I've managed to remove the throttle spindles from my twin 40 idf webers but on each carb, one bearing came out with the shaft and is stuck on it and the other is stuck in the housing. I've got new bearings to put in but can't work out how to get them out of the carb. Does anyone have a method of doing this please?

Can you get a bolt in ,washer on your the inside. Socket on the outer casing with another washer. Fit nut and extract. Re: baby puller, if that makes sense 
Paul

Can you get a bolt in ,washer on your the inside. Socket on the outer casing with another washer. Fit nut and extract. Re: baby puller, if that makes sense 
Paul

I don't think so as the diameter of the hole in the carb casing just inside the bearing is the same as the inner diameter of the bearing.

My weber info is a 1000 miles away but have a search online there must be something there possibly on you tube. May need a split tube with a cone in it so as the cone pulls out it expands the outer to grip the bearing inner face. Something like a  rivnut that just goes in then expands and grips.

My weber info is a 1000 miles away but have a search online there must be something there possibly on you tube. May need a split tube with a cone in it so as the cone pulls out it expands the outer to grip the bearing inner face. Something like a  rivnut that just goes in then expands and grips.

Thanks Snoopy. I get your thinking but with no gap between the bearing inner and the case, which is exactly the same diameter I can't quite see how to do it. Have had a look on YouTube,  nothing yet.

You could try the welder just to attach a rod or wire as something to pull or perhaps a gentle warm in the oven to expand the body as it may relieve pressure on the bearing.

One of those screw extractors with the threaded conical end?

One of those screw extractors with the threaded conical end?

Dave can you show me a pic or a link - not sure what you mean?

I had to get a bearing out of a vespa case half that had the same access problem, first I removed the dust seal, dug our the bearing ball spacer with a pick tool, got all the balls at the bottom, with a wiggle the centre race then can be removed, lots of heat from a paint stripping gun then working 1 side at a time with a sharp screwdriver hooked into the ball grove and using a hard wood fulcrum (hammer handle) it moved slowly then popped out.

The problem I found with using anything to bite on the inner was that it would not stop spinning but wish I'd have thought about the rivnut idea from Snoopy, that would have been much quicker.

I had to get a bearing out of a vespa case half that had the same access problem, first I removed the dust seal, dug our the bearing ball spacer with a pick tool, got all the balls at the bottom, with a wiggle the centre race then can be removed, lots of heat from a paint stripping gun then working 1 side at a time with a sharp screwdriver hooked into the ball grove and using a hard wood fulcrum (hammer handle) it moved slowly then popped out.

The problem I found with using anything to bite on the inner was that it would not stop spinning but wish I'd have thought about the rivnut idea from Snoopy, that would have been much quicker.

Thanks Flags. I'm trying to avoid taking it out in bits as I would think it's most likely to end up with damaging the case. Looks like it's the only way though. I don't think the rivnut method will work in this case as there is no space behind the bearing: the hole in the case is the same diameter as the internal diameter of the inner hole in the bearing. Someone suggested putting the carb in the oven to heat it up - might give that a go.

Mark,

Have you got a picture of what you are trying to remove?

Mark,

Have you got a picture of what you are trying to remove?

This is the bearing stuck in the case (the other one is the same)



This is the inside, where you can see the hole that's the same diameter as the bearing inner



These are the two bearings stuck on the throttle shafts



Any ideas guys?

That's the same kind of thing I had to do and Snoopys idea is great as you can shim the rivnut with washers until it will only deform and grip on the bearing. I'd use a heat gun on the aluminium case and an air duster to freeze the bearing for maximum effect.

Funny enough that's the recommended way of refitting the same vespa bearing.

That's the same kind of thing I had to do and Snoopys idea is great as you can shim the rivnut with washers until it will only deform and grip on the bearing. I'd use a heat gun on the aluminium case and an air duster to freeze the bearing for maximum effect.

Funny enough that's the recommended way of refitting the same vespa bearing.

Ah ok, I get it now. Only problem is lack of rivnut tool & rivnuts! 

Evil bay sells them loose. Space the using a socket/washers as per Flags comment. Using the correct size bolt should compress the rivetnut and hopefully extract the bearing.
Alternatively a collet type of bearing puller(hire/ buy) should do the job.
Just my suggestion