I've had one brake where the s cam flipped which then kept the brake engaged and it was as ken suggested brake linings were getting thin(it was a lease maintained truck but I should have spotted it). I was able to back it off and flip it back into position. Next stop was truck repair shop down the street for linings. So far we have had good luck with self adjusters as long as they are greased regularly.Air tanks should be drained regularly as even with airdryer they still will get some moisture,the drains with pull cords make it easy to pop them when you are doing your walk around or fueling. Wetwilly glad no one was injured in incidents you describe. ABS, self adjusting slacks or the new to heavy trucks disc brakes do not eliminate the need for proper maintinence. To me air brakes are easier to work on and maintain.
Last edited by kb3csw; 01/25/2013 11:24 AM.
