11-14-2022,
HELLO
I HAVE A 2016 389 THE TRACTOR PROTECTION VALVE LEAKS THROUGH THE EXHAUST PORT WHEN THE TRAILER BREAK IS RELEAST, SERVICE BREAKS APLYED AND TRUCK BREAKS SET.
ANY IDEA WHATS GOING ON???
I HAVE A 2016 389 THE TRACTOR PROTECTION VALVE LEAKS THROUGH THE EXHAUST PORT WHEN THE TRAILER BREAK IS RELEAST, SERVICE BREAKS APLYED AND TRUCK BREAKS SET.
ANY IDEA WHATS GOING ON???