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tonyo
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VBMWMO #7915
Joined: 03/01/2011
Posts: 29

My 1964 R50/2 is stuck in 4th gear. I can shift down, but not into 3rd. There was no warning: I just suddenly couldn't shift. Cable adjustment is Ok. One possible clue was that I had a little difficulty going from neutral into first after starting the bike at the beginning of the ride. This is a new bike to me, restored, with low mileage and no reason to suspect any transmission issue. I do not have the knowledge or mechanical experience to address this on my own. Suggestions?

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TonyO

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6866
Something like this is more

Something like this is more common to the bikes from the early 1970s. Snowbum talks about it on this page:

http://bmwmotorcycletech.info/emergency-shifting-tool.htm

I don't think that's your issue, but something could have become dislodged and is preventing proper movement of the gears. I'd drain the fluid and see if there's anything unusual on the drain plug. The transmission might have to come out. You could then try putting the transmission in unusual positions and see if it shifts again. Beyond that, maybe the box has to come apart.

Also be sure there's no slop in the foot shift lever.

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

Beemer100
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Germany
Joined: 05/15/2018
Posts: 82
I'd agree with Kurt, check

I'd agree with Kurt, check first if the foot lever can move all the way without touching the frame or anything else. Sometimes the pin (which holds the lever in place) is wrongly assembled and thats way there is not enough clearance.

good luck
Klaus

wa1nca
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VBMWMO #8374
Ashfield Ma.
Joined: 09/27/2012
Posts: 577
Shift lever pin

Beemer100 wrote:

I'd agree with Kurt, check first if the foot lever can move all the way without touching the frame or anything else. Sometimes the pin (which holds the lever in place) is wrongly assembled and thats way there is not enough clearance.

good luck
Klaus

Yes the pin on the shift lever should be installed with the nut on top
It looks wrong installed this way but the nut needs to be on top to give enough claerance

Tommy

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Tommy Byrnes
54 R51/3 55 R50 64 R27 68 R69US 68 Sears Allstate 250 (Puch)

tonyo
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VBMWMO #7915
Joined: 03/01/2011
Posts: 29
Thank you, gentlemen. Oil is

Thank you, gentlemen. Oil is Ok; nut is on top. Removing the transmission for inspection is scheduled for next week.

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TonyO

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