My '52 6400 has a completely rebuild or new braking system. New lines, rebuilt hydro vac, 6 new wheel cylinders, & new master cylinder. The brake shoes are adjusted just at a nominal drag.
Symptom: I would build up very good pressure by 3 brake pumps (roughly 1/2 a stroke). However, the brake pressure fully depletes the lines BACK INTO the master cylinder. I adjusted the brake clevis out roughly 3/8". The plugger (correct name?) is just behind the needle size hole in the master cylinder itself. Now the brakes won't disengage! haha. I ran out of time to reverse half the distance of the clevis so maybe that will fix it? With the built up pressure, the pedal doesn't even travel 1/4 distance.
Anyhow, looking forward to your thoughts for a proper master cylinder adjustment. Thanks!
