In a word about Mity Vac's , as far as brake bleeding: THEY SUCK! And no
pun intended either. They are great for checking vacuum advances, heater
controls or actuators, lots of vacuum operated or controlled devices. We
never had the degree of success with mity vac bleeding that we did with
pressure bleeding.
This was over the course of several years, bleeding brakes on cars, trucks,
industrial equipment....anything with hydraulic brakes. One problem is that
with a mityvac, you have the potential problem of pulling air into the
system as well as pulling brake fluid from the master cylinder. Another
difficulty is getting some of the mity vacs to work as well if you
inadvertently get brake fluid into it.
We used a pressure bleeder that was nearly identical to the garden sprayer
type that was mentioned earlier. It was a commercial pump and canister, and
a 0 - 15 psi gauge on it, a shut off valve, and a length of hose and adapter
that was made up to attach to the fittings that were installed on the
various master cylinder covers we had for the different master cylinders we
worked with.
The one caveat with these , or any pressure bleeder - dont let the fluid
level get too low or you just went from pressure bleeding to pressure
aerating in a very short time.
Have fun
Mikey
62 Crown Coupe
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