The boiler is large and wanted to make sure there were no problems with getting water into it.  I decided to use an axle pump and made provisions to install a couple Ohlenkamp injectors at a later time.  Couldn't find the right size pumps so I decided to make them.  Made some drawings, got the materials and started to cut away.  I drilled, bore and reamed the bronze piston cylinder and made 4 brass check valves.  The eccentric was made of cast iron and the rotating rings out of bronze.  No castings were used.  Here are some pictures.