THE INVOLVED VEHICLES WERE ASSEMBLED WITH INCORRECT PLUMBING OF THE COPPER BRAKE APPLICATION VALVE SUPPLY AIR LINES. THIS CONSTITUTES A NON-COMPLIANCE TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO 121, AIR BRAKE SYSTEMS. AS A RESULT, AIR COULD LEAK FROM THE REAR BRAKE SYSTEM.
THE INVOLVED VEHICLES WERE ASSEMBLED WITH INCORRECT PLUMBING OF THE COPPER BRAKE APPLICATION VALVE SUPPLY AIR LINES. THIS CONSTITUTES A NON-COMPLIANCE TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO 121, AIR BRAKE SYSTEMS. AS A RESULT, AIR COULD LEAK FROM THE REAR BRAKE SYSTEM.