rack SSANGYONG KORANDO 2013 Owner's Guide

2. TIGHTENING TORQUE
Item Tightening torque Remark
1. Power steering reservoir mounting bolt 8.8 to 13.7 Nm 12 mm x 2 EA
2. Power steering
pumpUpper mounting bolt/nut
13 mm x 1 EA
Lower mounting bolt
12 mm x 2 EA
3. Oil pipe Eye bolt (pump side) 53.9 to 63.7 Nm 22 mm
Steering gear box side nut 31.4 to 37.2 Nm 17 mm
4. Oil pipe bracket mounting nut 6.8 to 10.8 Nm 10 mm
5. Tie rod end lock nut 44.1 to 53.9 Nm 17 mm
6. Tie rod nut 63.7 to 78.4 Nm 22 mm
7. Lower shaft Lower mounting bolt
(gear box side)17.6 to 24.5 Nm 12 mm
Upper mounting bolt (column
side)17.6 to 24.5 Nm 12 mm
8. Column shaft Lower mounting bolt 19.6 to 24.5 Nm 12 mm
Upper mounting nut 19.6 to 24.5 Nm 12 mm
9. Steering wheel nut 39.2 to 49.1 Nm 22 mm
10. Loosened gear box mounting bolt/nut Left: 98.0 to 127.4 Nm 17 mm
Right: 88.3 to 107.9 Nm 17 mm
11. Heat shield mounting bolt 8.8 to 13.7 Nm 12 mm x 2 EA

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.

4610-00
1. SPECIFICATION
Unit Description Specification
System operationOperating type Motor driven power steering system
Operating temperature
Rated voltage 12 V
Rated current 85 A
Operating voltageNetwork 8 to 16 V
C-EPS ECU 8 to 16 V
Full Performance 10 to 16 V
MotorType 3-Phase BLAC (Brushless AC)
Rated current/voltage 85 A / 12 V (at idle 0.5 A)
Position sensor type Hall sensor type
Torque & angle sensorType Non-contact type
Steering columnOperating type Manual tilting & telescoping
Lower shaftType Sliding (Ball slip) type
Steering gearGear ratio 50.7 mm/rev
Rack stroke 145 mm
Maximum steering angleInner wheel
Outer wheel

Hydraulic power steering Electric power steering
1. OVERVIEW
The electric power steering, EPS, does not have any belt-driven steering pump constantly running, so it
is lightweight and the motor consumes energy only when the steering wheel is turned by the driver, and
this leads to improvement in fuel efficiency. Also, the elimination of a belt-driven pump and its
accessories greatly simplifies manufacturing and maintenance. While offering these benefits, as it does
not contain any steering oil, the environment is not polluted both when the steering system is produced
and discarded.
In other words, the electric power steering (EPS) system uses the electric motor to assist the steering
force. It functions independently regardless of whether the engine is running or not, unlike the existing
hydraulic power steering.
The EPS system generates an assist steering force variably depending on the driving conditions by
controlling the motor's operation, based on the input signals from the sensors such as torque sensor and
angle sensor. In turn, the EPS receives the torque signal by the driver's movements of the steering
wheel, as well as the vehicle speed, and uses the motor to determine the assist torque. The EPS
controls the motor for this. Another features of EPS are fail-safe function, diagnosis function,
communication function between units and interface function for external diagnostic device.
The EPS system components such as the torque sensor, steering angle sensor, fail-safe relay, etc. are
located in the steering column and EPS unit assembly.
Advantages:
Assurance of improved steering
Provides optimal steering force according to the
vehicle speed
Enhanced steering stability while driving at high
speed (1)
-
-Reduced fuel consumption
Consumes energy only when steering wheel
is turned (improved by 3 to 5%)
Energy saving (reduced by 85% compared
with hydraulic power steering)
Reduced number of parts: Elimination of
steering pump, hydraulic hose, pump pulley,
oil reservoir, belt, bracket, etc. (2)
-
-
-
Comparison between hydraulic power steering and electric power steering (EPS)

4012-00
Unit Construction
Front sub
frame
Rear sub
frame
(4WD)
Rear sub
frame
(2WD)
1. SPECIFICATION
Body mounting:
4-points bush
Transaxle mounting:
2-points bush
Weight: 22.37 kg 1.
2.
3.
Body mounting:
4-points bush
Axle mounting:
4-points bush
Weight: 16.61 kg 1.
2.
3.
Body mounting:
40 points direct
mounting
Spring link:
Direct mounting
without bracket on
rear cross member
Weight: 12.74 kg 1.
2.
3.
BRKT-ENG MTG RRBRKT-ENG MTG FRT

4. Transaxle mounting (Rear)3. Rear mounting (LH & RH)
2. Front mounting (LH & RH)
1. Transaxle mounting (Front)
2. TIGHTENING TORQUE
Bolt (17 mm) /
Nut (17 mm)68.6 to 88.2 Nm
Bolt (17 mm)88.2 to 107.8 Nm
Bolt (17 mm)88.2 to 107.8 Nm
2 Bracket mounting
bolts (17 mm)88.2 to 107.8 Nm
Bolt (14 mm) /
Nut (14 mm)68.6 to 88.2 Nm
3 Bolts (14 mm)29.4 to 49.0 Nm
Front sub frame - based on 4WD

Installation Sectional diagram
1. Front
2. Rear
Mounting bracket Mounting bolt
3. Transaxle mounting (Front)
For manual transaxle For automatic transaxle
(diesel)
4. Transaxle mounting (Rear)
1) Sectional Diagram and Bolts for Front Sub Frame
Mounting nut
29.4 to 39.2 Nm
Bolt9.4 to 39.2 Nm

The front sub frame consists of 4 body bush mountings(A) and 2 engine bush mountings(B) which
reduce the vibration from the powertrain and road, and also control the torque. And the two engine bush
mountings consist of an engine mounting which supports the engine powertrain and a transmission
mounting.
The engine side and transmission side mountings are rubber mountings with brackets and insulators
while the body mounting is a rubber bush mounting which is fitted to the frame.
Installation of front sub
frame (4WD)The installation of the front sub frame is the same for both automatic
transmission and manual transmission. For 4WD, the PTU and the
propeller shaft are installed.
Installation of front sub
frame (2WD)The installation of the front sub frame is the same for both automatic
transmission and manual transmission.
PTU assembly

6810-00
Heater & A/C control assembly
Heater and A/C control assembly design and switch arrangement changed
- Digital display (LCD display) with FATC used
- Push button type switch used (self-return type)
2. MAJOR CHANGES
Change of air conditioner pipe
With MTC
With FATC
With MTC
With FATC
Changes in heater and control assembly
Liquid and suction pipe
Liquid and suction pipe route changed due to change of headlamp mounting bracket

5110-00
Front impact
sensor mounting
Front end upper panel
Headlamp
aiming holeFront bumper bracket
Front bumper
bracket
Headlamp
bracket
Front bumper
- The appearance of the front bumper has been changed.
- The front end upper panel has been newly applied.
Front end upper member
The front bumper bracket has been newly applied.
Headlamp member
- Aiming hole has been added because of the changed
headlamp
- The install location of front impact sensor has been
changed.
- The appearances of the front bumper bracket and
headlamp bracket have been changed.