Defect summary
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).
Notes
SYSTEM: BRAKE BOOSTER.VEHICLE DESCRIPTION: CAB OVER ENGINE TRUCKS.
Source: NHTSA ODI recalls file, campaign 86V025000. Text as published by NHTSA.