NHTSA Recall 79V059000
Filed by PACCAR Incorporated. Component: Parking Brake. Reported 1979-02-23. An estimated 2,620 vehicles are affected. Recall repairs are free at any authorized dealer.
Defect
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.
What the manufacturer will do
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.