ESP FORD FIESTA 2007 Workshop Manual

100-00-3 General Information 100-00-3
DESCRIPTION AND OPERATION
About This Manual
-- . Introduction
This manual has been written in a format that is
designed to meet the needs of technicians
worldwide. The objective is to use common formats
and include similar content in each manual.
This manual provides general descriptions for accomplishing diagnosis and testing, service and
repair work with tested, effective techniques.
Following them will help assure reliability.
Special Tools
The special tool(s) table provided at the beginning
of each procedure shows all special tools required
to carry out a repair. Where possible, illustrations
are provided to assist in identifying the special tool
required.
Important Safety Instructions
Appropriate service methods and correct repair
--.! procedures are essential for the safe, reliable
operation of all motor vehicles as well as the
personal safety of the individual carrying out the
work.
This manual cannot possibly anticipate all such
variations and provide advice or cautions as to
each. Anyone who departs from the instructions
provided in this manual must first establish that he
compromises neither his personal safety nor the
vehicle integrity by his choice of methods, tools or
components.
Warnings, Cautions and Notes in This
Manual
A WARN1NG:Warnings are used to indicate
that failure to follow a procedure correctly
may result in personal injury.
A warning, caution or note is placed at the
beginning of a series of steps if it applies to multiple
steps. If the warning, caution or note only applies
to one step, it is placed at the beginning of the
specific step (after the step number).
How to Use This Manual
This manual covers diagnosis and testing, service
and repair procedures.
This manual is structured into groups and sections,
with specific system sections collected together
under their relevant group.
A group covers a specific portion of the vehicle.
The manual is divided into five groups, General
Information, Chassis, Powertrain, Electrical and
Body and Paint. The number of the group is the
first number of a section number.
Pages at the start of the manual list all sections
available. Each section has a contents list detailing
Specifications, Description and Operation,
Diagnosis and Testing, In Vehicle Repairs,
Disassembly and Assembly, Removal and
Installation.
If components need to be removed or
disassembled in sequence, the sequence will be
identified numerically in a graphic and the
corresponding text will be numbered accordingly.
All left and right-hand references to the vehicle are
taken from a position sitting in the driver seat
looking forward.
All left and right-hand references to the engine are
taken from a position at the flywheel looking
towards the front camshaft pulley.
Where appropriate, instructions will be given for
the use of the diagnostic tool.
Overview Procedures
Overview procedures contain an exploded view
A CAUTI0N:Cautions are used to indicate illustration(s). The numbered sequence within the
that failure to follow a procedure correctly illustration(s) indicate the order to be followed when
may result in damage to the vehicle or removingldisassem bling or when
equipment being used. installinglassembling a component. Additional
information,
symbol(s) or a torque figure, may also
, , N0TE:Notes are used to provide additional
be shown alonaside the com~onent.
essential information required to carry out a
complete and satisfactory repair. There are
ten symbols used to give additional
information when
removina/disassemblincr or when V AS YOU read through this manual, YOU will come /"itallinglassembling a c&ponent.
across WARNINGS, CAUTIONS and NOTES.
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100-00-7 General Information 100-00-7
DESCRIPTION AND OPERATION
Skin contact may result in frostbite.
Instructions given by the manufacturer must be
followed. Avoid naked lights, wear suitable
protective gloves and goggles.
If refrigerant comes into contact with the skin or
eyes, immediately rinse the affected areas with
water. Eyes should also be rinsed with an
appropriate irrigation solution and should not be
rubbed. SEEK MEDICAL ASSISTANCE IF
NECESSARY.
Air Conditioning Refrigerant - Do Nots
- Do not expose refrigerant bottles to sunlight or
heat.
- Do not stand refrigerant bottles upright; when
filling, hold them with the valve downwards.
- Do not expose refrigerant bottles to frost.
- Do not drop refrigerant bottles.
- Do not vent refrigerant to atmosphere under any
circumstance.
- Do not mix refrigerants, for example R12 (Freon)
and
R134a.
Adhesives and Sealers
See also Fire, Chemical Materials.
Highly flammable, flammable, combustible
-
observe No Smoking policy.
Generally should be stored in No Smoking areas.
Cleanliness and tidiness in use should be
observed, for example disposable paper covering
benches; should be dispensed from applicators
where possible; containers, including secondary
containers, should be labeled appropriately.
