97 f250 crew cab short bed
right rear locks intermittently during barely above normal stop pedal pressure. In fact, every other vehicle I have ever driven allowed significantly harder stops with no tire slide or anti-lock activation. The anti-lock on this truck may or may not activate if I let the tire locked up more than a second or so. I HATE this differential anti-lock setup! STUPID!!
Here's the embarrassing part. I always think people who just start replacing parts to solve a problem are ill advised to do so. Well, that's what has happened to me.
Before I knew of this locking brake problem, I had 2 sticking parking brake cables. Had them replaced. Had the rear brake shoes and drums replaced since one was shot from brake cable hanging up. That's when I noticed the right rear locked up first time. I had just bought the truck though, so it may have done it before too.
When the locking issue was noticed, a leaking poorly done steel brake line repair was found and fixed. To bleed the brakes, one wheel cylinder was replaced due to a seized, then broken bleeder. The axles were pulled to make sure of the brake adjustment. The right rear still locked intermittently. 10-12 stops it might be fine, then it will happen again. The master cylinder was replaced next, and the little bit of rust scale around the booster was cleaned. No contamination found in the brake fluid. It didn't help at all. The right rear brake shoes were adjusted farther away. It still locks that wheel.
ANY IDEAS PLEASE??
NOTICE!!! If you don't want to read this whole thread, you don't need to, as the problem has been solved! The main thing that caused my intermittent problem was out of round rear brake drums. Brand new, but out of round! I spent weeks and many dollars at the wrong shop. A different shop found the problem in short order, and it's 100% good now.