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NHTSA Campaign 91V221000

WHEELS:LUGS/NUTS/BOLTS/STUDS

Issued by OSHKOSH TRUCK CORPORATION · Reported Dec 30, 1991 · 42 vehicles affected

What's wrong

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.

Consequence

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.

Remedy

REPLACE THE WHEEL STUD WITH A NEWER, WIDER DIAMETER WHEEL STUD.

Vehicles affected by this recall

Make Model Year Units
OSHKOSH HB SERIES 1991 42
OSHKOSH MULTI-PURPOSE 1991 42

Source: NHTSA Campaign 91V221000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.