Bad bearings? Dah Lih circa 1976 Taiwanese

Anyone have any idea what sort of maximum temperature I could get the quill up to before causing any damage?

Sorry 4gsr, just seen you posted earlier about max temp.
 
There are probably precision bearings in there, quite expen$ive. Do not overheat them. I would not heat them over 150 F.
 
There are probably precision bearings in there, quite expen$ive. Do not overheat them. I would not heat them over 150 F.
I'm trying to open it to get the bearings out for replacement but warping the quill I am worried about.
 
Wow, that is on there!

Before hitting it with a torch, I would consider welding a piece of hex stock in the middle of the yellow bar and trying an impact gun on that. If that failed then I would try a heat gun, and if that failed I would wrap the quill with a wet rag and try the torch.
 
well l can't be 100% sure until It's off but I can't think of any reason why. I know a BP is right hand and someone mentioned one brand so far that is left. Can you think of any others that are left? Also I have wrenched pretty hard the other way too.
 
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