Thanks
I hope to add more photos and info now that nicer weather has returned. My goal is still to tear down and rebuild the spare UA-50 pump I have and to photo document that process. Probably take me more than a few months as many projects again compete for the nicer weather.
Also it took me a while but I found the portable American Pump that belongs in the rear bin of my fire truck. I will take some photos and post them when I get a chance over the next few weeks.