Startrite Tilt Arbor Sawbench - spindle removal

[oldboffin]

I am restoring a TA 145 though I think this applies to all the similar saws. I am having a struggle to remove the nut at the pulley end of the spindle. Does anyone know if the thread is right or left hand? and any advice on how to proceed welcome.
As can be seen from the picture there is a transverse hole next to the nut though this is obviously rather small if it were intended to put a tommy bar through given the size of the nut. It also looks as if at sometime someone has used a drift to turn the nut clockwise.
Thanks in advance
Oldboffin

 

[Distinterior]

If I remember correctly, that nut is a standard thread and holds in place due to the fact that it's a locking nut.

The hole in the shaft lines up with the hole in the cast iron table and allows yoù to drop in a tommy bar to lock the spindle when tightening and removing the blade nut.

Tim.

 

[mrpercysnodgrass]

Have you tried a proper dismantling fluid like this one....
https://uk.rs-online.com/web/p/lubricants/0691117/

 

[oldboffin]

Thanks Tim for confirming handedness of thread and I should have realised I was looking at a large locknut. Also thanks for the suggestion from mrpercysnodgrass to use PlusGas, I've not got any to hand but seem to remember it's paraffin based so have now got the nut soaking in a mixture of WD40 and paraffin. This nut is seriously stuck and am beginning to think of what would be the 'kindest' way to remove it even if it means destroying it.
Below are a couple more pictures. The assembly is now propped up so that the face of the nut is horizontal and I have an old blade packed against the swing arm and firmly clamped in an attempt to hold the nut at the blade end of the spindle. Despite all efforts the nut refuses to budge.

 

[memzey]

If that were my workshop, after soaking in penetrating fluid, I’d use a length of steel bar (turned down to size if necessary on the myford in the background) in the tommy hole, fit a wrench on the nut and torque them in opposite directions. A judicious tap or 12 on the end of the wrench would probably help I’d have thought.

 

[mrpercysnodgrass]

If the penetrating fluid does not work how about heat!
When I have some metal that will not budge I get either the hot air gun or the blow torch onto it. First heat it up till its kinhot, count to ten, turn anti a fraction then undo. Works every time providing the heat is not going to damage anything in the immediate area.

 

[oldboffin]

Thanks for all help and suggestions. This was only my second post and I've been grateful for the helpful response, it has really helped me to think things through. The good news is that the spindle is out, the bad news is that it's bent!
Here is how I got the nut at the pulley end undone, a couple of people suggested a tommy bar but the size of the hole, 1/4" meant that there was too much flex so it wasn't strong enough plus the hole was quite close to the nut. However your suggestions got me thinking and the pictures below show the solution. I can now use two spanners one of which holds the shaft. The pin is silver steel so shouldn't shear.
Best wishes
oldboffin