedy it if i can figure it all out.
 

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Take a good look at it when you get one in your hands. I don't think the clunk comes from the helex though. I hope so because that would be an easy fix. I think it's comming from the sub transmission. Either way, if you come up with a fix, you will be getting a lot of business your way. I think every Commander owner out there would be buying a product that would fix the clunk. I am also very interested in your CvTech clutch. I'm just waiting for some reviews and video's to come out before I drop coin on it. If you came up with a fix for the clunk, and sold it as a package with the clutch, I will definetly be all over it.
 

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Clunk

They said that I was not in the vin# range. Should have the parts in a week. I still have it. They are going to do it when I get the break in service done. Just put winch, bumpers and wind shield on it. I told them that I wasn't spending that much money on something and having problems with it so we will see.
 

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I still believe that it is the helix ramping into the movable sheave....the extreme tips of the helix have not become one with the 3 ramps of that sheave yet......if I have time with my exaust project I'm on now before turkey day, I will pull the helix and round the very tips of the helix and report back my success and "told ya so".....lol....pretty confident that noise will get less and less as you pile on the miles......Lance
 

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I still believe that it is the helix ramping into the movable sheave....the extreme tips of the helix have not become one with the 3 ramps of that sheave yet......if I have time with my exaust project I'm on now before turkey day, I will pull the helix and round the very tips of the helix and report back my success and "told ya so".....lol....pretty confident that noise will get less and less as you pile on the miles......Lance
You know Lance, You may be on to something there. I was out riding today and thought to myself "wow, the clunk seems to be getting better". I have almost 300 miles on mine now, so maybe it is the helix. Hopefully it will go completely away within the next 300 miles. Kinda funny though when you think about it; usually things get worse when you wear something out, not better.
 

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Hey Jordan!...Wassup?....I vote for all concerned about that clunk to refer back to "Hillbillys 12 beer method"......after the 9th beer, who gives a rip how loud it is.....lol....Lance
 

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Hey Jordan!...Wassup?....I vote for all concerned about that clunk to refer back to "Hillbillys 12 beer method"......after the 9th beer, who gives a rip how loud it is.....lol....Lance
:rofl:HaHa, now thats what I'm talkin about! The "CLUNK" sure is anoying though.
 
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