What is the Function of the Steering Linkage?

[SanBryce]

The function of the steering linkage is to transmit the force and motion output from the steering gear to the steering knuckles on both sides of the steering axle, causing the steering wheels to pivot. It ensures that the turning angles of the two wheels change in a specific relationship, minimizing relative sliding between the wheels and the ground during vehicle steering. The steering linkage primarily consists of the pitman arm, drag link, steering knuckle arm, left and right tie rod arms, and the tie rod. The drag link is made of a steel tube with enlarged ends. The ball joints at both ends comprise a ball stud, ball socket, spring seat, spring, and plug, connecting to the pitman arm and steering knuckle arm, respectively. The tie rod connects the left and right tie rod arms and consists of the tie rod body and threaded ends. Each end contains a ball stud, ball socket, and spring, among other components. The ends are threaded into the tie rod body with opposite threads—one right-handed and the other left-handed. By loosening the clamp bolt and rotating the tie rod body, the overall length of the tie rod can be adjusted to set the toe-in.