2011 FORD KUGA wheel torque

All-wheel drive control unit
E100663
14
3
2
5
Description
Item
Electronic Control Unit
1
Control valve
2
Pressure/temperature sensor
3
Electrical connection CAN (controller area
network) databus
4
Electric feed pump connection
5
The all-wheel drive control unit is bolted directly to
the housing of the Haldex clutch.
It forms one unit made up of the control valve, a
pressure/temperature sensor, and a control
module. It receives signals from the PCM and from
the ABS control module via the CAN data bus. The
control module in the control unit uses these
signals to determine the fluid pressure that is
needed to actuate the clutch plates depending on
the requirement. This determines how much torque
should be transmitted to the rear wheels. All-wheel
drive is deactivated if a fault occurs in the all-wheel
drive control unit.
A preload of approx. 80 Nm is always present at
the Haldex clutch. The temperature sensor of the Haldex clutch is
installed near the control valve in the control unit
and is surrounded by the hydraulic fluid. The
temperature is transmitted to the control module
and is used for adaptation to the changing viscosity
of the hydraulic fluid. If the hydraulic fluid is cold,
the control valve has to be opened slightly more
than requested. This allowance has to be reduced
as the temperature increases. The normal working
temperature of the hydraulic fluid is between +40
°C and +60 °C. If the temperature rises above 100
°C, the clutch is depressurised; if the temperature
falls below 95 °C, the clutch is pressurised again.
All-wheel drive is deactivated and a diagnostic
trouble code set if a fault occurs in the temperature
sensor.
With Haldex Generations I and II, the control valve
was actuated via a stepper motor. With Haldex
Generation III, the stepper motor has been omitted.
The control valve is now actuated via a solenoid
valve. The solenoid valve is actuated by the control
module in the all-wheel drive control unit by means
of pulse width modulation. The pulse width
modulation determines the position of the
adjustment spindle and thus the opening cross
section of the return hole. This is how the pressure
at the working piston of the plates is determined.
If the return hole is fully closed, maximum pressure
is applied to the plates. If the return hole is fully
open, the plates are unpressurized.
Electric feed pump
The electric feed pump is installed in the clutch
unit. It works according to the gerotor principle.
The main purpose of the feed pump is to fill the
pressure accumulator and the space behind the
pump plunger with hydraulic fluid, thereby ensuring
a fast response time of the Haldex clutch. The feed
pump used in the third generation is designed to
achieve an even higher pressure than the base
pressure of 4 bar. It is supplied with current by the
control module in the all-wheel drive control unit
when the engine is running above approx. 400 rpm.
Pressure control - 3rd generation
Haldex clutch
G1076981en2008.50 Kuga8/2011
205-02-
10
Rear Drive Axle/Differential
205-02- 10
DESCRIPTION AND OPERATION
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6
7
8
9
10
11
1
2
3
4
5
6
7
8
9
10
11
E114914
Description
Item
Haldex clutch fluid
1
Inlet filter
2
Electric feed pump
3
Filters4
Pressure accumulator
5Description
Item
Control valve
6
Dished washer
7
Ring piston
8
Clutch plate pack
9
Return pressure accumulator
10
Return control valve
11
Full torque is available at any time on the 4th
generation Haldex clutch because the pressure is
not dependent on the difference in the speeds of
rotation. This is used for instance to activate the
Haldex clutch for better traction when moving off.
On the 4th generation Haldex clutch, the preload
function which applied 80 Nm to the plates in the
3rd generation is no longer required.
On request from the control unit and at engine
speeds above 400 rpm, the electric feed pump runs
and maintains the storage pressure at about 30
bar.
A pressure reducing valve acts as a control valve,
allowing the all-wheel drive control unit to control
the pressure with much greater precision. The
all-wheel drive control unit monitors the position and function of the control valve. The control valve
distributes the pressure, depending on the
requirements, across its three outlet openings
(storage pressure, working pressure, return).
From the storage pressure (30 bar) and depending
on the requirements, the control valve regulates a
working pressure of 0 - 17 bar, which is applied to
the ring piston. At 17 bar working pressure, the
maximum torque of 1000 Nm is transferred to the
rear wheels. The all-wheel drive control unit
ensures the best possible performance under all
driving conditions, for all road conditions and
independent of the speed.
G1076981en2008.50 Kuga8/2011
205-02-
16
Rear Drive Axle/Differential
205-02- 16
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Front Drive Halfshafts
Inspection and Verification
NOTE:New front wheel drive halfshafts should not
be installed unless disassembly and inspection
reveals unusual wear.
1. Inspect front wheel driveshaft joint boots for evidence of cracks, tears or splits.
NOTE: While inspecting the front wheel driveshaft
CV joint boots, watch for indentations (dimples) in
the boot convolutions. If an indentation is observed,
it must be removed.
2. Inspect the underbody for any indication of grease splatter in the vicinity of the front wheel
driveshaft CV joint boots outboard and inboard
locations, which is an indication of front wheel
driveshaft CV joint boot and/or front wheel
driveshaft CV joint boot clamp damage. 3. Inspect for inboard CV joint stub shaft pilot
bearing housing seal leakage at the front wheel
driveshaft CV joint.
4. Make sure front axle wheel hub retainer is the correct prevailing torque type.
5. The silicone front wheel driveshaft CV joint boot will sweat during operation, causing a light film
of grease to show on the outside of the front
wheel driveshaft CV joint boot. This condition
is normal.
NOTE: Halfshafts are not balanced and do not
contribute to rotational vibration.
6. If the concerns remain after the inspection, determine the symptoms and go to the Symptom
Chart. For additional Noise, Vibration and
Harshness (NVH). REFER to Section 100-04
[Noise, Vibration and Harshness] .
