I thought I'd show off the refurbishing we did on another old Manitowoc. This one is a G-1700 Remote, 1991 model. We just cleaned it up and put it in a store a few weeks ago... The only thing I do want to add, it that the correct line set quick connect fittings couldn't be ordered in time, so we had to take the existing ones off (threads were horrible on both) and just solder the lines in.
This was the first 502 machine that we tested 422a in...worked like a charm! Total cycle time was right around 14 minutes, so it rivals the newer machines on speed.