Service brakes, hydraulic: Foundation components: Master cylinder02/11/198686V025000
THE RUBBER VALVE OF THE BRAKE AIR MASTER (BOOSTER) MAY TEAR DUE TO HIGH FLUID PRESSURE DEVELOPED DURING SIMULTANEOUS APPLICATION OF BOTH THE SERVICE AND REAR WHEEL PARKING BRAKE. CONSEQUENCE OF DEFECT: THE DAMAGE RUBBER VALVE RESULTS IN LOSS OF SERVICE BRAKE CAPACITY WHICH MAY LEAD TO AN ACCIDENT.
Remedy
REPLACE BRAKE AIR MASTER (BOOSTER).
SYSTEM: BRAKE BOOSTER.VEHICLE DESCRIPTION: CAB OVER ENGINE TRUCKS.
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