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Default OT - How hot to expand enough...?

On Fri, 20 Feb 2009 20:00:07 -0500, Kenneth
wrote:



I know that by heating the yoke, I should be able to get
some expansion, and that should make removing it a bit
easier, but I have no idea how hot I want it to be to have
benefit, but without damaging the thing.


I have never done anything like this, but I think it might not take
much. For one thing, I think the heat might weaken the crud in btween
the two pieces. Can't you try it with moderate heat, and if that
doesn't work, let it all cool and start again in an hour. It
s cold out, right. Should cool quicker than that.

Hit the whole thing with a hammer, to try to break up that crud. Even
rust should break up some, if that's what you think it is.

Hit it also while youre trying to separate it.

Not on the bearings of course. IIUC it's binding beween a shaft and a
sleeve.

Wear safety googles in case the hammer shatters. I hear they do that.

Also, whatever (approximate) temperature I was to shoot for,
how would I know when I was there?

I am clueless, and would appreciate any help on this hassle.

My torch, and I await...

Many thanks,
--
Kenneth