Martin-
You have....Tangas is a great mechanic, and likely could be a successful full-time tech if he weren't chasing bad guys!
Perhaps he has more b@lls than brains, that Tangas-did you see the W126 job he tackled?
As to the topic, I've worked on auto & aircraft hydraulics for 15+ years, and I can add nothing to Tangas' post...very thorough. Perhaps this is why none of the full-time techs responded-nothing to add either?