The New And Improved Unofficial R65 Forum V2

Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: b1web on March 26, 2017, 12:27:38 PM

Title: Need help finding a bean can part
Post by: b1web on March 26, 2017, 12:27:38 PM

Replacing the points on a late 1979 R65. The bean can has a white breather tube of some kind and it has split. It is about 10" or so long and routes up around the alternator. I can't find a replacement tube on the Microfiche. Anyone know what this thing does or where I can get one?

Title: Re: Need help finding a bean can part
Post by: Bob_Roller on March 26, 2017, 01:26:04 PM

Does this ' breather ' , contain wires that go to the coil ???

Just for information, no parts are available for the bean can. If you need parts, you need a donor bean can to take parts from .

Title: Re: Need help finding a bean can part
Post by: wilcom on March 26, 2017, 01:50:56 PM

Quote

Anyone know what this thing does or where I can get one?
                   

This guy?

Title: Re: Need help finding a bean can part
Post by: Barry on March 26, 2017, 03:35:57 PM

I don't think anyone knows what it's for or even whether it's essential. One time we discussed it years ago the only thing I could think of was it's something to do with venting the ozone created by the points. The air flow through the front cover would tend to draw air out through the tube but on the other hand how would a flow of air get in to the canister as that's the only vent ?

It's definitely not intended for the points wire as that is routed outside the can via the condenser termination.

As for replacing it, any rigid plastic tube of the same diameter would probably do the job.

Edit:
Here's something even more curious. I have the 78 version of the official BMW workshop manual. It contains half a dozen pictures of the bean can installation and not only is the tube not shown but the can doesn't even have the grommeted hole where the tube fits.  Pictures in the riders manual don't show the tube or the hole either. Perhaps there was some problem with the very early production machines that the tube is intended to address which would suggest it does serve a purpose.

Title: Re: Need help finding a bean can part
Post by: b1web on March 26, 2017, 04:38:48 PM

That's the one Joe, and thank you Barry. Every little idiosyncratic issue with this model year makes this bike that much more interesting to me [ch128513]

Thank you guys so much for the replies. Now on to the valve adjustment.

Brad

Title: Re: Need help finding a bean can part
Post by: wilcom on March 27, 2017, 11:16:25 PM

Quote

I can't find a replacement tube on the Microfiche. Anyone know what this thing does or where I can get one?
                   

I found the part number for the white tube.... I ran across it on Snowbums site it's part #12111243920

WHY IT'S HARD TO FIND... THEY STUCK IT IN WITH THE TIMING COVER....GO FIGURE, HUH
Select another vehicle > Engine > Housing cover