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#295864 - 02/17/08 06:17 PM Mystery Washer  
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Flyer5 Offline
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Montrose PA
At the end of last season my trans developed a slight knock in neutral(or I should say a little more than normal ). I found a piece of washer when servicing the fluid .
Well I am finally getting around to pulling it apart . I found the rest of the washer along side the output shaft and shift drum . I cannot find where it may go I have been looking through the repair manual breakdowns no luck . It is a 2000RT . If anyone can help me with this I would sure appreciate it . I will attach some pics . Thanks, Dave http://bmwsporttouring.com/files/996533-bmwtrans2008.JPG

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Last edited by Flyer5; 02/17/08 06:18 PM.
#295865 - 02/17/08 06:22 PM Re: Mystery Washer [Re: Flyer5]  
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smiller Offline
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Asheville, NC
Kind of blurry, but that looks like what's left of the wave washer that installs on the input shaft, and your symptom of hearing a little more noise in neutral would back up that theory as that would be the chief result of a missing wave washer. Personally I would leave it out and replace it with a 3mm flat washer (there is already one of these on the shaft so there is a ready part number that you can use) as the wave washer can cause all sorts of mayhem (scroll down to my long post at the bottom of the page... it explains what the wave washer does and the problem it can cause.) The only downside to eliminating the wave washer will be a little more (harmless) noise in neutral (but not nearly as much as you're probably hearing now with no washer at all.)

And when you have the input shaft apart, inspect the rear bearing very carefully for any damage as noted in the above thread. If caught early it's an inexpensive repair.

#295866 - 02/17/08 06:34 PM Re: Mystery Washer [Re: Flyer5]  
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Ken H. Offline
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As Seth says, the wavy washer idea, as a way to quiet the tranny, proved to be a poor idea. BMW dropped it later.


Ken & Donna H.
Doctor I need to learn how to relax faster.

If you want to ride tomorrow, ride quietly today.
Quiet is cool, silent is sexy.
#295867 - 02/17/08 06:58 PM Re: Mystery Washer [Re: smiller]  
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Flyer5 Offline
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Montrose PA
Quote:

Kind of blurry, but that looks like what's left of the wave washer that installs on the input shaft, and your symptom of hearing a little more noise in neutral would back up that theory as that would be the chief result of a missing wave washer. Personally I would leave it out and replace it with a 3mm flat washer (there is already one of these on the shaft so there is a ready part number that you can use) as the wave washer can cause all sorts of mayhem (scroll down to my long post at the bottom of the page... it explains what the wave washer does and the problem it can cause.) The only downside to eliminating the wave washer will be a little more (harmless) noise in neutral (but not nearly as much as you're probably hearing now with no washer at all.)

And when you have the input shaft apart, inspect the rear bearing very carefully for any damage as noted in the above thread. If caught early it's an inexpensive repair.



Thats what it is .I also have the rear gear bearing problem as well so a few parts I should be good for another 100k . Thanks ,Dave


Current rides 2000R1100RT Black
Quicksilver MXL Sport 2 Light sport aircraft
#295868 - 02/17/08 07:07 PM Re: Mystery Washer [Re: Flyer5]  
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smiller Offline
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Quote:

I also have the rear gear bearing problem as well so a few parts I should be good for another 100k


Yeah, I expected you would, good news that you caught it early. A really poor design but easily rectified if you omit the wave washer and use a spacer instead, in which case the transmission should then outlast the rest of the bike. BTW I'd replace all of the seals while you're in there.

#295869 - 02/17/08 07:21 PM Re: Mystery Washer [Re: smiller]  
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Flyer5 Offline
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Montrose PA
Quote:

Quote:

I also have the rear gear bearing problem as well so a few parts I should be good for another 100k


Yeah, I expected you would, good news that you caught it early. A really poor design but easily rectified if you omit the wave washer and use a spacer instead, in which case the transmission should then outlast the rest of the bike. BTW I'd replace all of the seals while you're in there.




I plan on doing just that as well as rear main seal on the engine .Another question My clutch plate measures 5.05mm ,I know min is 4.5 . How thick is a new plate ? Thanks again ,Dave


Current rides 2000R1100RT Black
Quicksilver MXL Sport 2 Light sport aircraft
#295870 - 02/17/08 08:02 PM Re: Mystery Washer [Re: Flyer5]  
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Flyer5 Offline
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Montrose PA
Quote:

Quote:

Quote:

I also have the rear gear bearing problem as well so a few parts I should be good for another 100k


Yeah, I expected you would, good news that you caught it early. A really poor design but easily rectified if you omit the wave washer and use a spacer instead, in which case the transmission should then outlast the rest of the bike. BTW I'd replace all of the seals while you're in there.




I plan on doing just that as well as rear main seal on the engine .Another question My clutch plate measures 5.05mm ,I know min is 4.5 . How thick is a new plate ? Thanks again ,Dave





Never mind I answered my own question . I went down and checked the splines and there shot also . So new input shaft and clutch plate as well. Dave


Current rides 2000R1100RT Black
Quicksilver MXL Sport 2 Light sport aircraft
#295871 - 02/17/08 09:00 PM Re: Mystery Washer [Re: Flyer5]  
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Joe Frickin' Friday Offline
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IIRC, Eebie found something similar when draining his gearbox a few years back. Don't recall if it was a critical part or not; if he doesn't see this thread soon, you may want to PM him...

#295872 - 02/17/08 09:17 PM Re: Mystery Washer [Re: Flyer5]  
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smiller Offline
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Quote:

I went down and checked the splines and there shot also. So new input shaft and clutch plate as well.


Ouch... because I don't think that you can buy just the input shaft itself for the M97 transmission, rather you have to buy the entire input shaft assembly, not cheap.

#295873 - 02/18/08 12:01 AM Re: Mystery Washer [Re: smiller]  
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Flyer5 Offline
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Flyer5  Offline
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Montrose PA
Quote:

Quote:

I went down and checked the splines and there shot also. So new input shaft and clutch plate as well.


Ouch... because I don't think that you can buy just the input shaft itself for the M97 transmission, rather you have to buy the entire input shaft assembly, not cheap.




I found a used Trans the shaft and plate are good dont know about the bearings yet ,but they are cheap Compared to everything else . Dave

Last edited by Flyer5; 02/18/08 12:02 AM.

Current rides 2000R1100RT Black
Quicksilver MXL Sport 2 Light sport aircraft
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