Where Is The Control Valve Located In A Rack And Pinion Power Steering System

A rotary vane pump see diagram below provides the hydraulic power for the steering.

Where is the control valve located in a rack and pinion power steering system.

This pump is driven via a belt and pulley. When the gauge valve is closed the pressure reading is within specifications. In all these types of power steering systems the pump delivers fluid to the control valve. The control valve opens a pressurized flow to and from the hydraulic cylinder.

You ll find a cylinder and piston on the rack too. When the power steering control valve breaks it will display a few common symptoms including a smell of burning power steering fluid a whining noise while turning or power steering fluid leaking from. It has a set of retractable vanes that turn inside an oval chamber. The rack and pinion steering gear hydraulic cylinder is part of the rack gear and the control valve is connected by a torsion bar to the steering shaft.

A power steering pressure gauge is being used to diagnose a system problem on a rack and pinion system. In a power steering system the design of the rack is a little different. When the wheels are turned all the way left a pressure reading less than specification is found. As the pinion rotates it then rotates the rack which is also connected to it.

Technician a says that the pump pressure regulator is bad. The use of a variable rack still using a normal. Therefore the steering wheel rotations move the pinion and then the rack in that order.