I don't have a drawn schematic; links to parts below.
Pump pulls air from top of beads (through filter on end of tube in the container), into a hole drilled into the case of the pump. Filled the intake on the pump with caulk. Output goes to oil filler, return from breather goes into bottom of silica bead container.
I went cheap, didn't buy special containers etc and used old scrap wood. The oil dipstick fits perfectly into 1" PVC via a PVC junction. The old ice cream container (brown lid) is for storing the rubber plugs when not in use. They get oily, this keeps dust off so I don't contaminate the filler tube when reinserting.
Hope that helps...