WheelsRecall 77V-096 · Mack vehicles
MACK TRUCKS, INCORPORATED recall 77V-096 covers 825 Mack vehicles for a wheels problem, reported to NHTSA on June 17, 1977.
Source: NHTSA recall 77V096000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
THE FRONT WHEEL RIM CLAMP STUDS, INSTALLED ON THE INVOLVED VEHICLES, MAY NOT HAVE BEEN MANUFACTURED CORRECTLY, CAUSING A BRITTLE CONDITION IN THE THREAD ROOT AREA. THE STUDS COULD EVENTUALLY CRACK AND BREAK WHEN WHEEL NUTS ARE TIGHTENED TO SPECIFICATIONS.
The fix
THE DEALER WILL REPLACE ALL SUSPECT FRONT WHEEL STUDS, WITHOUT CHARGE TO OWNER.
VEHICLE DESCRIPTION: HEAVY TRUCKS.SYSTEM: WHEELS; STUDS.CONSEQUENCES OF DEFECT: WHEEL STUD FAILURE COULD CAUSE A LOOSENED TIRE ASSEMBLYAND IMPAIRED VEHICLE CONTROL. FAILURE OF MORE THAN ONE STUD COULD CAUSESEPARATION OF THE TIRE AND RIM ASSEMBLY, CAUSING LOSS OF VEHICLE CONTROL AND ANACCIDENT.NOTE: DRIVER MAY BE ALERTED TO THE CONDITION BY A WOBBLE OR VIBRATION IN THEAFFECTED WHEEL.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.