SERVICE BRAKES, AIR:CONTROLS:FOOT CONTROL/VALVE
Dec 29, 1989
22,000 units potentially affected
The defect: HYDROGEN EMBRITTLEMENT OF SCREWS USED TO HOLD TOGETHER VALVE BODY CAUSES THE SCREWS TO BREAK OFF UNDER STRESS.
The risk: THE LOSS OF BRAKE VALVE INTEGRITY COULD CAUSE AN INCREASEIN STOPPING DISTANCE, OR LOSS OF BRAKING CONTROL IN AFFECTED TRAILERS. EITHERCONDITION COULD CAUSE AN ACCIDENT.
The remedy: MANUFACTURER WILL REPLACE VALVES WITH DIFFERENT BODY SCREWS.
MIDLAND BRAKE, INC.View on NHTSA.gov