Vehicle category: heavy trucks.system: steering; drag link 1-3/4 inch ball studs, part no. 235 and powersteering valve and drag link assembly, series G-21 (with 235 ball stud), partno. 40361.Consequences of defect: this failure could cause loss of steering controlwithout warning and, possibly, an accident.note: vehicles with defective ball studs should not be driven on rough roads,subjected to unnecessary stops, driven at high speeds or impacted with curbs.the owner should inspect his vehicle immediately for the presence of thedefective ball stud. The potentially defective ball studs may be identified byinspecting the face of the thread end. They will have a center drill hole thatintersects the cotter pin holes. Non-defective studs have a dimple on the facethat does not intersect the cotter pin holes.