power steering rack bmw
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32106769075 BMW 325xi LHD Hydraulic Power Steering Rack
The Hydraulic Power Steering Rack is a hydraulic device that uses engine power to change the direction of the vehicle. The engine drives the oil pump to generate hydraulic pressure, which acts on the power cylinder piston, causing the pinion to apply auxiliary force to the rack. The amount of auxiliary force is related to the pressure of the piston. Therefore, when more steering assistance is required, the hydraulic pressure must be increased. The hydraulic pressure is regulated by a control valve connected to the steering shaft.
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