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NHTSA Campaign 79V059000

PARKING BRAKE:DRIVELINE:AIR

Issued by PACCAR, INCORPORATED · Reported Feb 23, 1979 · 2,620 vehicles affected

What's wrong

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.

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.

Vehicles affected by this recall

Make Model Year Units
KENWORTH W900 1978 2,620

Source: NHTSA Campaign 79V059000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.