Steering linkage connects the steering shaft from the steering wheel to control the wheels on the road. All steering designs have adjustable tie rod assemblies that connect to the steering knuckles.
Parallelogram Steering. The parallelogram system is also called a pitman arm or recirculating ball system.
Rack and Pinion Steering. A rack and pinion system commonly works in conjunction with struts to reduce space and weight. The rack, a flat piece with teeth, is connected to the tie rods. The pinion is connected to the steering shaft from the steering wheel. As the operator turns the steering wheel, the pinion turns, moving the rack to turn the vehicle.