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Mack R Series Recall 80V052: Parking Brake:Driveline:Air

NHTSA campaign 80V052, reported May 6, 1980, 9,666 vehicles potentially affected.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 80V052MACK TRUCKS, INCORPORATED
Component
PARKING BRAKE:DRIVELINE:AIR
Problem
ON CERTAIN VEHICLES, THE KNOB THAT OPERATES THE TRACTOR PARK VALVE MAY BREAK OFF, RENDERING THE VALVE INOPERABLE.
Risk
Remedy
DEFECTIVE KNOBS WILL BE REPLACED WITH AN IMPROVED TYPE, WITHOUT CHARGE TO OWNER.
Notes
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.

Affected vehicles

Mack MC Series1980
Mack R Series1980
Mack U Series1980