I'm having a problem with the brakes in my 51 chevy 2 ton 6100SW. After adding fluid and pumping away the pedal will become hard and seem to be okay. But only after pumping the pedal several times. First 3-4 pumps and it goes to the floor.
I'm reading that I must bleed the system first hydrovac, with a pressurized bleeder tank with a minimum of 20 psi. Does the bleeding have to be under pressure? and if so, where do I get a tank or have it done? Thanks for your help with this one!