2011 FORD KUGA power

Road/Roller Testing
Road or roller testing may be carried out for various
reasons and a procedure detailing pre-test checks,
engine starting and stopping, pre-driving checks,
on-test checks and final checks to be completed
on completion of the test is given below.
Unless complete vehicle performance is being
checked, the full road test procedure need not be
carried out. Instead, those items particularly
relevant to the system(s) being checked can be
extracted.
Pre-Test Checks
WARNING: If the brake system hydraulic
fluid level is low, pedal travel is excessive
or a hydraulic leak is found, do not attempt
to road test the vehicle until the reason for
the low fluid level, excessive pedal travel
or hydraulic leak is found and rectified.
It is suggested that pre-test checks and functional
tests of those systems and circuits which affect the
safe and legal operations of the vehicle, such as
brakes, lights and steering, should always be
carried out before the road or roller test.
With the ignition switched off, check:
– the engine oil level.
– the engine coolant level.
– the tires, for correct pressure, compatible types and tread patterns, and wear within limits.
– that there is sufficient fuel in the tank to complete the test.
– all around the engine, transmission and under the vehicle for oil, coolant, hydraulic and fuel
leaks. Make a note of any apparent leaks and
wipe off the surrounding areas to make it easier
to identify the extent of the leak on completion
of the test.
Starting the Engine
NOTE: On initial drive away from cold and within
the first 1.5 km (1 mile), do not depress the
accelerator pedal beyond half travel until the
vehicle has attained a minimum speed of 25 km/h
(15 miles/h). Never operate at high engine speed
or with the accelerator pedal at full travel whilst the
engine is cold.
With the ignition switched off, check: – that the parking brake is applied.
– that the gear lever is in the neutral position.
– that all instrument gauges (except fuel gauge)
read zero.
With the ignition switched on, check:
– that the ignition controlled warning lamps are illuminated.
– that the engine temperature gauge registers a reading compatible with the engine temperature.
– that the fuel gauge registers a reading appropriate to the fuel level in the tank.
– the operation of the parking brake warning lamp and fluid level warning indicator.
Road or Roller Testing
CAUTION: If road testing, check the brake
operation while still traveling at low speed
before continuing with the test. If the
brakes pull to one side, or appear to be
otherwise faulty, do not continue with the
road test until the fault has been found and
rectified.
During the road or roller test, check:
– that the clutch pedal operation is not stiff or heavy.
– that the initial gear engagement is smooth and there is no evidence of clutch drag.
– that the parking brake control operates smoothly and releases quickly and completely.
– that the clutch takes up the drive smoothly, without slip or judder.
– that gear changing is smooth with no abnormal noises or vibrations from the transmission.
– the engine power output is satisfactory, full power is achieved, acceleration is smooth and
pedal operation is not stiff or heavy, and engine
speed returns to idle correctly.
– there is no excessive or abnormally colored smoke from the engine under normal driving,
heavy load or overrun conditions.
– that steering operation, including power steering (if equipped), is smooth, accurate, not
excessively heavy or with excessive free play
or vibration.
– that the steering does not pull to one side and self centers smoothly after cornering.
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E59517
Description
Item
Activated charcoal filter
1
Coarse filter
2
Filter masks with wadding, sponge or colloid filters
and also paper masks are all unsuitable for working
with coating materials because they do not stop
solvent vapors.
Eye protection
Cutting grinding welding solvents and paint bear
fundamental risks for your eyes.
Damage ranging from irritation of the cornea to
incurable illnesses is possible.
Solvents and paint – even water based – could not
only be absorbed via your skin but also via your
eyes.
Therefore always wear the appropriate eye
protection for your work.
Protective goggles must be inert toward splashes
of solvent, and must have side protection. Best
protection during spray painting is offered by full
mask respirators or helmet respirators with built-in
visor.
Skin protection
Spray painters must wear suitable protective work
clothing (flame-proof and anti-static). Also, when
working with water based materials, comprehensive
skin protection must be worn, because these
materials are very easily absorbed through the
skin.
Change your protective clothing at proper intervals.
Clothes contaminated with coating materials can
easily catch fire.
Do not choose clothes or underwear with a large
content of easy melting synthetic fiber, because
this material considerably increases the danger
and degree of injuries (melted plastic on the skin!). For areas of the skin which are not covered by
protective clothing suitable skin protection cleaning
and care agents must be used.
Ear protection
Cutting grinding compressors and extractor fans
and ducts are the main sources of noise in body
and paint shops.
Always wear suitable ear protection like ear plugs
or ear defenders.
Protection of the vehicle
Protect affected areas from weld spatter and dust
during all welding and grinding work on the vehicle.
If metallic dust stays on the vehicle for some time,
there is the likelihood of film rust formation.
