Recall 80V052000
Parking Brake › Driveline › Air — Mack · reported 6 May 1980 · 9,666 vehicles potentially affected
What's wrong
ON CERTAIN VEHICLES, THE KNOB THAT OPERATES THE TRACTOR PARK VALVE MAY BREAK OFF, RENDERING THE VALVE INOPERABLE.
The fix
DEFECTIVE KNOBS WILL BE REPLACED WITH AN IMPROVED TYPE, WITHOUT CHARGE TO OWNER.
VEHICLE DESCRIPTION: TRUCKS.SYSTEM: SERVICE BRAKES; TRACTOR PARK VALVE CONTROL KNOB.CONSEQUENCES OF DEFECT: THE PURPOSE OF THE TRACTOR PARK VALVE IS TO ALLOW THEDRIVER TO APPLY THE TRACTOR SPRING EMERGENCY/PARKING BRAKE INDEPENDENTLY OF THETRAILER EMERGENCY PARKING BRAKES. IF THE KNOB IS BROKEN, THE TRACTOR PARKINGBRAKES CANNOT BE APPLIED. IF PARKED ON AN INCLINE AND LEFT UNATTENDED, VEHICLECOULD ROLL FREE AND CAUSE ACCIDENT AND INJURY.
Vehicles covered by this recall
Whether a particular car is affected and still unrepaired depends on its VIN — a model year being listed does not mean every car of that year is included. Check any VIN free on CarLogs, or at nhtsa.gov/recalls.
Is this car's recall fixed?
Recall repairs are free at any franchised dealer, for the life of the vehicle. A CarLogs report shows the recall status for a specific VIN as reported by the manufacturer — whether it's open or repaired, and whether the fix is available yet.
Source: NHTSA Office of Defects Investigation recall database. Look up another campaign →