Steering mechanism - principle of operation. The steering mechanism is used to transmit the steering wheel movements to the steering knuckle. The steering mechanism consists of a steering wheel , the steering shaft, steering gear and steering arm. Steering wheel rotation, and with it the steering shaft causes movement of the steering arm via the steering gear, which is transferred to the crossover mechanism. When a rigid front axle is used on a vehicle, The steering arm pulls or pushes the longitudinal steering rod, this in turn causes the steering knuckle to rotate. At the same time, the steering knuckle causes the rotation of the second steering knuckle via the transverse steering rod. In the case of independent front wheel suspension, the steering arm most often acts directly on the transverse track rod, by sliding it to the right or left, and this in turn causes the turning points to rotate via the steering levers. Regardless of the above, the steering gear transmits much more force to the steering knuckle than this, which the driver holds against the steering wheel while turning it.