Quote Originally Posted by CPPAaron View Post
Good Morning,

On the proportional valve there is not an adjustment. I would say most likely loosing up the adjuster on the rears would help. sounds like they might be on the tight side.
Hi aaron,

I am assured the drums are adjusted correctly.
Front disc were working fine with seized rear drum cylinders, now replaced cylinders back drums are locking up when brakes pressed.
Either wrong cylinders installed or faulty proportioning valve?
Do the proportioning valves stick/fail often?

Dave