Reply to "Brakes locking up"

From what I understand this syndrome is caused by the master cylinder piston not returning all the way to the back of the master cylinder and is usually caused by the adjustable push rod between the booster and master length being too long. It usually has to be off quite a bit so that the piston covers the brake fluid intake/vent holes that feed down into the piston. With the holes covered and the brake fluid expands from heat the only place the fluid can expand is to the caliper pistons, moves them and cleverly applies the brakes. When everything cools of the brakes relax. Larry is correct in that you should be able to tell if the rod is too long by unbolting the master from the booster. If the rod is too short then there will be too much free play in the pedal before the brakes start.

Mike