Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Hi Bob, Nice to see you here.

First... WELCOME ABOARD...!!!

Both your Marklins have brass pistons and brass cylinders so getting the unstuck is usually requiring just penetrating oil and letting them soak it in for a week or two. Be sure to check the slide valve for freedom of movement as well. I once had a Jensen with a piston that freed in a couple days while the valve took an extra week. There are solvents that might free it quicker however you want to be careful to avoid solvent on your good original paint.

Best of luck with these. Your bride has acquired a couple of nice treasures.

Are you going to Cabin Fever?

Gil