Bing is the brand of carburetor that BMW used on all the old airhead bikes. They are actually very simple, but as with all things that seem simple, there may be a tricky trick that you need to know before diving in.
As always, RTFM.
...And watch youtube.
I found a technician in NH, who posts lots of how-to videos on youtube. Man, this guy is great! He did a complete disassembly of a Bing carburetor. Watching this helped put together all the pieces of information that I read in the manual.
Since the bike was delivered with the Left carb in a bag (with a rebuild kit!! Yay!), I decided to start with that one. I had the manual with me, as well as the video. I took it nice and slow so I didn't screw anything up. In about 25 minutes it was fully disassembled and ready to go into the parts cleaner.
I let the parts soak for a whole day and pulled them out. All that dirt and grime was loosened up, so I used compressed air to blow everything off. Wow - everything came clean, just about like new!
Next, I prepared all the new gaskets and o-rings.
Now to put the o-rings on the various jets.
Oops!! I split one of those tiny o-rings! What to do? There must be an o-ring specialist in Portland somewhere, right?
Yep. Apparently that is me. I looked in my stash of parts and found an exact match for the one I ruined. That was pretty lucky, eh? Who says being a pack-rat doesn't pay off?!
I took it nice and slow again and put everything back together the same way it came apart. About 30 minutes later I was done! Just like new again. Bing!
Next up... the Right carburetor. I found a float bowl on eBay that should replace the missing one. Fingers crossed.
It's supposed to arrive on Saturday.
Bing, bang! I'll finish that job by Sunday!
As always, RTFM.
...And watch youtube.
I found a technician in NH, who posts lots of how-to videos on youtube. Man, this guy is great! He did a complete disassembly of a Bing carburetor. Watching this helped put together all the pieces of information that I read in the manual.
Since the bike was delivered with the Left carb in a bag (with a rebuild kit!! Yay!), I decided to start with that one. I had the manual with me, as well as the video. I took it nice and slow so I didn't screw anything up. In about 25 minutes it was fully disassembled and ready to go into the parts cleaner.
I let the parts soak for a whole day and pulled them out. All that dirt and grime was loosened up, so I used compressed air to blow everything off. Wow - everything came clean, just about like new!
Next, I prepared all the new gaskets and o-rings.
Now to put the o-rings on the various jets.
Oops!! I split one of those tiny o-rings! What to do? There must be an o-ring specialist in Portland somewhere, right?
Yep. Apparently that is me. I looked in my stash of parts and found an exact match for the one I ruined. That was pretty lucky, eh? Who says being a pack-rat doesn't pay off?!
I took it nice and slow again and put everything back together the same way it came apart. About 30 minutes later I was done! Just like new again. Bing!
Next up... the Right carburetor. I found a float bowl on eBay that should replace the missing one. Fingers crossed.
It's supposed to arrive on Saturday.
Bing, bang! I'll finish that job by Sunday!
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