Wheels: lugs/nuts/bolts/studs
- Component
- Wheels: lugs/nuts/bolts/studs
- Manufacturer
- FORD MOTOR COMPANY
- Vehicles affected
- 1,520,000
- Reported to NHTSA
- 1998-05-13
- Owners notified
- 1998-07-20
Defect description
VEHICLE DESCRIPTION: MULTI-PURPOSE VEHICLES AND LIGHT DUTY PICKUP TRUCKS. THE LUG NUTS ON THESE VEHICLES MAY NOT CREATE SUFFICIENT CLAMP LOAD ALLOWING WHEEL MOVEMENT IN RELATION TO THE HUB/ROTOR MOUNTING SURFACE.
Safety risk
THIS CAN RESULT IN THE LOOSENING OF LUG NUTS, STUD FATIGUE FAILURE, AND THE POTENTIAL FOR A WHEEL SEPARATION FROM THE VEHICLE, INCREASING THE RISK OF A VEHICLE CRASH.
Manufacturer remedy
OWNERS OF THESE VEHICLES WILL BE RECEIVING TWO NOTIFICATIONS. THE FIRST NOTIFICATION, WHICH BEGAN IN MAY 1998, WILL PROVIDE AN INTERIM REPAIR PROCEDURE UNTIL PARTS BECOME AVAILABLE. THIS INTERIM PROCEDURE CAN BE COMPLETED BY OWNERS OR THEIR DEALERS. IT SPECIFIES THAT THE LUG NUT TORQUE MUST BE VERIFIED TO BE 100 LBS. THEN THE LUG NUTS NEED TO BE TIGHTENED AN ADDITIONAL 1/8 TO 1/4 TURN MORE. THERE WILL BE A SECOND OWNER NOTIFICATION, WHICH IS EXPECTED TO BEGIN JULY 20, 1998, UNDER WHICH DEALERS WILL INSPECT THE WHEEL STUDS AND REPLACE THE WHEEL LUG NUTS.