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NHTSA Recall 90V121000

Filed by Ford Motor Company. Component: Service Brakes, Air. Reported 1990-06-25. An estimated 15,260 vehicles are affected. Recall repairs are free at any authorized dealer.

Defect

SECONDARY SERVICE RESERVOIR AIR CHECK VALVES MAY NOT SEAT PROPERLY DUE TO A MECHANICAL INTERFERENCE CONDITION BETWEEN A CIRCULAR BRASS GUIDE AND THE WALL OF A CYLINDRICAL FERRULE IN WHICH THE BRASS GUIDE IS INTENDED TO MOVE FREELY.

Risk

IN THE EVENT OF PRESSURE LOSS IN THE SUPPLY RESERVOIR,A DEFECTIVE CHECK VALVE WOULD ALLOW PRESSURE EQUALIZATION BETWEEN PRIMARY ANDSECONDARY SERVICE RESERVOIRS, PRESENTING THE POTENTIAL FOR LOSS OR ABSENCE OFFRONT BRAKING ABILITY, WHICH COULD CAUSE LOSS OF CONTROL AND AN ACCIDENT.

What the manufacturer will do

INSTALL REVISED DESIGN SECONDARY SERVICE RESERVOIR CHECK VALVE COMPONENTS.

Notes

SYSTEM: AIR PRESSURE CHECK VALVES.VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS AND CHASSIS CABS.

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Vehicles covered by this recall