In a rack and pinion system, what is connected to the steer shaft?

In a rack and pinion steering system, the component connected to the steer shaft is typically the rotary valve, which is designed to manage the flow of hydraulic fluid in power steering systems. The steer shaft transfers the driver's input to the steering mechanism, guiding the motion of the pinion that engages with the rack.

Understanding this mechanism, the steer shaft plays a crucial role in translating the rotational motion from the steering wheel into lateral movement of the wheels. The rotary valve works in conjunction with the steer shaft to enable smoother steering control, particularly in power-assisted rack and pinion systems.

The torsion bar, mentioned in your response, primarily serves as a stabilizing element in certain suspension systems rather than being directly associated with steering control in a rack and pinion setup.