Power steering ensures the lowest possible effort when steering a vehicle. The power steering system consists of an oil pump, a compensation tank and a pipeline. The oil pump is driven by the engine via a V-belt. The pump draws hydraulic fluid from the compensation tank and delivers it under high pressure to the valve block. The valve block is located on the steering gear. It is mechanically connected to the steering shaft and directs the fluid to the corresponding half of the working cylinder depending on the direction of the steering wheel deflection. There, the fluid exerts pressure on the piston of the toothed rack and thus maintains the steering wheel deflection movement. At the same time, the piston directs the fluid from the other half of the cylinder through the outlet hose back to the compensation tank.
16-valve engines are equipped with an additional cooling tube between the steering gear housing and the reservoir for better cooling of the hydraulic fluid.
(The material was created based on the website: mitsubishiman.ru)