5 replies [Last post]
jchen
jchen's picture
 Offline
Joined: 07/07/2015
Posts: 17

My 75/5 is in the shop at the local BMW motorcycle dealer because I thought it was a clutch cable problem (the clutch suddenly had no resistance when you depressed the lever). The clutch did have recoil, though, and they are telling me it is a transmission cover problem for which the covers are no longer made. They are trying to source a replacement on ebay and the like, and if not that it may require welding? Does anyone know (a) where I might find a replacement and/or (Cool if the welding option is the way to go?

schrader7032
schrader7032's picture
 Offline
VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6622
Check with Mikey at Airhead

Check with Mikey at Airhead Salvage.

They're "telling" you that it's the cover. Have you seen the issue and can verify that something is wrong with the cover?

__________________

Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

jchen
jchen's picture
 Offline
Joined: 07/07/2015
Posts: 17
I haven't, although I have to

I haven't, although I have to say I wouldn't know it if I saw it. Thanks for the link, I'll check it out!

mark_weiss
mark_weiss's picture
 Offline
Arizona
Joined: 11/17/2013
Posts: 173
The most likely problem is

The most likely problem is that one of the 'ears' that supports the clutch release arm pivot pin has broken.
Contact Dave at Quality Cycles (Mesa Arizona), 480-964-4800. There are may be some /5 covers floating around the shop.

__________________

Mark
qualitycycleservice.com

mark_weiss
mark_weiss's picture
 Offline
Arizona
Joined: 11/17/2013
Posts: 173
One more thing. Replacing the

One more thing. Replacing the rear cover will almost undoubtably require re-shimming the transmission. It IS possible that two covers could have been machined exactly the same, but not likely. It is not a hugely difficult process, re-shimming just requires time, patience, and the right measuring tools.

__________________

Mark
qualitycycleservice.com

khittner
khittner's picture
 Offline
VBMWMO #8223
Joined: 02/15/2012
Posts: 371
Having watched just this bit

Having watched just this bit of surgery for the first time last weekend at an Airhead tech day in Crown Point, Indiana, Mark is being a bit modest/understated. An assortment of appropriate shims, knowledge of the compression allowance for the rear cover gasket, a heating device for warming the cover before quickly, accurate fitment of the cover to the assembled gear shafts, bearings, and stacked shims, and the tools and workspace to make reassembly possible, are all necessary, as well. It's a task best left to skilled and experienced labor, IMHO.

__________________

Konrad

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.