SsangYong Actyon Sports II. Manual — part 163

12-20

Measure the oil pressure with the gauge valve

fully open.

7.

Pressure at no load

3 to 5 bar

If the pump pressure is in specified range, the

pump is normal. If not, replace the power

steering pump

8.

Turn the steering wheel right or left until it

stops with the engine idling and valve fully

open.

9.

Oil pressure

78 to 83 bar

To prevent the internal damage, do not close

the gauge valve for over 10 seconds.

Keep the oil temperature at proper range.

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12-21

4610-01

1. SYSTEM DESCRIPTION

The power steering has been designed to make the wheel move more easily than in a manual steering

system. The hydraulic power assists the process utilizing hydraulic fluid. The fluid increases pressure in

the power steering pump and aids the movement of the steering mechanism. The power steering

system consists of pump, oil reservoir, rack and gear box. The power steering pump is a vane type and

delivers hydraulic pressure to operate the power steering system. The pressure relief valve in the pump

controls the discharging pressure. The rotary valve in the rack and the pinion gear directs the oil from the

power steering pump to one side of the rack piston. The integrated rack piston converts the hydraulic

pressure to linear movement. The operating force of the rack moves the wheels through the tie rod, the

tie rod end and the 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 the steering wheel is conveyed to the pinion, and the movement of the pinion moves

the rack through the pinion gear combined to the rack gear.

12-22

2. SYSTEM LAYOUT

The steering pump is driven by the engine power through a belt. This pump circulates the power steering

oil from the reservoir -> steering pump -> oil supply pipe -> steering gear box -> oil return pipe ->

reservoir to perform steering operations

Return hose & tube

Steering pump &

reservoir

High pressure hose

Linkage gear box

Steering wheel

Lower shaft

Column & shaft

Return hose & tube

Steering pump &

reservoir

High pressure hose

Linkage gear box

Steering wheel

Lower shaft

Column & shaft

HPS model

SSPS model

12-23

4610-01

Oil Flows during Right Turn

▶

Steering pump

To piston pipe

in

From piston pipe

Piston pipe

Piston

Oil reservoir