Close-up of red coil spring, radius arm bushing and ball joint o…

Close-up under a truck showing a red coil spring seated on the axle perch beside a track-bar or radius-arm end with a large brass-colored bushing sleeve and through-bolt. A greased ball-joint stud with a castellated nut and cotter pin sits above the knuckle, all coated in dirt, with the tire tread visible at right.

AI caption January 2006 · Photo 8 of 297