United States 77V051000
FRUEHAUF CORPORATION
The problem
THE INVOLVED VEHICLES DO NOT CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS". THE S121 BOGIE CONTROL AIR BRAKE SYSTEM WAS INSTALLED IN SUCH A WAY THAT THE REAR AXLE AIR CONTROL BYPASSED THE FRONT SKID CONTROL AIR MODULATOR VALVE. IMPROPER INSTALLATION WOULD ALLOW THE REAR AXLE TO LOCK UP IN A PANIC STOP.
What owners should do
THE DEALER WILL REROUTE THE BRAKE AIR CONTROL LINES TO THE REAR AXLE OF THE BOGIE THROUGH THE FRONT SKID CONTROL AIR SYSTEM TO COMPLY WITH THE SAFETY STANDARD.
Units 140