Craig, et al; I realize your post is over a year old, but my problem falls within the airbrakes subject. BTW, did you manage to solve your issue(s)? My air brakes are also the older, cable driven style (Mfgr'd `94) - Precise Flight no longer supports this model at all - but they did send my the pdf ...

Brad, Thanks for checking in! As you recall, we discussed this briefly as you were leaving Oshkosh. In any event, I got lucky - the poppet valve was available locally, and I picked it up the same day. I ordered the high pressure check valve through Trausch Dynamics in Grand Island, NE for $12.59 - i...

For the past two years - on and off again - when testing my (emergency gear) hand pump, it was void of hydraulic oil, and wouldn't cycle the gear down. I replaced the three seals on the manual pump, and it worked fine for a few months, but then eventually failed - again, for lack of hydraulic fluid ...