NHTSA Campaign Id 77V180000; Date: Oct. 17, 1977
1975 International Harvester Cargostar Series; 1976 International Harvester Cargostar Series; 1977 International Harvester Cargostar Series; 1975 International Harvester Conco Series; 1976 International Harvester Conco Series; 1977 International Harvester Conco Series; 1975 International Harvester Fleetstar Series; 1976 International Harvester Fleetstar Series; 1977 International Harvester Fleetstar Series; 1975 International Harvester Loadstar Series; 1976 International Harvester Loadstar Series; 1977 International Harvester Loadstar Series; 1975 International Harvester S Series; 1976 International Harvester S Series; 1977 International Harvester S Series; 1975 International Harvester Transtar Series; 1976 International Harvester Transtar Series; 1977 International Harvester Transtar Series
Component: Wheels:multi Piece
Manufactured by: International Harvester
Affected Units:: 21,980
The deficiency exists in the front axle forged aluminum hubs. The deficiency which is in the barrel section between the inner and outer bearing, may result in cracks which could lead to hub failure. When hub failure occurs, the separated hub is retained on the axle spindle by the wheel bearing and adjusting nut.
The dealer will replace the forged aluminum hubs with steel hubs, at no charge.
Vehicle description: medium and heavy trucks. System: suspension; wheels, front axle hubs. Consequences of defect: continued vehicle operation could allow the separatedhub with the wheel and tire to become disengaged from the vehicle. Thiscondition could result in loss of vehicle control and an accident. Note: advance failure warning will occur in the form of wheel bearing lubeleaks on the wheel rim or tire. In the event hub failure occurs during vehicleoperation, warnings to the operator will occur in the form of an audible sound,wheel vibration and the steering feel of a severely underinflated tire.
Date Owners notified by Manufacturer: Nov 11, 1977
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