2011 FORD KUGA 100

Hydraulic principle of operation
E96442
3
4
5
7
8
6
1
2
Description
Item
Reservoir
1
Valve unit
2
Steering rack and pinion
3
Flow control/pressure relief - return
4
Flow control/pressure relief valve
5Description
Item
Outlet of the power steering pump
6
Electro-hydraulic power steering pumpRefertoComponentDescription:(page
5)
7
Low pressure suction line
8
When the engine is started, the electro-hydraulic
power steering pump sucks in power steering fluid
from the reservoir. The fluid flows through the pump
and is discharged under high pressure from the
outlet. The high-pressure line carries the power
steering fluid to the servo valve.
If no steering effort is applied, there is no resistance
to the circulation of power steering fluid and the
supply pressure from the pump is very low. Only
minimal pressure is applied by the servo valve to
the two sides of the piston in the working cylinder.
When the steering wheel is turned in either
direction, the return flow of fluid to the reservoir is restricted by the servo valve, causing the pressure
to increase on the supply side. The power steering
fluid is directed by the servo valve to the
corresponding side of the piston in the working
cylinder, providing the power assistance required
to reduce the steering effort. The power steering
fluid which is displaced towards the low-pressure
side of the cylinder flows through the servo valve
and the return line back to the reservoir.
Component Description
Electro-hydraulic power steering pump
G1001270en2008.50 Kuga8/2011
211-02-
9
Power Steering
211-02- 9
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E96312
1
2
3
Description
Item
Reservoir
1
Hydraulic pump
2
Brushless DC motor with integral power
steering moduleRefertoComponentDescription:(page
11)
3
NOTE: The power steering pump must be filled
and vented as specified.
The electro-hydraulic power steering pump
comprises a brushless DC motor, the hydraulic
pump and the power steering fluid reservoir.
The hydraulic pump is a gear pump; a resonance
chamber incorporated into the pump body reduces
noise emissions.
The operating pressure is also regulated by means
of a pressure limiting valve which is integrated in
the pump housing. The pressure limiting valve
stabilizes the throughput to the steering gear to a
particular level independently of engine speed.
The pressure relief valve will operate if the
discharge from the pump is restricted, for example, steering held on full lock. If the output from the
pump is blocked, all output is recirculated through
the pump. As no fresh fluid from the reservoir is
drawn into the pump in the process, the
temperature of the power steering fluid in the pump
quickly increases. Consequently, periods of holding
the steering wheel at full lock should be kept to a
minimum to prevent overheating of the pump and
the power steering fluid within it.
The pressure limiting valve limits the pressure on
the outlet side to 120 bar.
Integrated steering angle sensor - vehicles
built up to 09/2009
G1001270en2008.50 Kuga8/2011
211-02-
10
Power Steering
211-02- 10
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E96430
The steering angle sensor is a inductive sensor.
The steering angle sensor monitors the steering
wheel position and the rate of turn of the steering
wheel. This information is sent to the power
steering module.
On vehicles built from 09/2009the power steering
module uses the information from the steering angle sensor at the steering column. The required
information is made available to the power steering
module via the CAN bus.
Brushless DC motor with integral power
steering module
G1001270en2008.50 Kuga8/2011
211-02-
11
Power Steering
211-02- 11
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1
2
3
45
6
7
8
9
10
E42460
Description
Item
Connector
1
Power steering module
2
Seal
3
Bearing
4
Shaft
5Description
Item
Cover
6
Rotor with magnets
7
Stator8
Distributor
9
Bearing
10
In the electrohydraulic power steering system, a
brushless 12 volt direct current motor drives the
hydraulic pump. Higher pumping rates are only
provided when they are required for steering
manoeuvres. This avoids unnecessary energy
consumption in the majority of phases in a drive
cycle.
Commutation in the motor is done electronically.
As a result, there are no brushes to wear away.
The entire system is designed for maintenance-free
operation.
In more than 85% of all driving situations, the
power steering pump operates at standby speed
and consumes less than 4A. However, pump speed
can quickly increase to full rotational speed if
emergency steering manoeuvres require it. The system has a continuously variable pump
rotational speed.
