The steering system consists of the following elements: a steering mechanism with steering rods, a steering column with a steering wheel, and an intermediate shaft that transmits torque from the steering column to the steering mechanism. A hydraulic booster is used to reduce the effort applied by the driver to the steering wheel.
The power steering consists of the following components: the power steering pump, the hydraulic fluid reservoir, and the rack mechanism. The power steering pump is a vane pump that provides pressure in the hydraulic system, which, acting on the piston of the hydraulic cylinder, creates additional force applied to the steering rack combined with the hydraulic cylinder. The pump is driven by a poly V-belt. The force in the steering mechanism is adjusted using a control valve, which plays the role of a tracking system. This force is then transmitted through the steering rods to the steering knuckles of the wheels.
(The article was borrowed from the website ChevyMan.ru)