Vintage BMW Motorcycle Owners

I came back from riding about 60 miles and when I parked the bike I saw after ca. 15 minutes that there is a leak from there. 1. Do I have to take the engine/gearbox out of the motorcycle to replace the oil seal there? Or can the oil seal be replaced by disassembling the kickstarter lever, the batte...

Excellent idea. I think that the most critical issue in our motorcycles is the engine oil. Here in my country for example, it is almost impossible to find good old 40 oil for these old engines. Only one place keeps it in stock (Castrol Classic Green). But, it is very expensive and there is no guaran...

Does anyone happen to have a technical drawing of a wheel hub (half hub type) on a R51/3 ?
I'm machining my own and would like to get the exact measurements of the inner splines.
Picture from Salis site:

wa1nca wrote: ↑

Wed Apr 03, 2024 4:39 pm

Its best to just to tape the outside of the lens down and use some silicon gasket sealant on the inside of the lens, let it dry and then remove the tape on the top side

This.

Right. Just note that a flat one is requiered there.
The handlebars levers have the same one.
If you don't find a flat one - take a regular one with a std. M6 bolt and sand it down. The bolt will be used to clean the nut's thread after sanding.

I see what you mean, but having owned a BSA M20 for decades, this is where I laugh, whereas with the BSA I cried. Theoretically, if someone were to travel the roads I was on with the BSA dragging a huge magnet behind him, there is a high chance that he could assemble half a motorcycle from the parts...

Yesterday I came back from a trip of about 100 km.
When I parked at home again, I noticed that the driveshaft rubber disc was gone. It was in great shape and now it's just gone. The truth is that it made me laugh. There are not even any leftovers
Anyone familiar with this phenomenon?

Thanks - that makes sense. Out to the garage now... Evening Vegtamr, Have you already dealt with the brake lever? Did it work for you? I remember that when I lowered the position of the lever, the stroke of the braking was really impossible and it ended somewhere below, when the pressure of my foot...

Same here. I also have my (original) pedal sitting well above the level of the footpeg.
I played with all the parts that are in the "rear brake system chain", tried all kind of options and never got it right.

Is there a guide or protocol regarding the assembly of it and its calibration?

Good morning,
From the workshop manual:

Wash also common air filter with petrol or kerosene and re-oil metal screen after cleaning