VEHICLE DESCRIPTION: CLASS 8 HEAVY DUTY TRUCKS. THE AIR SUSPENSION CONTROL VALVE SUPPLY LINE WAS NOT PLUMBED THROUGH AN AIR PRESSURE PROTECTION VALVE. IN THE EVENT OF A FAILURE, THERE WOULD BE LOSS OF AIR PRESSURE IN THE 'B' SYSTEM AIR RESERVOIR THAT SUPPLIES AIR PRESSURE FOR THE FRONT STEER AXLE BRAKES.
Consequence & remedy
Consequence: THIS CONDITION WOULD RESULT IN INCREASED STOPPING DISTANCES.
Remedy: DEALERS WILL INSTALL THE NECESSARY AIR PRESSURE PROTECTION VALVE.
THE WRONG BALL SOCKET ASSEMBLY WAS USED TO ATTACH THE STEERING ARMS TO BOTH THE STEERING DRAG LINK AND THE STEERING RAM ASSIST CYLINDER, RESULTING IN A BINDING CONDITION.
Consequence & remedy
Consequence: THIS CONDITION CAN CAUSE THE BALL SOCKET TO FATIGUE, INCREASING THE POTENTIAL FOR LOSS OF STEERING CONTROL AND AN ACCIDENT.
Remedy: DEALERS WILL REPLACE THE BALL SOCKET ASSEMBLY ON THE AFFECTED VEHICLES.