PARKING BRAKE:DRIVELINE:AIR
Feb 20, 1991
31 units potentially affected
The defect: IMPROPER PARK BRAKE CONTROL VALVES MAY HAVE BEEN INSTALLED; THE SUSPECT VEHICLE HAVE DISK BRAKES WITH PARK BRAKE VALVE DESIGNED FOR DRUM BRAKES.
The risk: TRUCKS LEFT WITH PARK BRAKES ENGAGED COULD BEGIN TO ROLLAFTER THE DISK BRAKES COOLED, AND COULD RESULT IN A VEHICLE CRASH WITHOUTWARNING.
The remedy: REPLACE CONTROL VALVE WITH THE CORRECT DISK BRAKE VALVE.
VOLVO GM HEAVY TRUCK CORPView on NHTSA.gov