this was one of the first auto chucks that Ridge brought out after the 800 and 801....it was a good machine then (early 1980's). You may want to follow up with Ridge Tech support on parts availability, I doubt they still have parts but worth checking
We dug up an old 802 in my shop, and are also looking for some parts/accessories. I'll be PM'ing you as well for that parts list, if you've still got it.