NHTSA recall 90E029000 · Equipment
Service brakes, hydraulic › Foundation components › Drum › Drum
Reported Sep 5, 1990834 vehicles affectedROCKWELL INTERNATIONALBuilt Mar 1, 1989 – May 1, 1990
The defect
Hub mounting face diameter of drum may be improperly machined causing a line contact interference of the hub and drum assembly, loosening of the wheel nut and wheel stud fracture.
The risk
Fracture of all wheel studs could result in separation of the wheel set from the vehicle affecting vehicle control and stability.
The remedy
Replace drums with new drums machined to proper dimension.