Service brakes, hydraulic: power assist: hydraulic: hoses, lines/piping, and fittings
- Component
- Service brakes, hydraulic: power assist: hydraulic: hoses, lines/piping, and fittings
- Manufacturer
- NAVISTAR INTL CORP.
- Vehicles affected
- 10,459
- Reported to NHTSA
- 1989-12-11
- Owners notified
- 1989-12-07
Defect description
THE THROTTLE VALVE INSIDE THE HYDRAULIC BRAKE BOOSTER MAY DEFORM FROM BUILDUP OF HEAT AND PRESSURE AND CLOSE-OFF FLUID RETURN PORTS.
Safety risk
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.
Manufacturer remedy
REPLACE BRAKE BOOSTER ASSEMBLY.