Bearing removal help required

Stripped the West 53 from the Curare down to replace the bearing, when removing the crankshaft, the bearing fell apart, leaving the outer ring in place and I can't get it out. Tried heating the crankcase and cooling the bearing but no joy, can't get hold of it with anything. Do any of you engineering types have any bright ideas or suitable tools for removal?

Pictures attached

Oh dear Jon. Assuming there is a gap between the bearing case and the crankcase or an edge then I think you are in need of a bearing puller with outside grips. But for something that small, possibly a specialist tool. You have tried the obvious ideas. Can you see an edge from the other end that maybe a small parallel punch could get a tap on. But for something that small, possibly a specialist tool.

Maybe just engines could help

Hi Jon

I assume it fell apart because the ball cage failed. If you have the bearing inner and balls, you could try reassembly without a cage.

Offset the inner to the outer and drop the balls into the gap generated. Then centralise the inner by pushing the balls around until they are equally spaced. Some bearings are assembled this way whereas others have to have their outers squeezed slightly to get all the balls in. (If assembly is difficult, you might get away with using one ball less.

regards

Ron

Jon asked

Do any of you engineering types have any bright ideas or suitable tools for removal?

I have a three legged puller but I think you knew that so maybe you don't believe there is enough exposed land to get hold of.

Note for Phil C, I know it should be "of which to get hold".

Dad

DavidTappin wrote: Jon asked

Do any of you engineering types have any bright ideas or suitable tools for removal?

I have a three legged puller but I think you knew that so maybe you don't believe there is enough exposed land to get hold of.

Note for Phil C, I know it should be "of which to get hold".

Dad

Will you two stop it..... :lol: Forget grammar, as long as the context is correct and we all know wot u meant who cares! :evil:

Have you tried leaving the entire assembly in your oven for a good while then take it out and tap it a few times against work surface, likely to just pop out! I've done this before

DavidTappin wrote: Jon asked

Do any of you engineering types have any bright ideas or suitable tools for removal?

I have a three legged puller but I think you knew that so maybe you don't believe there is enough exposed land to get hold of.


Dad

No I didn't know you had a puller, but I don't know what it would get hold of, the only visible part of the outer surface of the bearing is a small area at the top which you can see in the picture taken from the top of the cylinder.

Dave Rogers wrote: Have you tried leaving the entire assembly in your oven for a good while then take it out and tap it a few times against work surface, likely to just pop out! I've done this before

First thing I did Dave, that's how I always get a bearing out, couldn't shift it at all

If the previous suggestion of reassembly of the bearing is not successful then i would turn an alloy bar with the last 5mm rounded to the profile of the balls. which just fits the existing outer shell bore. Drill the centre approx 6mm. then make 2 saw longditudinal saw cuts at 90 deg to each other. Then drive a taper (centre punch into the approx 6mm bore to expand the profile into the bearing - Now you have something locked into the shell.

If this explanation doesn't make sense - I'll send you a sketch.

Hi Jon, Drop it round to me, I have made all sorts of tools for jobs like this, a quick is stick it in the deep freeze for a couple of hours then just heat the casing near the bearing for a few seconds and give it a good bang on a piece of wood, but feel free to drop it round, regards Frank

Kevin

I understand the idea thanks, but don't have the facilties to make the tool.

FrankRobinson wrote: Hi Jon, Drop it round to me, I have made all sorts of tools for jobs like this, a quick is stick it in the deep freeze for a couple of hours then just heat the casing near the bearing for a few seconds and give it a good bang on a piece of wood, but feel free to drop it round, regards Frank

Thanks Frank, will give that a try, I have already tried the reverse, heating the crankcase and cooling the bearing but I will try this way. Otherwise I might be dropping round!