2011 FORD KUGA front

Action
Possible Sources
Symptom
• CLEAN mounting surfaces.
• Foreign material between
wheel mounting face and hub
mounting surface.
• CHECK or INSTALL new wheelbearings as necessary.
REFER to: Front Wheel
Bearing (204-01 Front
Suspension, Removal and
Installation).
• Front wheel bearing.
• CAUTION: Do not permitlubricant to get on cone sets of
stud holes or on cone angle of
wheel nuts. If corrosion is
slight, wire brush away. If
corrosion is excessive,
INSTALL new wheel studs and
nuts.
REFER to: Wheel and Tire
(204-04 Wheels and Tires,
Removal and Installation).
If the condition persists,
LUBRICATE the first three
threads of each wheel stud with
a graphite-based lubricant.
• Corrosion.
• Seized wheel nuts
• CORRECT as necessary.
• Vehicle overloaded
G1061329en2008.50 Kuga8/2011
204-04- 10
Wheels and Tires
204-04- 10
DIAGNOSIS AND TESTING
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Rear Drive Axle and Differential – Component Location
Powertrain
6
6
1
2
3
3
4
5
6
6
E102416
Description
Item
Transmission assembly
1
Transfer box,
2
Halfshaft - front axle
3Description
Item
Drive shaft
4
Rear axle
5
Halfshaft - rear axle
6
G1076980en2008.50 Kuga8/2011
205-02- 2
Rear Drive Axle/Differential
205-02- 2
DESCRIPTION AND OPERATION
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Rear Drive Axle and Differential – System Operation andComponent Description
System Operation
General Information
The powertrain with all-wheel drive consists of the
following main components:
• engine
• transaxle with front axle differential
• transfer box
• halfshafts and driveshafts
• Haldex clutch
• rear axle differential
The Haldex clutch guarantees continuous variable
torque transmission to the rear axle under all
driving conditions. The Haldex clutch reacts
immediately and equally quickly with slow or fast
wheel slip.
A difference in angle of rotation of 90° between the
input and output shafts is required to build up
maximum pressure at the multi-plate clutch or to
transmit maximum torque.
The advantage of vehicles with all-wheel drive is
that they distribute the drive between all four
wheels. They therefore have a higher tractive
power. They feature improved cornering behaviour,
as the grip at all four wheels can be better utilised.
Thus, the wheels contribute to a greater degree
towards cornering stability.
The engine torque is transmitted from the transfer
box to the rear axle via a driveshaft. The driveshaft
is flange-mounted to the input side of the Haldex
clutch.
Driving situations
Pulling away and accelerating
• When pulling away and accelerating, as muchall-wheel drive as necessary must be available
immediately in the short-term. During
acceleration, the electronic system detects slip
at the front axle. This slip is counter-controlled
and thus the propulsive force optimally
distributed to the two axes.
Cornering • A sporty driving style, in particular dynamic
cornering, demands stable cornering behaviour.
The all-wheel system distributes the propulsive
force to all four wheels and by so doing boosts
the high cornering forces so that the vehicle
makes optimum contact with the road surface.
Snow and black ice
• Snow and black ice require particularly high grip. Under these conditions, the Haldex clutch
always distributes the propulsive force to the
axle with the better traction. The all-wheel
system reacts intelligently and quickly to all
driving situations.
Trailer operation
• When driving with a trailer, the trailer weight (support load) is transmitted to the rear axle via
the towbar. This reduces the load on the front
wheels, which means they can slip. The
electronic system detects this difference and
distributes most of the propulsive force to the
rear axle.
Haldex clutch
E100642
G1076981en2008.50 Kuga8/2011
205-02- 6
Rear Drive Axle/Differential
205-02- 6
DESCRIPTION AND OPERATION
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The Haldex clutch is based on the principle of a
simple wet clutch that distributes the torque variably
between the front and rear axles.
Three components are linked within the Haldex
clutch:• A mechanical component, comprising input and
output shafts, the plate assembly (clutch) as
well as the cam plate and the roller bearing.
• A hydraulic component, essentially comprising pressure valves, a pressure accumulator, the
control valve, the ring pistons and a fluid filter.
• The electronic control comprises the electric fluid pump and the all-wheel drive control unit
with integrated pressure/temperature sensor
and an actuator motor for the control valve.