Symptom Chart
Action
Possible Sources
Symptom
• INSPECT, CLEAN andLUBRICATE as necessary.
• Inadequate or contaminated
lube in outboard/inboard front
wheel driveshaft CV joint.
• Clicking, Popping or Grinding
Noises While Turning
• INSPECT and REPAIR asnecessary.
• Another component contacting
driveshaft assembly.
• INSPECT and REPAIR asnecessary. REFER to
Section 204-00 [Suspension
System - General Information]
/ 206-00 [Brake System -
General Information] /211-00
[Steering System - General
Information] .
• Wheel bearings, brakes,
suspension or steering
components.
• REPAIR or INSTALL new asnecessary. REFER to
Section 204-04 [Wheels and
Tires] .
• Out of balance front wheels or
tires.
• Vibration at Highway Speeds
• REPAIR or INSTALL new asnecessary. REFER to
Section 204-04 [Wheels and
Tires] .
• Out-of-round tires.
• REPAIR or INSTALL new asnecessary.
REFER to Halfshaft Disas-
semblv and Assembly in this
section.
• Incorrectly seated outboard
front wheel driveshaft CV joint
in front wheel hub.
G17442en2008.50 Kuga8/2011
205-04- 3
Front Drive Halfshafts
205-04- 3
DIAGNOSIS AND TESTING
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13.
E67589
14.Torque: 120Nm
x2x2
E132307
15.
E101039
16.
17.If equipped.
E98543
x7
18.Refer to: Wheel and Tire (204-04 Wheels and
Tires, Removal and Installation).
19. Lower the Vehicle.
20. N O T E : This step is only necessary when
installing a new component.
Torque: 270
Nm
E99195
G1076961en2008.50 Kuga8/2011
205-04- 15
Front Drive Halfshafts
205-04- 15
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17.
18.If equipped.
E98543
x7
19.Refer to: Wheel and Tire (204-04 Wheels and
Tires, Removal and Installation).
20. Lower the Vehicle.
21. N O T E : This step is only necessary when
installing a new component.
Torque: 270
Nm
E99195
G1076962en2008.50 Kuga8/2011
205-04- 26
Front Drive Halfshafts
205-04- 26
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too close to the fluid level indicator assembly,
or float assembly damage.
Bypass Condition Test
1. Check the fluid in the brake master cylinderreservoir. Fill the brake master cylinder reservoir
if low or empty.
2. Observe the fluid level in the brake master cylinder reservoir. If after several brake
applications, the fluid level remains the same,
measure the wheel turning torque required to
rotate the wheels with the brakes applied as
follows:
Place the transaxle in the NEUTRAL position.
Raise and support the vehicle. REFER to: (100-02
Jacking and Lifting) Jacking (Description and Operation),
Lifting (Description and Operation).
Apply the brakes with a minimum of 445 N (100
lb) and hold for approximately 15 seconds. With
the brakes still applied, exert a torque on the front
wheels of 10.1 Nm (75 lb ft). If either wheel rotates,
install a new brake master cylinder.
REFER to: Brake Master Cylinder - 2.5L Duratec
(147kW/200PS) - VI5 (206-06 Hydraulic Brake
Actuation, Removal and Installation).
Non-Pressure Leaks
Any empty brake master cylinder reservoir
condition may be caused by two types of
non-pressure external leaks.
Type 1: An external leak may occur at the brake
master cylinder reservoir cap because of incorrect
positioning of the gasket and cap. Reposition the
cap and gasket.
Type 2: An external leak may occur at the brake
master cylinder reservoir mounting seals. Service
such a leak by installing new seals.
G1058975en2008.50 Kuga8/2011
206-00- 19
Brake System - General Information
206-00- 19
DIAGNOSIS AND TESTING
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Brake Pads(12 234 0)
Special Tool(s)206-005
Retractor, Brake Caliper
Piston
12014
Materials
Specification
Name
WSS-M6C57-A2
Brake Fluid - Super
DOT4
WSS-M12A4-A2 / 1C1J-
19584-BA
Lubricating Paste
Removal
NOTE:
Removal steps in this procedure may
contain installation details.
1. Refer to: Brake 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.
E100314
4. WARNING: The brake caliper housing Torx bolts must not be removed.
CAUTION: Make sure that no load is
placed on the brake hose.
Torque: 28
Nm
E94825
12
3
5.
E100312
6.
E100313
G1001203en2008.50 Kuga8/2011
206-03- 2
Front Disc Brake
206-03- 2
REMOVAL AND INSTALLATION
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Brake Caliper(12 243 0)
General EquipmentHose Clamp(s)
Removal
NOTE: Removal steps in this procedure may
contain installation details.
1. Refer to: Brake 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. General Equipment: Hose Clamp(s)
Loosen: 90°
E94932
4.Refer to: Brake Pads (206-03 Front Disc Brake,
Removal and Installation).
5. Torque: 22,5
Nm
E95017
6. WARNING: Make sure that the brake
hose is not twisted and is correctly
located.
NOTE: This step is only necessary when
installing a new component.
Refer to: Front Brake Flexible Hose (206-03
Front Disc Brake, Removal and Installation).
Installation
1. To install, reverse the removal procedure.
2. Refer to: Brake System Bleeding (206-00 Brake
System - General Information, General
Procedures).
Refer to: Brake System Pressure Bleeding
(206-00 Brake System - General Information,
General Procedures).
G1001204en2008.50 Kuga8/2011
206-03- 4
Front Disc Brake
206-03- 4
REMOVAL AND INSTALLATION
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FORD KUGA 2011.0MY WORKSHOP REPAIR MANUAL