Service brakes, hydraulic: Power assist: Hydraulic: Hoses, lines/piping, and fittings12/11/198989V224000
THE THROTTLE VALVE INSIDE THE HYDRAULIC BRAKE BOOSTER MAY DEFORM FROM BUILDUP OF HEAT AND PRESSURE AND CLOSE-OFF FLUID RETURN PORTS.
Consequence
THIS COULD CAUSE EXCESSIVE PRESSURE BUILDUP IN THEBOOSTER CAUSING THE BRAKES TO SELF APPLY WITH A SEVERE UNEXPECTED STOP. THISCONDITION COULD ALSO RESULT IN LOSS OF POWER STEERING ASSIST. EITHER CONDITIONCOULD RESULT IN AN ACCIDENT.
Remedy
REPLACE BRAKE BOOSTER ASSEMBLY.
SYSTEM: HYDRAULIC BRAKE BOOSTER.VEHICLE DESCRIPTION: TRUCK.
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