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 TRACTION SOLENOID EXHAUST CAN BE OBSTRUCTED DUE TO INADEQUATE DRAINAGE AND A BUILD-UP OF ROAD CONTAMINATION BETWEEN THE MOUNTING BRACKET AND THE SOLENOID HOUSING. THE OBSTRUCTED EXHAUST PREVENTS THE RELAY VALVE CONTROL AIR PRESSURE FROM VENTING AFTER A DIFFERENTIAL BRAKING TRACTION EVENT.
Consequence & remedy
Consequence: THIS CONDITION WOULD KEEP THE REAR AXLE SERVICE BRAKES APPLIED WITHOUT ANY BRAKE PEDAL MOVEMENT BY THE DRIVER INCREASING THE RISK OF A VEHICLE ACCIDENT.
Remedy: DEALERS WILL REMOVE THE SUSPECT VALVE AND INSTALL A NEW VALVE THAT HAS A MODIFIED SOLENOID HOUSING WHICH WILL ALLOW FOR SUFFICIENT DRAINAGE AND A NEW VALVE MOUNTING BRACKET WITH INCREASED HEIGHT TO REDUCE ENTRY OF CONTAMINATION.
VEHICLE DESCRIPTION: HEAVY DUTY CLASS 8 VEHICLES BUILT WITH A VOLVO 5.7 (12,500 LBS) FRONT STEERING AXLE. DUE TO HYDROGEN EMBRITTLEMENT, THE FRONT STEERING AXLE KING PINS COULD HAVE BROKEN DURING ASSEMBLY. CONTINUED OPERATION OF A VEHICLE WITH A BROKEN KING PIN COULD ALLOW THE PIN TO WORK LOOSE.
Consequence & remedy
Consequence: THIS CONDITION CAN CAUSE ERRATIC STEERING RESULTING IN LOSS OF STEERING CONTROL INCREASING THE POTENTIAL FOR A VEHICLE ACCIDENT.
Remedy: DEALERS WILL INSPECT THE VEHICLES FOR A BROKEN KING PIN AND REPLACE THE KING PINS IF BROKEN.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
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1996 Volvo Acl Problems, Complaints & Recalls | Skip That Year
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