Sorry for the long post, my question is at the bottom, but the top part is the history of what I have done so far. Also, let me say that I have been in the garage since I was 3 yrs old and have done lots of brakes but this one has me baffled.
ok, I'm working on a new to me 1958 2-ton. First off, it had no brakes so, I added fluid to the master cyl, pumped it up and got a pedal. A few days later, I still had brakes but I noticed some fluid leaking from the left rear wheel. I rebuilt the rear wheel cylinders, cleaned everything up, adjusted up the rear shoes and proceeded to bleed the hydravac and then all 4 wheels. I have to pump the pedal 3 or 4 times to get a firm pedal so, I figured I still had air in there.... re-read manual a bit, discovered it says to loosen adjuster for top shoe on both sides on the rear brakes (assuming that should squeeze air out of that cylinder). So, I did that and then re-bled hydravac and all 4 wheels. SAME ISSUE! I have now bled about 1/2 gallon through the system! I am using a mighty-vac pump (I know, not the best.) I came in and re-read the manual real slowly... and noticed the first section is for pressure bleeding then the manual bleeding part is for NON-Hydravac brakes.
So, my question is, can I manually bleed the brakes with the Hydravac or do I need to pressure bleed them? (manual says to pressurize 25-30# and not let it fall below 20# at any point during the process!) If the answer is pressure bleed, no problem, I will build a bleeder.
