You've got me thinking now. I think there's a retaining plate and screw underneath, so you will have to remove the stud gear to see it. It's straightforward then, I think
I'll have a look tomorrow. Hopefully all simple enough.
Just been browsing eBay and have come across a Boxford STS fairly close by that would satisfy my requirement of a bigger spindle bore and metric screw cutting. It's decision making time now.
Got the rear bearing out and cleaned and re greased. It was in good condition as well - as was the grease.
The spindle was a right pain to fit back together. It's a job for 3 hands. The new back gear I had didn't have a pin located in the keyway to keep the key in place like the original, which caused a bit of bother as the key kept falling out when attempting to get the spindle on. So out came the drill and a 3.2mm bit to drill a hole for the pin and the key was secured. After that it all went together nicely.
I followed the 2nd of the two methods posted above to tighten the spindle bearings up. Hopefully I have done it correctly. All running nice and smoothly so far with no play in the spindle. I will double check it to be sure the next time I am back in the workshop.
Next job on the list is to clear the swarf out the tray and rub down the old flaky paint on the tray and cabinet and repaint to tidy it up. I don't plan to paint the actual lathe as whilst it has patches of paint worn, it is original and I don't want to remove any originality or character of it.
I'll be having a check of them next time I'm at the workshop. Had a bad afternoon in it today as my welder decided to stop wire feeding hopefully get it all sorted by R-tech on warranty. Just means the job I was doing will have to wait a while now.