Brake Pull

It my be the Proportioning Valve. Look at the brake lines from master or abs. They will all go into this. It sounds like it it's working.

Tonight, I bled both sides again, hooked up to the computer and let it run through a bleed test to try and reset the ABS valves and rechecked the slides n both calipers. Both were working fine. Since the pull is still going to the right, I feel it is the left caliper so I checked to make sure both pistons in the left caliper were coming out equally and they were.

Still a pull.

I plan on replacing AGAIN the left caliper tomorrow. I did not show any codes reference the ABS hydraulic unit.

I don't know if the steering damper or track bar might have something to do with it? Any ideas?

Build Date is 03/02

5/15/07
Obtained another caliper, but after having checked both calipers and they appeared to be working properly, I am reluctant to replace it just because that is what you should do on th esymptom. The TSB test failed, but their answer is to replace the caliper assemblies which I already did.

Trying to think outside the box, I thought I would flip flop the front tires with each other (can't diagonally cross because of rim issues and would have to remount.

Took it out for test drive and braking was straight. Road conditions were changed because it was raining.

Drove home and 20 miles later, the pull started again.

05/16/07
Drove to work in the morning. Dry roads and was braking straight again. Within 11 miles, it was pulling right again.

After work, drove home and braked straight all the way home. (It was raining all the way.)

***Researching on the internet at lunch break, I read a year old post on a different forum I came across which they guy resolved the problem when the mechanic he finally took it to replaced the right wheel hub that was clicking as well as the lower ball joint.

I had checked my ball joints and they are tight. I do get a click on the right side, but it's coming from the locking hub.

My question to all is, trhinking outside the box, could it be the sealed wheel hub assembly causing the problem? Maybe when it heats up? Hopefully tomorrow will be dry so I can see if it remains braking straight.

I have a F350 crew diesel and had the same problems. I took my truck in on many occasions to the dealer and none of them coud fix it, just cost me money. I tore down the brakes myself and found two issues. First ball joints were shot, so I replaced them. Second, The brake caliper slider pins on one side were very stiff and corroded. I replaced the entire brake caliper braket and slide pins. Wow, no more pull, straight as an arrow. Im so glad I paid money to proffesional mechanics to not find these simple issues.