The Slide-o-matic will live again!
I couldn't find a kit to rebuild the original stainless flush valve so I'm reengineering the toilet with a new plastic they ford valve.
That's the old valve.
I took it apart and used the stainless l shaped shaft from it in a new plastic valve.
I opened up the standard Thetford plastic valve and put the old L shaped shaft in from the original valve.
Cleaned and painted the mounting plate. Used new rubber expanding nuts from Ace. My new favorite store. All stainless machine screws and nuts.
Put a film of silicone on the rough ceramic bowl flange and mounted the remade valve. It's about 3/8 inch thicker than the old one so I cut some 3/8 spacers out of steel that I had in my shop.
Bead blasted the base parts. They were nasty.
To be continued. . .