bleeding new brake system

[trucks967]

ok help restored the brake system in my 64 new front disc brakes and power booster with porportion valve and left the rear drum alone so bled the master but do not get any fluid past the porportion valve any ideas ?????

 

[sleepysal]

Yup, you have to "center " the valve use one of these:
http://www.performanceonline.com/Combination-Proportioning-Valve-Bleed-Tool/