4-Wheel disc brake help

[big d's red67]

I have wilwood D52 calipers front and rear on my truck, question is my rear brakes stay engaged after the first few times I hit the brakes like I have a line collapsed. I have replaced everything except for the hard line that runs from the front to the rear. I have a dual diaphragm 8inch booster, new master, disc/disc perportioning valve, braided lines front and rear. Any ideas as to what my problem could be?

[panhandler62]

I'm not personally familiar with those parts but; is there an inside and outside to the pads? Once upon a time I put the pads on backwards on an old Mercury beater I had and it acted like that -- all was well until I hit the brakes then they would clamp down and stay that way.

If that's not it (or not possible with those calipers, etc.) then...

This is just off the top of my head but; if this isn't a common symptom that someone recognizes I would start by splitting the problem.

Step on the brakes a few times till the rears lock then take a fitting off and see if they free up. (this will be messy , of course) If they instantly free up (I'm guessing you have an idea how long they stay clamped until they free on their own now) by pulling the fitting at the proportioning valve then the valve is your issue.

If they don't then it is probably in the line, somewhere. I am assuming the symptom is the same for each rear wheel here.

[big d's red67]

Just need to adjust the rod from the master to the booster.

[ksbrktracer]

Originally Posted by big d's red67

Just need to adjust the rod from the master to the booster.

Did that fix it ...... ? If so KooL .....!

[big d's red67]

Yes it did. Thanks for the help Tommy.