Grinding produces tiny spots of damage to the paint
surface, which may cause corrosion. Also use
suitable protective measures to protect the interior
when performing repair operations which relate to
the inside of the vehicle.
For this reason, make sure to:
• Use carbon fiber blankets to protect the vehicle
body and the interior.
• Use covering film to protect the vehicle body from grinding dust and metal dust.
• Use covering paper to protect the interior from grinding dust.
In addition, take into account:
• Remove fuel supply components as necessary.
• Protect working areas which are in danger of catching fire with a fireproof blanket.
• Keep heat away from all components of the air conditioning system.
• Remove all components in the space adjoining the repair area.
Electronic components
Increased use of comfort and safety electronics in
modern vehicles requires additional attention to be
paid during body work.
Over voltages produced during welding can cause
electronic systems to be damaged. In particular,
the safety instructions for performing welding work
on vehicles with airbag systems must be adhered
to.
WARNING: After disconnecting the power
supply and before performing further work,
a wait time of up to 15 minutes must be
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SECTION 100-04 Noise, Vibration and Harshness
VEHICLE APPLICATION:2008.50 Kuga
PA G E
CONTENTS
DIAGNOSIS AND TESTING
100-04-2
Noise, Vibration and Harshness (NVH) ........................................................................\
......
100-04-2
Inspection and Verification ........................................................................\
..........................
100-04-2
Noise Diagnostic Procedure ........................................................................\
.......................
100-04-3
Road Test ........................................................................\
...................................................
100-04-3
Road Test Quick Checks........................................................................\
............................
100-04-4
Road Conditions ........................................................................\
.........................................
100-04-4
Vehicle Preparation ........................................................................\
....................................
100-04-4
Power Steering Conditions ........................................................................\
.........................
100-04-4
Power Steering Operation Noise Check ........................................................................\
.....
100-04-7
Symptom Chart ........................................................................\
...........................................
100-04-14
Pinpoint Tests ........................................................................\
.............................................
100-04-1
Noise, Vibration and Harshness
100-04- 1
.
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Noise Conditions
• Gear noise is typically a howling or whining dueto gear damage or incorrect bearing preload. It
can occur at various speeds and driving
conditions, or it can be continuous.
• Chuckle is a particular rattling noise that sounds like a stick against the spokes of a spinning
bicycle wheel. It occurs while decelerating from
64 km/h (40 mph) and can usually be heard all
the way to a stop. The frequency varies with
vehicle speed.
• Knock is very similar to chuckle, though it may be louder and occurs on acceleration or
deceleration. The teardown will disclose what
has to be corrected.
Clicking, popping or grinding noises may be caused
by the following:
• worn, damaged or incorrectly installed wheel bearing, suspension or brake component.
Check and rule out tires, exhaust and trim items
before disassembling the transmission to diagnose
and correct gear noise.
The noises described under Road Test usually
have specific causes that can be diagnosed by
observation as the unit is disassembled. The initial
clues are the type of noise heard on the road test
and driving conditions.
Vibration Conditions
Vibration at highway speeds may be caused by
the following:
• out-of-balance front or rear wheels.
• out-of-round tires.
Shudder or vibration during acceleration may be
caused by the following:
• damaged powertrain/drivetrain mounts.
• excessively high constant velocity (CV) joint operating angles caused by incorrect ride height.
Check ride height, verify correct spring rate and
check items under inoperative conditions.
Road Test
A gear-driven unit will produce a certain amount
of noise. Some noise is acceptable and may be
audible at certain speeds or under various driving
conditions, as on a newly paved asphalt road. The slight noise is in no way detrimental and must be
considered normal.
The road test and customer interview (if available)
provide information needed to identify the condition
and give direction to the correct starting point for
diagnosis.
1. Make notes throughout the diagnosis routine.
Make sure to write down even the smallest bit
of information, because it may turn out to be the
most important.
2. Do not touch anything until a road test and a thorough visual inspection of the vehicle have
been carried out. Leave the tire pressures and
vehicle load just where they were when the
condition was first observed. Adjusting tire
pressures, vehicle load or making other
adjustments may reduce the condition(s)
intensity to a point where it cannot be identified
clearly. It may also inject something new into
the system, preventing correct diagnosis.
3. Make a visual inspection as part of the preliminary diagnosis routine, writing down
anything that does not look right. Note tire
pressures, but do not adjust them yet. Note
leaking fluids, loose nuts and bolts, or bright
spots where components may be rubbing
against each other. Check the load space for
unusual loads.
4. Road test the vehicle and define the condition by reproducing it several times during the road
test.
5. Carry out the Road Test Quick Checks as soon as the condition is reproduced. This will identify
the correct diagnostic procedure. Carry out the
Road Test Quick Checks more than once to
verify they are providing a valid result.
Remember, the Road Test Quick Checks may
not tell where the concern is, but they will tell
where it is not.
