The bleeder on aircraft brakes is on the bottom, not on the top like a car. Unlikely to impossible to bleed from the top and/or with a automotive vacuum system
The way to bleed aircraft brakes is from the bottom with pressure...I used a 2 gallon garden sprayer. Cut the sprayer end off and attached the fitting from the now useless auto vac. kit. Could use a piece of hose from the cut off wand end to the bleeder valve.
I second guessed my install of the Matco parking brake many times during this exercise...was ready to by-pass it. Trust good reasoning over" try anything in frustration". After hooking up the new pressure sprayer rig I thought for sure this would work. no go and a hell of a mess.
Started to rationally troubleshoot. Broke system apart at parking brake and tried to force fluid up..no joy. Then went to the cailper and no fluid would come out of the top of the caliper. Thought something was wrong in the caliper but it seemed odd that both would be bad. Pulled right caliper off.. no fluid flowing through cailiper... no wonder I couldn't bleed the damn things. Pulled the bleeder valve off and could not get fluid to go through it! Yikes. Could both bleeder valves be bad?
Then it dawned on me.... I was loosening the larger 7/16 fitting to bleed....needed to loosen the smaller 1/4" fitting, a lot, to bleed. Sometimes I am so stupid.
About 30 minutes after that revelation, I had bled both sides twice and all was good.
Cleaned up my mess.
Used about 2 quarts of fluid with 1+ quarts on the floor.
