NHTSA recall 91V221000
Wheels › Lugs/nuts/bolts/studs
Oshkosh HB Series and 1 more
Reported Dec 30, 199142 vehicles affectedOSHKOSH TRUCK CORPORATIONBuilt Aug 1, 1990 – Dec 1, 1991
The defect
The wheel stud used for the hubs on the rear-steer wheels has a diameter too small to handle the maximum recommended torque, and will suffer from a fatigue failure from the cyclic stresses of vehicle use and the torquing of the wheel nut.
The risk
Failure of one wheel stud can lead to subsequent failuresof all the studs on the hub, leading to separation of the wheel and tireassembly from a vehicle, resulting in loss of steering control and an accident.
The remedy
Replace the wheel stud with a newer, wider diameter wheel stud.