Solvent-based AdhesivesISealers - See
Solvents
Follow manufacturers instructions.
Water-based Ad hesives1Sealers
Hot Melt Adhesives
In the solid state, they are safe. In the molten state
they may cause burns and health hazards may
arise from the inhalation of toxic fumes.
Use appropriate protective clothing and a
thermostatically controlled heater with a thermal
cut-out and adequate extraction.
Resin-based AdhesiveslSealers, for
example Epoxide and Formaldehyde
Resin-based
Mixing should be carried out in well ventilated
areas, as harmful or toxic volatile chemicals may
be released.
Skin contact with uncured resins and hardeners
can result in irritation, dermatitis, and absorption
of toxic or harmful chemicals through the skin.
Splashes can damage the eyes.
Provide adequate ventilation and avoid skin and
eye contact.
Anaerobic, Cyanoacrylate (super-glues)
and other Acrylic Adhesives
Many are irritant, sensitizing or harmful to the skin
and respiratory tract. Some are eye irritants.
Skin and eye contact should be avoided and the
manufacturers instructions followed.
Cyanoacrylate adhesives (super-glues) MUST NOT
contact the skin or eyes. If skin or eye tissue is
bonded, cover with a clean moist pad and SEEK
IMMEDIATE MEDICAL ATTENTION. Do not
attempt to pull tissue apart. Use in well ventilated
areas as vapors can cause irritation to the nose
and eyes.
For two-pack systems see Resin-based and
lsocyanate
AdhesivesISealers.
lsocyanate (Polyurethane)
Ad
hesives1Sealers
See also Resin-based Adhesives.
Those based On polymer emulsions and rubber Individuals suffering from asthma or respiratory
latexes may contain small amounts of volatile toxic
allergies should not work with or near these and harmful chemicals. Skin and eye contact
should be avoided and adequate ventilation materials
as sensitivity reactions can occur.
provided during use. Over
exposure is irritating to the eyes and
respiratory system. Excessive concentrations may
produce effects on the nervous system including
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100=00=8 General Information 100=00=8
DESCRIPTION AND OPERATION
drowsiness. In extreme cases, loss of
consciousness may result. Long term exposure to
vapor concentrations may result in adverse health
effects.
Prolonged contact with the skin may have a
defatting effect which may lead to skin irritation
and in some cases, dermatitis.
Splashes entering the eye will cause discomfort
and possible damage.
Any spraying should preferably be carried out in
exhaust ventilated booths, removing vapors and
spray droplets from the breathing zone.
Wear appropriate gloves, eye and respiratory
protection. Asbestos dust
waste should be dampened, placed
in a sealed container and marked for safe disposal.
If any cutting or drilling is attempted on materials
(
containing asbestos the item should be dampened "
and only hand tools or low speed power tools used.
Battery Acids
See also Acids and Alkalis.
Gases released during charging are explosive.
Never use naked flames or allow sparks near
charging or recently charged batteries.
Make sure there is adequate ventilation.
Brake and Clutch Linings and Pads
Antifreeze
See Asbestos.
See also Fire, Solvents.
For example isopropanol, ethylene glycol,
methanol.
Highly flammable, flammable, combustible.
Used in vehicle coolant systems, brake air pressure
systems, screenwash solutions.
Vapors may be given off from coolant antifreeze
(glycol) when heated. Avoid breathing these
vapors.
Antifreeze may be absorbed through the skin in
toxic or harmful quantities. Antifreeze, if swallowed,
can be fatal and MEDICAL ATTENTION SHOULD
BE SOUGHT IMMEDIATELY.
These products must not be used in any cooling
or industrial water system that is connected or
linked to general, food preparation or drinking water
supplies.
Asbestos
See also Warning Symbols on Vehicles at the end
of this subsection.
Breathing asbestos dust may cause lung damage
or, in some cases, cancer.
Used in brake and clutch linings, transmission
brake bands and gaskets.
The use of drum cleaning units, vacuum cleaning
or damp wiping is preferred.
Brake Fluids (Polyal kylene Glycols)
See also Fire.
Splashes to the skin and eyes are slightly irritating.
Avoid skin and
eye'contact as far as possible.
Inhalation vapor hazards do not arise at ambient
temperatures because of the very low vapor
pressure.
Brazing
See Welding.
Chemical Materials
See also Legal Aspects.