Design of the multi-plate clutch
7
4
3
2
8
1
6
10911
13
A
B12
5
E100662
Description
Item
Pump plunger assembly
A
Working piston assembly
B
Output shaft
1
Inner plates
2
Outer plates
3
Disc drum
4
Contact plate
5Description
Item
Input shaft
6
Cam disc
7
Springs
8
Pump plunger roller
9
Pump plunger roller
10
Pump plunger
11
Working piston roller
12
Working piston
13
G1076981en2008.50 Kuga8/2011
205-02- 9
Rear Drive Axle/Differential
205-02- 9
DESCRIPTION AND OPERATION
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SECTION 205-04 Front Drive Halfshafts
VEHICLE APPLICATION:2008.50 Kuga
PA G E
CONTENTS
SPECIFICATIONS
205-04-2
Specifications ........................................................................\
..............................................
DIAGNOSIS AND TESTING 205-04-3
Front Drive Halfshafts ........................................................................\
.................................
205-04-3
Inspection and Verification ........................................................................\
..........................
REMOVAL AND INSTALLATION 205-04-5
(14 320 0)
Front Halfshaft LH ........................................................................\
..................
205-04-16
(14 321 0)
Front Halfshaft RH — LHD 4WD/RHD 4WD ..................................................
205-04-27
(14 336 0)
Inner Constant Velocity (CV) Joint Boot .........................................................
205-04-30
(14 338 0)
Outer Constant Velocity (CV) Joint Boot ........................................................
205-04-31
Halfshaft Bearing ........................................................................\
........................................
205-04-1
Front Drive Halfshafts
205-04- 1
.
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Lubricants, Fluids, Sealers and Adhesives
Specifications
WSS-M1C 259-A1
Outer Constant Velocity Joint
Grease
Specifications
WSS-M1C 259-A1
Inner Constant Velocity Joint Grease
Capacity
Driveshaft Joint Grease Fill Capacity
Description
Outer (Grams)
Inner (Grams)
180
160
2.0 L Duratorq
2.5 L Duratec
Torque Specifications
lb-in
lb-ft
Nm
Item
-
35
48
2.0 L Duratorq - Intermediate shaft center bearing
bracket to engine block bolts - 2WD (M10x 30)
35
48
2.0 L Duratorq - Intermediate shaft center bearing
bracket to engine block bolts - 4WD (M10x 30)
-
44
60
2.0 L Duratorq - Intermediate shaft center bearing
bracket to engine block bolt - 4WD (M10x 40)
-
35
48
2.5 L Duratec - Intermediate shaft center bearing
bracket to engine block bolts - 4WD (M10x 30)
-
44
60
2.5 L Duratec - Intermediate shaft center bearing
bracket to engine block bolt - 4WD (M10x 40)
G1081400en2008.50 Kuga8/2011
205-04- 2
Front Drive Halfshafts
205-04- 2
SPECIFICATIONS
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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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Action
Possible Sources
Symptom
• CHECK ride height, VERIFYcorrect spring rate and CHECK
items under Halfshaft Joint
Pullout. REPAIR or INSTALL
new as necessary.
• Excessively high CV joint oper-
ating angles caused by incor-
rect ride height.
• Shudder Vibration During
Acceleration.
• INSPECT and INSTALL newas necessary.
• Excessively worn or damaged
inboard front wheel driveshaft
joint or outboard front wheel
driveshaft joint.
• INSPECT and REPAIR orINSTALL new as necessary.
• Inboard driveshaft bearing
retainer circlip missing or not
correctly seated in differential
side gear.
• Halfshaft Joint Pullout
• CHECK engine mounts fordamage or wear. REPAIR or
INSTALL new as necessary.
• Engine/transaxle assembly
mispositioned.
• CHECK underbody dimensions.REFER to REFER to
Section 501-00 [Body System
-General Information] .
• Frame rail or strut tower out of
position or damaged.
• CHECK for worn bushings orbent components (front stabil-
izer bar, front suspension lower
arm). REPAIR or INSTALL new
as necessary.
• Front suspension components
worn or damaged.
G17442en2008.50 Kuga8/2011
205-04- 4
Front Drive Halfshafts
205-04- 4
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