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POWER STEERING SYSTEMRODIUS 2005.07

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4610-00POWER STEERING SYSTEM

1. SPECIFICATION

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RODIUS 2005.07

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POWER STEERING SYSTEM

2. TIGHTENING TORQUE

3. SPECIAL TOOLS AND EQUIPMENT

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POWER STEERING SYSTEMRODIUS 2005.07

4610-00

4. OVERVIEWThe power steering system consists of pump, oil reservoir, rack and pinion gear. The power steering pump is a vane type and delivers hydraulic pressure to operate the power steering system. The pressure relief valve in pump controls the discharging pressure.The rotary valve in rack and pinion gear directs the oil from the power steering pump to one side of rack piston.The integrated rack piston converts the hydraulic pressure to linear movement.The operating force of rack moves the wheels through tie rod, tie rod end and steering knuckle.Even though the hydraulic pressure cannot be generated, a driver can steer the vehicle without power assist but it needs very high steering force.In this case, the operating force of steering wheel is conveyed to pinion, and the movement of pinion moves the rack through pinion gear combined to rack gear.

5. COMPONENTS

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RODIUS 2005.07

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POWER STEERING SYSTEM

1. COMPONENTS OF POWER STEERING ASSEMBLY

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POWER STEERING SYSTEMRODIUS 2005.07

4610-00

2. POWER STEERING GEAR BOX ASSEMBLY

The power steering gear consists of power cylinder and control valve.The power cylinder has cylinder, piston and piston rod. The control valve directs the oil to one end face of the piston to enhance the steering force.The control valve controls the directions and operations of power cylinder.Additionally, the safety check valve is installed so that the system can be operated manually when the system is defective.

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RODIUS 2005.07

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POWER STEERING SYSTEM

3. POWER STEERING PUMPThe vane type pump that is connected to engine by belt is used for the power steering system. This pump generates and controls a proper hydraulic pressure and flows by using the flow control valve and pressure relief valve.The flow control valve regulates the excessive amount of discharging oil. When the steering wheel is stationary or the oil circuit is blocked, the pressure relief valve returns the over pressurized oil to the oil reservoir.

4. OIL RESERVOIRThe oil reservoir sends the oil to the power steering pump and receives the oil from the power steering gear.The oil level in the reservoir depends on the steering wheel positions. therefore, measure the oil level when the steering wheel is positioned at straight ahead direction (neutral).

Steering pump Reservoir tank