OFFICIAL NHTSA RECALL
79V059000
Parking Brake:driveline:air
Reported Feb 23, 1979 · PACCAR, INCORPORATED
Summary
THE PARKING BRAKE VALVES MAY HAVE BEEN INCORRECTLY PIPED. IF THE PARKING BRAKE PIPING IS INCORRECTLY ROUTED, THERE IS NO WAY TO SET THE TRACTOR PARKING BRAKES INDEPENDENTLY OF THE TRAILER PARKING BRAKES. THIS COULD CAUSE THE PARKING BRAKES TO BACK OFF WHILE THE TRAILER AIR SUPPLY IS BEING CHARGED, CAUSING THE TRACTOR TO ROLL.
Consequence
Not supplied in the source record.
Remedy
TRAILER AIR SUPPLY WILL BE MOVED FROM THE DISCHARGE SIDE OF THE TRACTOR PARKING VALVE TO THE DISCHARGE SIDE OF THE COMBINATION PARKING VALVE. THIS SERVICE WILL BE DONE AT NO CHARGE.
Notes
VEHICLE DESCRIPTION: TRUCKS.SYSTEM: PARKING EMERGENCY BRAKES; AIR, VALVE, CONTROL.CONSEQUENCES OF DEFECT: IF THE TRACTOR AND TRAILER ROLL FREE, A VEHICLEACCIDENT AND PERSONAL INJURY MAY OCCUR.
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Vehicle entries in this campaign
This is model-level recall history. It does not confirm whether a particular VIN is affected or has received the repair. Check with NHTSA ↗