Chemical materials such as solvents, sealers,
adhesives, paints, resin foams, battery acids,
antifreeze, brake fluids, fuels, oils and grease
should always be used with caution and stored and
handled with care. They may be toxic, harmful,
corrosive, irritant or highly flammable and give rise
to hazardous fumes and dusts.
The effects of excessive exposure to chemicals may be immediate or delayed; briefly experienced
or permanent; cumulative; superficial; life
threatening; or may reduce life expectancy.
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1 OO=OO-10 General Information 100-00-1 0
DESCRIPTION AND OPERATION
Dewaxing Engine Oils
See Solvents and Fuels (Kerosene). See Lubricants and Grease.
Dusts Exhaust Fumes
Powder, dusts or clouds may be irritant, harmful These contain asphyxiating, harmful and toxic
or toxic. Avoid breathing dusts from powdery chemicals and particles such as carbon oxides,
chemical materials or those arising from dry nitrogen oxides, aldehydes, lead and aromatic
abrasion operations. Wear respiratory protection hydrocarbons. Engines should be run only under
if ventilation is inadequate. conditions of adequate exhaust extraction or
Fine dusts of combustible material can present an general ventilation
and not in confined spaces.
explosion hazard. Avoid explosive limits and
sources of ignition.
Gasoline (petrol) engine
Electric Shock There may not be adequate warning of odor or of
irritation before toxic or harmful effects arise. These
Electric shock can result from the use of faulty may be immediate
or delayed.
electrical equipment or from the misuse of
equipment in good condition.
Diesel engine Make sure that electrical equipment is maintained
in good condition and frequently tested. Faulty
Soot, discomfort and irritation usually give
equipment should be labeled and preferably
adequate warning of hazardous fume
removed from the workstation. concentrations.
Make sure that flexes, cables, plugs and sockets
are not frayed, kinked, cut, cracked or otherwise
Fibre damaged.
Make sure that electrical equipment and flexes do
See also Dusts.
not come into contact with water.
Used in noise and sound insulation.
Make sure that electrical is protected The fibrous nature of surfaces and cut edges can by the correct rated fuse.
cause skin irritation. This is usually a physical and
Never misuse electrical equipment and never use
not a chemical effect.
equipment that is in any way faulty. The results
could be fatal. Precautions should
be taken to avoid excessive
skin contact through careful organization of work
Make sure that the cables of mobile electrical
practices and the
;se of gloves.
equipment cannot get trapped and damaged, such
as in a vehicle hoist.
-. Fire Make sure that the designated electrical workers
are trained in basic First Aid.
See also Welding, Foams, Legal Aspects.
In cases of electrocution:
Many of the materials found on or associated with
- switch off the power supply before approaching the repair of vehicles are highly flammable. Some
the victim. give
off toxic or harmful fumes if burnt.
- if this is not possible push or drag the victim
Observe strict fire safety when storing and handling
from the source of electricity using dry flammable materials
or solvents, particularly near
non-conductive material. electrical equipment or welding processes.
/
- commence resuscitation if trained to do so.
Make sure, before using electrical or welding 'L '
- SUMMON MEDICAL ASSISTANCE. equipment,
that there is no fire hazard present.
Have a suitable fire extinguisher available when
using welding or heating equipment.
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100-00-1 1 General Information 100-00-1 1
DESCRIPTION AND OPERATION
First Aid
Apart from meeting any legal requirements it is
desirable for someone in the workshop to be
trained in First Aid procedures.
Splashes in the eye should be flushed carefully
with clean water for at least ten minutes.
Soiled skin should be washed with soap and water.
In case of cold burns, from alternative fuels, place
affected area in cool to cold water.
Individuals affected by inhalation of gases and
fumes should be removed to fresh air immediately.
If effects persist, consult a doctor.
If liquids are swallowed inadvertently, consult a
doctor giving him the information on the container
or label. Do not induce vomiting unless this action
is indicated on the label.
Fluoroelastomer
See Viton.
Foams - Polyurethane
See also Fire.
Used in sound and noise insulation. Cured foams
used in seat and trim cushioning.
Follow manufacturers instructions.
Unreacted components are irritating and may be
harmful to the skin and eyes. Wear gloves and
goggles.
Individuals with chronic respiratory diseases,
asthma, bronchial medical problems, or histories
of allergic diseases should not work in or near
uncured materials.
The components, vapors or spray mists can cause
direct irritation, sensitivity reactions and may be
toxic or harmful.
