Completed dismantling of the compressor bay and lower door frame earlier this evening. After all that mess I only had two small screws whose heads snapped off.
I will have to sandblast the inside before it can have one or two rust holes patched and then the entire thing repainted. Currently hunting around for the wiring diagrams.
While pressure washing the compressor I spotted a sheen which is likely bad news. With the fan motor being totally seized that could only mean there's a hole in the lines somewhere, presumably from the massive amount of corrosion.
While I wait for it to dry I'm sitting here working on the coin acceptor unit. It consists of a Coinco slug rejector and a totalizer mounted in a metal frame with an electromechanical linkage. So far the slug rejector is more brittle than anything.