Road Test Quick Checks
1. 24-80 km/h (15-50 mph): with light acceleration,a moaning noise is heard and possibly a
vibration felt in the front floor panel. It is usually
worse at a particular engine speed and at a
particular throttle setting during acceleration at
that speed. It may also produce a moaning
sound, depending on what component is
causing it. REFER to Tip-in Moan in the
Driveline Noise and Vibration Symptom Chart.
2. Acceleration/Deceleration: With slow acceleration and deceleration, a shake is
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sometimes noticed in the steering wheel/column,
seats, front floor panel, front door trim panel or
front end sheet metal. It is a low frequency
vibration (around 9-15 cycles per second). It
may or may not be increased by applying the
brakes lightly. REFER to Idle
Boom/Shake/Vibration in the Driveline Noise
and Vibration Symptom Chart.
3. High Speed: A vibration is felt in the front floor panel or seats with no visible shake, but with
an accompanying sound or rumble, buzz, hum,
drone or booming noise. Coast with the clutch
pedal depressed (manual transmission) or shift
control selector lever in "N" (NEUTRAL)
(automatic transmission) and engine idling. If
vibration is still evident, it may be related to
wheels, tires, front brake discs, wheel hubs or
front wheel bearings. REFER to Shake and
Vibration While Driving in the Driveline Noise
and Vibration Symptom Chart.
4. Engine rpm Sensitive: A vibration is felt whenever the engine reaches a particular rpm.
It will disappear in neutral coasts. The vibration
can be duplicated by operating the engine at
the problem rpm while the vehicle is stationary.
It can be caused by any component, from the
accessory drive belt to the clutch or torque
converter which turns at engine speed when the
vehicle is stopped. REFER to Shake and
Vibration While Driving in the Driveline Noise
and Vibration Symptom Chart.
5. Noise and Vibration While Turning: Clicking, popping or grinding noises may be due to the
following:
• worn, damaged or incorrectly installed front wheel bearing.
• damaged powertrain/drivetrain mounts.
Road Conditions
An experienced technician will always establish a
route that will be used for all NVH diagnosis road
tests. The road selected should be reasonably
smooth, level and free of undulations (unless a
particular condition needs to be identified). A
smooth asphalt road that allows driving over a
range of speeds is best. Gravel or bumpy roads
are unsuitable because of the additional road noise
produced. Once the route is established and consistently used, the road noise variable is
eliminated from the test results.
NOTE:
Some concerns may be apparent only on
smooth asphalt roads.
If a customer complains of a noise or vibration on
a particular road and only on a particular road, the
source of the concern may be the road surface. If
possible, try to test the vehicle on the same type
of road.
Vehicle Preparation
Carry out a thorough visual inspection of the
vehicle before carrying out the road test. Note
anything which is unusual. Do not repair or adjust
any condition until the road test is carried out,
unless the vehicle is inoperative or the condition
could pose a hazard to the technician. After
verifying that the condition has been corrected,
make sure all components removed have been
installed.
Power Steering Conditions
Check for the noise in the following conditions to
verify the customer concern.
• Check for the noise in several temperature conditions.
• Is the noise from when the vehicle was new?
• Can the noise be repeated constantly or is it random?
• Check the condition of the vehicle age, mileage and service record.
• Interview the customer to find the operating condition in which the noise will occur. Test the
vehicle based on the detail(s) from the customer
interview.
• Follow the power steering operation noise condition tables below, to find which condition
the noise will occur.
Power Steering Operation Noise Check
Step 1: Check for NVH concerns from non-steering
components, which may sound like noises coming
from the steering system.
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Power assisted steering operating conditionDriving
Parking
Cornering condition
Driving straight ahead
Steering at a steering
lock stop
Steering central/slightly
off center
REFER to NVH
concerns from other
components column D
REFER to NVH
concerns from other
components column C
REFER to NVH
concerns from other
components column B
REFER to NVH
concerns from other
components column A
NVH concerns from other components
NVH concerns from other condition (column A to D) DCBA
Driving Condition
Noise
XOXX
Drive off, stop driving and slow cornering
over uneven roads
Pedal box knocking
XOOX
Drive off, driving and cornering
Stabilizer bar link
knocking
X
X
Drive off, driving, acceleration and
deceleration
Engine support insu-
lator knocking
OOXX
Engine on, activate switch for air condi-
tioning
Air conditioning
knocking
XO
X
Drive off, driving, cornering, acceleration
and deceleration
Suspension knocking
(Subframe, Springs)
X
OX
Drive off, driving, cornering, acceleration
and deceleration
Constant velocity (CV)
joint knocking
X
O
Deceleration, acceleration and single
impact
Washer bottle
XO
O
All driving conditions
Loose suspension
bolts
XXXX
All driving conditions. Engine rpm
dependant
Instrument panel
rattle/squeak
• X = Noise will most likely occur in this operating condition.
