Hi Guys,
Success! I have been working on restoring a few Lionel 2037 and 2026 engines. I completely cleaned the motors, replaced the brushes, new wires and new smoke units (the resistor types), new bulbs. I uses a dremel tool to clean the valve gears. They are great runners and smokers!.
Here are a few pictures of the 2026 and a movie.
Many thanks to Jeff Kane aka the Train Tender for his fast service on parts.