Yeah I'm still on the learning curve when it comes to electricity. I gotta have it spelled out for me, black and white haha luckily, this postwar stuff is usually simple. I'll see what I can find on the internet.
Has the crane bound up or anything lately that might bend a shaft? There's a guy named Dave that might be able to help you. I've bought off of him for years and he's helped me on occasion as I've cleaned up my grandpa's set. I had a book on older Lionel accessories but I'm not sure where it got to. I'll see if I can find it real quick. Maybe the crane is in there.