RWS (Diana) Model 45 Disassembly, Part 2

On I go…


With the barrel removed, I noticed that one of the washers looked suspiciously like a hardware store washer. Rusty too.


The other washer is a characteristic Diana stamped shim washer.


Underneath the wrong washer was another correct shim washer. So I probably have to make a replacement for the rusty one.


The piston was sleeved.


The sleeve and a washer that the end of the spring bears against.


With the sleeve removed the cocking shoe fell into the piston. Not sure how it goes back together but I bet I’ll figure it out.


The rod in the piston is both spring guide and safety actuator.


I presume this square hole is what gets caught by the trigger assembly.


The piston seal seemed to be plastic at first.


But a gentle scrape with my fingernail shows it’s just dirty and compressed leather.


I cleaned it off with some alcohol.


I have no idea how to get the seal off. Any ideas? In a more sensible gun the steel bit there in the center would be a screw…