Strange bolt beneath the gearbox;

schrader7032 · Post by **schrader7032** » Wed May 21, 2008 7:16 am

Did you follow this other thread:

http://vintagebmw.org/forums/viewtopic.php?t=763

Seems like there's some similarities there...

I don't see the parts number you mention. The ETK shows a part 11 13 0 007 163, a screw plug (M14x1.5), and there are two of them. One is obviously the drain plug...but I can't figure out what the other one might be.

Kurt in S.A.

Micha · Post by **Micha** » Wed May 21, 2008 7:37 am

No, I haven't seen it, 'till now. Anyway, Saintclair is worried about the non – original drain plug, which obviously went through a change and an improvisation took place. No reference to this strange piece that is also fitted there. Any idea? The parts book describes the separated pieces as spring, stop pin, bolting piece etc. but does not give a name to the whole parts assembly…

EuroIron · Post by **EuroIron** » Wed May 21, 2008 9:44 am

http://www.beemergarage.com/manuals.html

click on transmission

it's the dingleschollfer for the kick starter

ok I'm just kidding about the nomenclature

part numbes 92, 93, 97

pretty sure something mean will happen with 83, 85, and 91, but, not impossible to cure

Micha · Post by **Micha** » Wed May 21, 2008 9:52 am

Yeah, that's it. But what is it??

Darryl.Richman · Post by **Darryl.Richman** » Wed May 21, 2008 9:53 am

That cover or bolt takes the other end of the foot brake return spring. I think you've got the right part number for it. From the drawing, it looks like removing that could cause problems in the kickstarter area.

Bruce Frey · Post by **Bruce Frey** » Wed May 21, 2008 12:07 pm

I thought it was the attachment point for the centerstand spring, at least that is how my R6 is set up. The prewar and postwar transmissions cernterstands are similar.

Bruce

Darryl.Richman · Post by **Darryl.Richman** » Wed May 21, 2008 1:40 pm

I thought it was the attachment point for the centerstand spring, at least that is how my R6 is set up. The prewar and postwar transmissions cernterstands are similar.

Bruce
There's a special bolt (p/n 10 06 212 "Einhaengebolzen") that attaches horizontally to the left side of the transmission, that takes the centerstand spring. If you look at Micha's photo above, you can see both the centerstand spring and the bolt.

Micha · Post by **Micha** » Thu May 22, 2008 7:03 am

Darryl was the closest one: Mark Huggett explained to me that this part has 2 functions: Internal – holding spring and pin for kick starter ratchet, and on the outside there are bikes that the return spring of the foot brake lever is hooked on to it.
Always good to ask.

Bruce Frey · Post by **Bruce Frey** » Thu May 22, 2008 10:48 am

But which bikes had a footbrake return spring attached to that post and what was the part number for that spring?

Based on the Ersatzteillistes on John's Beemergarage, the post was first added to the plug on the R51-R71 models. The foot brake return spring on these models, however, shows to be mounted directly on the foot brake rod. I can find no reference (illustrated or not) to another foot brake spring.

This Ersatzteilliste is a 1941 version, so possibly it was only on the early machines. I will check my early version books tonight....an interesting trivia question.

ciao,

Bruce

Darryl.Richman · Post by **Darryl.Richman** » Thu May 22, 2008 10:56 am

The R51/2 parts list (in the silver behlfs-katalog) shows the same parts. The return spring (rueckzugfeder, p/n 40 44 217) is shown with the frame parts.

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