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Dalhousie in Northern New Brunswick.

All of my past attempts to unscrew the chuck backing plate off of my lathe have caused the headstock DE bearing seal to leak. It's just a small one, but it wasn't there previously. That's it, time to 'cut er off'.

There are no visible pins holding the back plate to the spindle (see photos). As for a hammer, I used a small sledge hammer of about 2 lbs. I gave it some pretty good raps but was afraid to damage the spindle bearings. I didn't put anything between the pipe wrench jaws as I thought it would lose...

Well folks I’ve tried just about everything I can think of to remove the chuck backing plate from my 9” standard modern utilathe. I tried heating the back plate and cooling the spindle. No luck. Impact gun didn’t work. I fabricated a jig attached to the back plate and put a large wrench on it...

I had read a post from before on one pissible solution for the removal of a seized chuck. A split aluminum collar is fabricated at a slightly smaller diameter than the rear if the spindle through hole and it is clamped onto the spindle to keep it from turning. An impact wrench can then be used...

The chuck is probably stuck on there pretty well. The previous owner, who has had that lathe for several years, said he has never removed it and doubted that it had ever been removed. I’ll give it a go today. I may need some tips on how to remove a stuck chuck. I am fairly new to the machining...

Thanks for the help folks! CH

I have recently purchased a 70's era 9" standard modern lathe and I would like to remove the chuck but I am not sure if the nose spindle has a LH or RH thread. Thanks. Colin