carb overhaul

[pinetum]

Restore is going slowly but surely. I'm ready to do the carbs but a dire warning in the service manual says not to separate them! How do you overhaul a carb w/o separating and what the heck does a carb assembly plate look like? I did take off the diaphragm housing on 1 carb and a bunch of parts fell out. The diaphragm was wrinkled but had no holes. Does the diaphragm come as a separate part or an assembly as the parts list shows? It seems to me that the diaphragm should be part of the piston if it is to move the piston. The brass collar that goes inside of the piston was just loose when I took it apart.

Any advice on these items would be very much appreciated b4 I get myself in a heap of trouble.

Thanks

[Cougar]

DO NOT SEPRATE THE PLENTUM unless you have ALL the proper gaskets to put it all back together. I just went through this with my 1100 goldwing. But had the entire kit for the rebuild.

Just my 2 cents worth.

Jeff

[MiCarl]

Venture's don't have a plenum......

 

The plate the manual refers to is something flat to set the carburetor throats on before you tighten the bracket screws to make sure the throttle shafts are aligned. Misaligned shafts can cause problems.

 

That's really only an issue if you separate the pair from one side. The connection right to left is a linkage so there is not an alignment issue.

 

You'll have to separate left from right to pull the float bowls off. You shouldn't have to separate the 1-2 or 3-4 carburetor pairs.

 

The service manual will also tell you not to open the pilot mixture screws. Don't believe that either, you can't properly clean them without pulling mixture screws. Mark the carburetor body in line with the screw slot then gently bottom the screw, counting the number of turns until it bottoms. Record the number of turns then remove the screw. Under there are a spring, a tiny washer and a tiny o-ring. You need to fish them all out. Now you can clean! When you put the screw back in gently bottom it then back it out the amount you recorded earlier.

 

Do not soak the carburetors in a carb dip. It will damage the seals on the butterfly shafts. Replacing them is a really big job. They're hard to get, but I know a guy......

Edited February 19, 2010 by MiCarl

[pinetum]

Thanks MiCarl for the great advice. How about my ? on the diaphragms - do I need to order assemblies or is that what you get when you order them anyway?

[MiCarl]

If the diaphragms don't have holes I wouldn't replace them.

 

Parts shouldn't have fallen out when you pulled them. I haven't looked to see how the needle is locked in. Maybe someone else will come along and help with that.

[dingy]

If it would help you, I have about 40 pictures I took as I completely dissembled my 83 carbs.

 

Send me a PM with your email address and I can send them to you.

 

They are in a zip file.

 

Gary

[Condor]

That diaphragm is one assembly, and what's happened is the brass keeper has worked it way loose and the whole thing has come apart. It can be put back together and if you deform the brass keeper enough it will stay in. I've run into a couple of them that have done this. You might check the others as well. If you have trouble getting the diaphragm lip back into the groove try boiling it in water for 10-15 minutes. Makes them more plyable, and they seem to stretch a bit.... BTW to check for holes in the diaphragms hold them up to bright sunlight...

[dingy]

Pictures are on the way.

 

 

Gary