Bearing removal help

[courtney]

Hi, I have a 1965 C15F. I need to replace the needle bearing that's located in the kick start shaft.

Does anyone know how I can get it out?

There's no way to knock it out from behind. I've tried packing the shaft with grease and hitting the layshaft into it to force it out, but this doesn't work.

Any suggestions to get this out?

[Rog1]

I've not done this with a C15, but I have done it with bearings in blind holes. Here's the sequence:
1)  Put the new bearing, wrapped in plastic, in the freezer overnight.
2)  Place the casing in the oven, with the offending bearing pointing down.  Put oven on to maximum temperature.
3)  Put the kettle on, have a cup of tea. While you are drinking it, when you hear a 'donk' the bearing will be out.
4)  Remove casing from oven and new bearing from freezer. Before the casing cools down, insert the new bearing which should almost or actually just drop in.

[Bigsingle]

Hi, I have a 1965 C15F. I need to replace the needle bearing that's located in the kick start shaft.

Does anyone know how I can get it out?

There's no way to knock it out from behind. I've tried packing the shaft with grease and hitting the layshaft into it to force it out, but this doesn't work.

Any suggestions to get this out?

Heat up the case and wack the cover onto a piece of wood till it falls out .

[courtney]

Thanks for the suggestions boys. The bearing was actually located in the shaft, so I didn't know whether heating would actually help as they're of the same metal.

Anyway, I got I out using.... bread!

Same principle as the grease using the science of hydraulics. The grease was no good as there was an oil way in the shaft that it would must squirt out of. The Internet said to try bread, and it worked very well. No I just need to get the bread out of the shaft.

[iansoady]

I've used the heavy oil method for blind bushes successfully, and had heard of the bread method but not used it. But surely the type of bread needs to be correct - supermarket white sliced, sourdough, wholemeal?

[V500]

The quick and dirty way is to use one of those ball tip grinding tools in a Dremel to cut through the bearing then fold it inwards.

[courtney]

The bread was good because it was super quick and was easy to clean out, and I wasn't likely to cause any damage with my hamfistedness using a dremel. I did think about trying to collapse it in, or even using a shield anchor bolt to try to pull it out. I was surprised how well it worked. For reference, I used a sliced white tiger bloomer from co-op. I don't usually shop at co-op, but it was closest and needs must. I wouldn't recommend a seeded loaf.

[Stubaker58]

Please elucidate!
How does bread help with bearing removal?!?

[courtney]

https://youtu.be/00OlG5E8vLk?si=izXt0qkntMusKNHS

Here's a video without too much waffle.

[DAVE BRADY]

Hi,

Amazing!  As a starving peasant with no bread can I use cake instead?

Dave.

[iansoady]

https://youtu.be/00OlG5E8vLk?si=izXt0qkntMusKNHS

Here's a video without too much waffle.

Perhaps you could use waffle instead of bread?