Sprucing up the old R65...

[Barry]

The float pivot pin is serrated at one end only and should be driven out from the other end. Trick is to discover which end is which. It's easy enough to see when the carbs are off but not so easy when the carbs are on the bike.  Both carbs are the same and not handed in this respect so if the carbs are on the bike one side will need the pin driving in towards the engine and the other side the pin will have to come out away from the engine which is not so easy.

Provided the pin is pushed in the correct direction it should move easily enough with a few light taps and little stress on the mounting lugs.

[Adrian]

Hi Barry and thanks - I can see the knurled end using a magnifying glass so no probs there  

[montmil]

Encourage you to use OEM Bing carb diaphragms.

[Adrian]

Hi Montmil - yep I'm trying to find someone to order them from. Snowbum recommends them or a Bing service kit - which I can get from Motobins. I have the carbs - or the first one completely stripped down except for the main jet assembly. Its seized in place so I'm wondering what to do about that. Its only 10 mm in size the "nut" so I'm thinking that a very long lever onto my socket arm might be the go. Everything else has come away okay - using an impact driver on all the screws. I'm just waiting on a reply from Munich Motorcycles here in Oz before I make a final choice of what to buy and where.

[montmil]

Go gently on that main jet block!  Suggest you first try some of the best ever 'magic juice' to assist in the removal.

Mix up a small batch of 50:50 hydraulic brake fluid and acetone. Swab the joint and keep it damp for several hours. O'nite would be best. With the carb body inverted, you may be able to flood the area. Amazing stuff. Betcha that'll allow little more than a gentle tug for the giveway.

[Barry]

I have the carbs - or the first one completely stripped down except for the main jet assembly. Its seized in place so I'm wondering what to do about that. Its only 10 mm in size the "nut" so I'm thinking that a very long lever onto my socket arm might be the go. Everything else has come away okay

I had that happen one one carb. If you use excessive force and shear the casting the carb will effectively be scrap. It took me several days of heat cool cycles and applying penetrating fluid to shift it. The O ring on the main jet holder may prevent the penetrating fluid from reaching the threads if you apply it only from below so it's be best to apply it from the side through the emulsion air inlet port which can be clearly seen top left on this cross-section. You can see that it leads nicely to the space above the threads. That annular space tends to get clogged up with engine breather condensate which is what often causes the main jet holder to seize. In the worst case scenario if the space is packed absolutely solid the penetrating fluid might still have trouble getting to the threads but there is no other way.  If you spray fluid down this air port and it comes out the main jet and the needle jet then the space isn't blocked solid.

Good luck, it will feel good when it eventually frees up and unscrews.

[Adrian]

Thanks Barry - I'll give it a try today  

[Adrian]

Okay - here are the first pics of the carby clean up. It all came apart without any real dramas. Thanks to a couple of very helpful guys on here and Snobum's site. Everything has been cleaned with highly toxic and very efficient Carby Cleaner. So as soon as my Ultrasound Cleaner arrives it'll be interesting to see the results. New every thing internal is about to be ordered. So much for a quick tidy up. $300 odd Aussie dollars  later ........

[Adrian]

As you can see I not only took lots of fotos for reassembly - I made a few notes too .........  

[montmil]

If you've broken down both Bings and their respective enrichener bits, it may get sorta confusing during reassembly. Seeing as you have the carb bits in separate containers, reassembly will be less perplexing. However, those enrichener parts can be done up back-ass backwards and still go back on the carb body! You wouldn't be the first...

Several folks here have good photos of the enrichener parts in correct position. Shout out when everything is freshened and we'll post up pics for you.

For now... Happy cleaning. [smiley=thumbsup.gif]

[Barry]

Here's a tip for a possible small improvement on re-assembly.  The enricher gaskets have a bit of a reputation for getting sucked in. I think that may be in part due to the flatness of the mating surfaces on the cover. While it's apart check the fit of the enricher cover against the casting and if needed lap the cover on some wet and dry.

[Adrian]

thanks Barry - I'll check that - I had read somewhere - probably Snowbum - about that - there was a suggestion of using a semi setting gasket compound - just a very thin film. But I think its probably wise to do both  

[Adrian]

If you've broken down both Bings and their respective enrichener bits, it may get sorta confusing during reassembly. Seeing as you have the carb bits in separate containers, reassembly will be less perplexing. However, those enrichener parts can be done up back-ass backwards and still go back on the carb body! You wouldn't be the first...Several folks here have good photos of the enrichener parts in correct position. Shout out when everything is freshened and we'll post up pics for you.

Thanks mate - I've taken a few pics to make sure - I hope -  that I put it all back the right way. I'm only taking one carby apart at a time to prevent any mixing of bits. I'll let you know when I'm reassembling - so I can see the pics thanks  

[Adrian]

Hello again - well the results of the Ultrasound are disappointing but the unit I bought is faulty - but the company gave me my money back without any problems. I now own a dysfunctional ultrasound cleaner lol lol, It sort of works a bit so I have used it to clean off the top layer of crud. Then used Rub and Buff to finish off the surface. So here is carby number one looking quite good I reckon ........

[Barry]

Looks very smart indeed.

Will you be attempting to "potato" print the white paint on the black cover.