SsangYong Korando III (2010 year). Service manual — part 246

12-5

0000-00

3. DIFFERENCES BETWEEN HPS AND EPS

HPS

EPS

1

Crankshaft pulley (DDU)

2 Auto

tensioner

3 Tensioner

pulley

4 Vacuum

pump

5

A/C compressor pulley

6 Alternator

pulley

7

Water pump pulley

8

No.1 idle pulley

9

No.2 idle pulley

10

Power steering pump

-

HPS (Hydraulic Power Steering)

EPS (Electric Power Steering)

12-6

4. MAJOR CHANGES

1) Steering Heating System

Steering wheel heating unit

Old

New

The steering wheel heated wire and the heating unit are
installed in the steering wheel assembly.

Lower switch cluster

Old

New

The steering wheel heating switch has
been added on the lower switch cluster.

Specifications

▶

Description

Specification

Power consumption

Below 95W

Rated voltage

12V

Operating voltage

9V~16V

Rated current

6±2.0A

Steering wheel

heating unit

Steering wheel

heating switch

12-7

0000-00

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.

12-8

Installation of steering

gear box and pipe

Installation of pipe

Installation of reservoir and hose

Installation of power steering pump

and pipe

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 pipe

Supply pipe