OK, here is my brake problem. Nov 76' FJ40.
New to me vehicle, PO had rear axle with GM disks set up, but not hooked up.
I ran new lines from front, through a porportion valve and to rear calipers. Bled and set up. They worked good for a week and seemed to stop well although the rears do lock up before the fronts no matter how I had the valve set.
Then I had an issue of the rear callipers tightening and seizing after I drove for about 5 minutes. I could crack the bleeders and let the pressure off and it is good for another 5 minutes if I try and not use brakes. Seems as though if I adjust the valve somewhere in the middle the brakes wont "seize" but the rears do lock up too good with any sharp braking at all, even just approaching a down hill corner faster than a jogging pace.
I am guessing that the fluid is getting past the valve by me applying the pressure at the brake pedal and it is not able to return through the valve??? But when I adjust the valve to allow the pressure to return to the master...It is not restricted enough to soften the rear calipers power.
Any suggestions? Thanks for passing the knowledge.
New to me vehicle, PO had rear axle with GM disks set up, but not hooked up.
I ran new lines from front, through a porportion valve and to rear calipers. Bled and set up. They worked good for a week and seemed to stop well although the rears do lock up before the fronts no matter how I had the valve set.
Then I had an issue of the rear callipers tightening and seizing after I drove for about 5 minutes. I could crack the bleeders and let the pressure off and it is good for another 5 minutes if I try and not use brakes. Seems as though if I adjust the valve somewhere in the middle the brakes wont "seize" but the rears do lock up too good with any sharp braking at all, even just approaching a down hill corner faster than a jogging pace.
I am guessing that the fluid is getting past the valve by me applying the pressure at the brake pedal and it is not able to return through the valve??? But when I adjust the valve to allow the pressure to return to the master...It is not restricted enough to soften the rear calipers power.
Any suggestions? Thanks for passing the knowledge.