5MilesBack
"DADDY"
Google f350 trak bar.
Solid front axle, leaf spring truck, so they weld a bracket to the axle housing and opposite side frame, then bolt a solid bar to the brackets. Every time the axle moves up or down the bar tries to shift the axle housing to the side, putting side load on the spring hangers and the bar mounts that were welded on. It tries to tear itself apart every bump in the road. Eventually the welds break and one end of the bar drops to the road.
Hmmm.....maybe that's the noise I keep getting these days every time I roll through a hole or something similar.