I have been scratching my head on this issue. I'm a one man show in the shop, and getting up and down is really getting as old as I.
I purchased a cheap vacuum pump last year to get my Zephyr vacuum wipers working. It pulls a steady 15"Hg of vacuum. I'm thinking that if I use it with a catch bottle and timer I can test out the four brake lines and the other inline devices. 15"Hg of vacuum should do it, right?
On another note, a car buddy who owned two brake shops at one time thinks there are three different proportional valves. One for disc/disc, one for disc/drum and another for?. Care to comment on that idea?
