Axle

One end of each axle is attached to the front wheel spindle (3105) and a radius arm, and the other end is attached to a frame pivot bracket on the opposite side of the vehicle.

On F-Super Duty, the single I-beam axle is held to the leaf springs by spring seats and U-bolts and nuts. The front wheel spindle is held in place on the axle by a spindle pin, which pivots on bronze bushings that are pressed into the upper and lower eyes of the spindle. A thrust bearing is installed between the lower spindle eye and the axle. This bearing supports the load of the axle.

On F-150, F-250 and F-350, the front wheel spindle is held in place on the axle by the tapered dowels of upper and lower ball joints, which are pressed into the spindle.