Construction of the steering system. General structure and purpose of the steering system. The task of the steering system is to enable the change of the car's direction of movement by appropriate setting of its steered wheels. The front wheels are steered on most cars and tractors. If the car turns, all its wheels should roll in arcs of admittedly different radii, but with a common center of curvature, known as the turning center. The fulfillment of this condition guarantees that the wheels roll without skidding. It follows from here, that the steering angles of the front wheels cannot be the same. Inner circle, i.e.. left when turning left and right when turning right, rolls in an arc with a smaller radius than the outer circle, so when turning to the right, the right wheel must be turned more than the left wheel. In sum, the front wheels in a bend only roll without skidding on the road, when each of them is twisted by a different angle: internal for a bigger one, external with a smaller one. To meet these requirements, The steering system consists of two basic mechanisms: the steering linkage, ensuring the correct alignment of both steered front wheels when driving in a curve, and the steering mechanism, transmitting the rotation of the steering wheel through the individual components of the mechanism to the front wheels.