Finally time to install the pistons. I like to lay everything I need out on a bench: pistons, assembly lube, container of oil, ring compressor, hammer (to use the handle). Before the piston goes in first orientate the positions of the ring end gap, I put the top ring gap to the Rh, the 2nd ring to the Lh side and the oil scrapers towards the Rh side 90deg from each other-expander towards the Lh side. All rings should move freely with no binding or drag. Dip the head of the piston in some oil, st

Syringe-filling machines give health workers a helping hand