United States 79V123000
IVECO TRUCK OF N.A., INC.
The problem
THE INVOLVED VEHICLES DO NOT CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS". DUE TO THE USE OF A LOAD PROPORTIONING VALVE IN THE BRAKE SYSTEM, THE BRAKE ACTIVATION AND RELEASE TIME IN AN UNLOADED CONDITION, MAY NOT MEET THE REQUIREMENTS. IN ADDITION, A DOUBLE CHECK VALVE REQUIRED ON A TWO AIR TANK SYSTEM WAS INADVERTENTLY OMITTED.
What owners should do
THE LOAD PROPORTIONING VALVE WILL BE REMOVED AND THE SYSTEM WILL BE "REPLUMBED" IN ORDER TO MEET SAFETY STANDARD REQUIREMENTS.
Units 63