AN ERROR IN THE INSTALLATION OF THE BRAKE AIR LINE RESULTED IN CONNECTING THE FRONT AND REAR AIR BRAKE SUPPLY TANKS IN SERIES WITHOUT A CHECK VALVE BETWEEN THEM. IF AN AIR LEAK DEVELOPS IN EITHER THE FRONT OR REAR BRAKE SYSTEM, BOTH TANKS WOULD BE DEPLETED OF AIR CAUSING BOTH BRAKE SYSTEMS TO BE INOPERATIVE. CONSEQUENCE OF DEFECT: A TRUCK WITHOUT INDEPENDENT FRONT AND REAR BRAKE SYSTEMS IS IN NONCOMPLIANCE WITH FMVSS 121, AIR BRAKE SYSTEMS, WHICH PROVIDES SUCH A SYSTEM TO REDUCE HIGHWAY ACCIDENTS.
Manufacturer remedy
REWORK PLUMBING FOR BRAKE LINES TO ENABLE FRONT BRAKE SYSTEMS TO BE INDEPENDENTLY FILLED AND PROTECTED FROM REAR BRAKE SYSTEM.
THE STEERING PITMAN ARM CROSS BOLTS ON THE INVOLVED VEHICLES MAY NOT HAVE BEEN SUFFICIENTLY TIGHTENED TO PROPERLY SECURE THE ARM TO THE STEERING GEAR SHAFT. THE BOLT MAY LOOSEN FURTHER DURING CONTINUED VEHICLE OPERATION.
Manufacturer remedy
DEALER WILL INSTALL THE PROPER CAPSCREW NUT AND WASHER TO SECURE THE ARM CROSS BOLT TO THE STEERING GEAR SHAFT. THIS WILL BE PERFORMED FREE OF CHARGE.
Parking brake: conventional: mechanical: linkage and cable
Manufacturer
OSHKOSH TRUCK CORPORATION
Vehicles affected
129
Reported to NHTSA
1981-11-06
Owners notified
1981-10-30
Defect description
THE PARKING BRAKE LINKAGE MAY NOT EXERT SUFFICIENT FORCE TO THE PARKING BRAKE SYSTEM TO HOLD THE VEHICLE WHEN PARKED ON A SLOPE.
Manufacturer remedy
PARKING BRAKE LINKAGE KITS WILL BE MADE AVAILABLE TO REPAIR THE DEFECT.
Owner complaints
A complaint is one person's report to a federal agency. It is not a finding.
No complaints recorded for this model year.
Safety recall repairs are provided free of charge by franchised dealers, regardless of vehicle age or mileage. This page displays aggregated data for the model year. To check recall status for a specific vehicle, search its VIN at nhtsa.gov.