• O = Noise can possibly occur in this operating condition.
• Blank = Noise is unlikely to occur in this operating condition.
Step 2: Check for steering system NVH concerns
according to operation condition described at the
customer interview.
Power assisted steering operating condition
Vehicle stationary with engine off
Driving
Parking
Steering at a
steering lock stop
Steering central/
slightly off centre
Steering at a
steering lock
stop
Steering
central/slightly
off center
Steering at a
steering lock
stop
Steering
central/
slightly off
center
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Power assisted steering operating conditionVehicle stationary with engine off
Driving
Parking
REFER to steering
system NVH
concerns column F
REFER to steering
system NVH
concerns column E
REFER to
steering system
NVH concerns
column D
REFER to
steering
system NVH
concerns
column C
REFER to
steering
system NVH
concerns
column B
REFER to
steering
system NVH
concerns
column A
Steering system NVH concerns
Steering System operation condition (column A to F) FEDCBA
Driving condition
Noise
OX
Parking between lock stops, at engine idle and
also increased engine speed
Moan
XXOO
Driving, high engine rpm. Must be present from
new
Whine
OOXX
a) Parking between lock stops. Must be present
from new
Hiss
X
b) Holding steering wheel against lock stops. Must
be present from new
X
X
a) Parking at lock stop. Must be present from new
Lock stop impact
knock
X
b) Parking between lock stops, engine OFF. Must
be present from new
Mechanical knock
(power assisted
steering (PAS) off)
X
c) Parking between lock stops, engine ON (ball
joint knock)
Mechanical Knock
(PAS on)
X
d) Parking into lock stop and release (vehicle with
hydraulic power assisted steering (HPAS) only,
not for vehicles with electro-hydraulic power
assisted steering (EHPAS))
Hammer knock
XO
e) Driving, cobble stones, rough road (clonk). Must
be present from new
Hydraulic knock
(clonk)
XXXOXX
f) Parking, driving. cobble stones and rough roads
Column knock
OXX
O
Mainly driving on rough roads
Column rattle
X
Steering left and right at high frequency. Must be
present from new
Toc-toc
XO
X
When turning steering wheel
Grinding
OX
At engine start, low temperatures below -10°C
only
Zip
• X = Noise will most likely occur in this operating condition.
• O = Noise can possibly occur in this operating condition.
• Blank = Noise is unlikely to occur in this operating condition.
Step 3: According to each identified operating
condition (Column A, B, C, D, E, F), check each possible Steering System NVH concern with the
detail symptom charts below.
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Before conducting a vehicle test to identify a NVH
concern carry out the following checks.
1. Check the tire pressures and adjust tospecification, as necessary.
2. Make sure the steering system fluid is correct, the system is free of leaks and is operating
correctly.
3. Make sure the vehicle steering system temperature is the same as described at the
customer interview.
4. All evaluations must take place in a relatively quiet location.
5. The heating - air conditioning (A/C) fan and radio must be turned off during evaluations and
the windows closed.Symptom Chart
Power Steering Moan Noise
Test Condition
Listen for steering moan noise with the vehicle
parked, transmission in neutral and all windows
closed in the following test conditions.
1. Engine speed at idle with no steering action.
2. Engine speed at idle with slow 90 degrees persecond turning of the steering wheel.
3. Engine speed at 1250 +/- 50 rpm with no steering action.
4. Engine speed at 1250 +/- 50 rpm with slow 90 degrees per second turning of the steering
wheel.
Action
Possible Sources
Symptom
• CHECK the routing of thepower steering lines.
• CHECK the power steering line clamps are secure.
• CHECK the power steering lines for clearance from the
vehicle body, front axle cross-
member and steering gear.
Power steering lines.
Power steering system moan
noise – A continuous low pitched
humming noise occurs when the
steering wheel is turned and the
steering system is loaded. Noise
frequency changes with engine
rpm changes. Particularly
annoying at lower engine speed. FLUSH the power steering
system.
REFER to:
Power Steering
System Flushing (211-00
Steering System - General
Information, General Proced-
ures).
Incorrect power steering fluid.
Pressure pulses from the power
steering pump. Certain amount
of noise level acceptable, not a
safety critical item.
Power steering pump.
Power Steering Whine Noise
Test Condition
Listen for steering whine noise with the vehicle
parked, transmission in neutral and all windows
closed in the following test conditions. 1. Engine speed at 1800 +/- 50 rpm with no
steering action.
2. Engine speed at 1800 +/- 50 rpm with slow 90 degrees turning of the steering wheel.
3. Engine speed at 3000 +/- 50 rpm with no steering action.
4. Engine speed at 3000 +/- 50 rpm with slow 90 degrees turning of the steering wheel.
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