G1001270en2008.50 Kuga8/2011
211-02-
12
Power Steering
211-02- 12
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Power Steering Pressure Line and Return Line Assembly — 2.5LDuratec (147kW/200PS) - VI5(13 443 0)
General Equipment
Hose Clamp Remover/Installer
Removal
NOTE: Removal steps in this procedure may
contain installation details.
1. Refer to: Steering System Health and Safety
Precautions (100-00 General Information,
Description and Operation).
2. Refer to: Wheel and Tire (204-04 Wheels and
Tires, Removal and Installation).
3.
E98543
x7
4.
E99630
5.
E99631
6. WARNING: Be prepared to collect escaping fluid.
1. General Equipment: Hose ClampRemover/Installer
2. Torque: 30
Nm
E114706
1
2
7. Torque: 23Nm1.
2. Torque: 7
Nm
G1185534en2008.50 Kuga8/2011
211-02- 13
Power Steering
211-02- 13
REMOVAL AND INSTALLATION
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Power Steering Pump — 2.5L Duratec (147kW/200PS) -VI5(13 434 0)
General Equipment
Hose Clamp(s)
Hose Clamp Remover/Installer
Removal
NOTE: Removal steps in this procedure may
contain installation details.
1. Refer to: Steering System Health and Safety
Precautions (100-00 General Information,
Description and Operation).
2. Refer to: Wheel and Tire (204-04 Wheels and
Tires, Removal and Installation).
3.
E98543
x7
4.
E99630
5.
E99631
6. 1. WARNING: Be prepared to collect
escaping fluid.
General Equipment: Hose Clamp(s)
2. General Equipment: Hose Clamp Remover/Installer
E114163
12
7.1. WARNING: Be prepared to collect
escaping fluid.
Torque: 30Nm
3. General Equipment: Hose Clamp
Remover/Installer
4. Torque: 10
Nm
G1176952en2008.50 Kuga8/2011
211-02- 18
Power Steering
211-02- 18
REMOVAL AND INSTALLATION
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Power Steering Pump to Steering Gear Pressure Line — 2.5LDuratec (147kW/200PS) - VI5(13 440 0; 13 443 0)
General Equipment
Hose Clamp Remover/Installer
Removal
NOTE: Removal steps in this procedure may
contain installation details.
1. Refer to: Steering System Health and Safety
Precautions (100-00 General Information,
Description and Operation).
2. Refer to: Wheel and Tire (204-04 Wheels and
Tires, Removal and Installation).
3.
E98543
x7
4.
E99630
5.
E99631
6. WARNING: Be prepared to collect escaping fluid.
1. General Equipment: Hose ClampRemover/Installer
2. Torque: 30
Nm
E114706
1
2
7. Torque: 23Nm1.
2. Torque: 7
Nm
G1185535en2008.50 Kuga8/2011
211-02- 21
Power Steering
211-02- 21
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Steering Gear(13 116 0)
Special Tool(s) / General Equipment205-880
Alignment Pins, Subframe
E93105
211-020
Separator, Ball Joint
13006
Transmission Jack
Materials
Specification
Name
WSA-M2C195-A / 9U7J-
M2C195-AA
Power Steering Fluid IW
Removal
NOTE:
Removal steps in this procedure may
contain installation details.
1. Refer to: Steering System Health and Safety
Precautions (100-00 General Information,
Description and Operation).
2. CAUTION: Make sure that the steering wheel lock is engaged.
NOTE: Make sure that the road wheels are in
the straight ahead position.
E99259
3. Torque: 30Nm
E66155
4.On both sides.
Refer to: Wheel and Tire (204-04 Wheels and
Tires, Removal and Installation).
5. If equipped.
E98543
x7
6.If equipped.
Torque: 8
Nm
E75215
7. CAUTION: Make sure that the ball joint
ball does not rotate.
G1001271en2008.50 Kuga8/2011
211-02- 25
Power Steering
211-02- 25
REMOVAL AND INSTALLATION
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FORD KUGA 2011.0MY WORKSHOP REPAIR MANUAL