THESE VEHICLES WERE BUILT WITH AN IMPROPERLY PLUMBED BRAKE SYSTEM WHICH AFFECTS THE BRAKING ON THE REAR AXLE WHEN RUNNING EITHER BOBTAIL OR PULLING A TRAILER.
RiskTHIS CONDITION CAN AFFECT THE STOPPING ABILITY OF THE VEHICLE BECAUSE THE FRONT STEER AXLE BRAKES AND TRAILER'S BRAKES WOULD BE DOING MOST OF THE BRAKING. INCREASED STOPPING DISTANCES WOULD BE REQUIRED CAUSING ACCELERATED WEAR ON THE STEER AXLE AND THE TRAILER BRAKES.
FixNAVISTAR DEALERS WILL INSPECT VEHICLES AND REPAIR BY INSTALLING BRAKE LINES AND FITTINGS AS REQUIRED.