Great pictures! I need to make one of these refill tools but can't figure out how to do it
from the description. Specifically:
>The check valve (very simple one I might add) has a 14x1.5 thread pitch on both sides.
Is this some standard part? Searching online doesn't lead me to anything that looks correct.
If anyone has experience building a DIY version of this tool, please provide details.
(I am aware that I could simply purchase Porsche tool 000-721-950-71 but would like to find a cheaper alternative.)