brakes locking....suggestions?
The past few times I've towed my new Jayco 26BH, the trailer brakes to lock up. I'm towing with a Silverado with a P3 controller. The day I picked up the trailer, I set the controller voltage to...
Forum Discussion
Just picked it up, so new to you and ask if bought used or is it brand new, as
that makes a difference in forensics of why it is locking up
Just some things that might be the cause
Brake fluid and some oils when contaminated on friction materials can cause the
shoes to bite hard and lock up. Know that is weird, but that is in the book but
never experienced that
Of course rust, but not again in a couple weeks...unless you have it stored in
a high humidity location and/or salts got on the cast iron....of course assume
electric shoe/drum brakes and not some newer setups with disc on their trailer brakes
Adjustment. Since shoe/drum has a self wedging (they call it self energizing, etc)
If out of adjustment, the wedging action is exacerbated by the shoes having to
move a larger distance, there fore the angle of attack is high to cause it to bite
very hard and lock up
Controller and yes dial it back all the way with no boost, etc and test it
I also have a P3, have no problems and love it.
You have a Silverado, so the best brake pedal switch as mine (assume GM hasn't
change it since my 1996 Sub).
Properly setup, my Sub can stop both trailer and TV WITHOUT moving the brake pedal
far enough to develop braking on the TV (zero PSI in the master cylinder).
My setup has the trailer lead the TV in braking, so smooth and seamless
Tell us a bit more about the trailer. New, used and if used, when was the brake
system checked
that makes a difference in forensics of why it is locking up
Just some things that might be the cause
Brake fluid and some oils when contaminated on friction materials can cause the
shoes to bite hard and lock up. Know that is weird, but that is in the book but
never experienced that
Of course rust, but not again in a couple weeks...unless you have it stored in
a high humidity location and/or salts got on the cast iron....of course assume
electric shoe/drum brakes and not some newer setups with disc on their trailer brakes
Adjustment. Since shoe/drum has a self wedging (they call it self energizing, etc)
If out of adjustment, the wedging action is exacerbated by the shoes having to
move a larger distance, there fore the angle of attack is high to cause it to bite
very hard and lock up
Controller and yes dial it back all the way with no boost, etc and test it
I also have a P3, have no problems and love it.
You have a Silverado, so the best brake pedal switch as mine (assume GM hasn't
change it since my 1996 Sub).
Properly setup, my Sub can stop both trailer and TV WITHOUT moving the brake pedal
far enough to develop braking on the TV (zero PSI in the master cylinder).
My setup has the trailer lead the TV in braking, so smooth and seamless
Tell us a bit more about the trailer. New, used and if used, when was the brake
system checked