Vapors and spray mists must not be inhaled. These
materials must be applied with adequate ventilation
and respiratory protection. Do not remove the
respirator immediately after spraying; wait until the
vapors/mists have cleared.
Burning of the uncured components and the cured
foams can generate toxic and harmful fumes.
Smoking, naked flames or the use of electrical
equipment during foaming operations and until
vapors/mists have cleared should not be allowed.
Any heat cutting of cured foams or partially cured foams
should be conducted with extraction
ventilation. See also the vehicle Body Repair
Manual.
Freon
See Air Conditioning Refrigerant.
Fuels
See also, Fire, Legal Aspects, Chemicals and
Solvents.
Avoid skin contact with fuel where possible. Should
contact occur, wash the affected skin with soap
and water.
Gasoline (Petrol)
Highly flammable - observe No Smoking policy.
Swallowing can result in mouth and throat irritation
and absorption from the stomach can result in
drowsiness and unconsciousness. Small amounts
can be fatal to children. Aspiration of liquid into the
lungs, through vomiting, is a very serious hazard.
Gasoline dries the skin and can cause irritation
and dermatitis on prolonged or repeated contact.
Liquid in the eye causes severe smarting.
Motor gasoline may contain appreciable quantities
of benzene, which is toxic upon inhalation, and the
concentration of gasoline vapors must be kept very
low. High concentrations will cause eye, nose and
throat irritation, nausea, headache, depression and
symptoms of drunkenness. Very high
concentrations will result in rapid loss of
CO~SC~OUS~~SS.
Make sure there is adequate ventilation when
handling and using gasoline. Great care must be
taken to avoid the serious consequences of
inhalation in the event of vapor build up arising
from spillages in confined spaces.
Special precautions apply to cleaning and
maintenance operations on gasoline storage tanks.
Gasoline should not be used as a cleaning agent.
It must not be siphoned by mouth. See First Aid.
Gasoil (Diesel Fuel)
Com busti ble.
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100-00-1 4 General Information 100-00-1 4
DESCRIPTION AND OPERATION
Marigold Industrial (Blue Nitrile range)]. If gloves
become torn or contaminated on the inside they
should be replaced. Eye protection with safety
glasses is appropriate. Use of an impervious apron
and arm protectors may be necessary if more
extensive exposure is possible. Use of skin barrier
creams suitable for work with mineral oil products
may offer some supplementary protection, but such
barrier creams should not be used in place of
protective clothing.
If accidental skin contact occurs with the fluids,
wash the area thoroughly with soap or skin
cleanser and water.
Accidental eye contact should be dealt with as per
normal first aid practices, by flushing the eyes with
an eye wash or clean cool water for
10 minutes,
after which medical attention should be obtained.
Remove and launder clothing which becomes
contaminated with the fluids. Do not place rags
contaminated with fluid in clothing pockets.
Wash thoroughly
after completing operations where
skin exposure may have occurred.
It is important that personnel do not smoke, eat or
drink whilst handling the fluids or affected
transmissions. These measures are designed to
limit the risk from accidental ingestion.
Label any decanted fluid
properlyluse an equivalent
label to that on original product containers.
Clean up any spills promptly using an inert
absorbent and wash down contaminated surfaces
with detergent and water.
Dispose of any waste fluids safely as hazardous
waste. Do
not employ used engine oils as lubricants or
for any application where appreciable skin contact
is likely to occur.
Environmental Precautions
Burning used engine oil in small space heaters or
boilers can be recommended only for units of
.
approved design. If in doubt check with the
appropriate local authority and manufacturer of
approved appliances.
Dispose of used oil and used oil filters through
authorized waste disposal contractors or licensed
waste disposal sites, or to the waste oil reclamation
trade. If in doubt, contact the relevant local
authority for advice on disposal facilities.
It is illegal to pour used oil on to the ground, down
sewers or drains, or into watercourses.
Noise
Some operations may produce high noise levels,
which could, in time, damage hearing. In these
cases, suitable ear protection must be worn.
Noise Insulation Materials
See Foams, Fibre Insulation.
0-Rings (Fluoroelastomer)
See Viton.
Paints
Safety Data Sheets
See also Solvents, Chemical Materials.
Safety Data Sheets, which detail specific material handling instructions and precautions are available
from the respective national sales company, and
via internet
www.msds.ford .corn.
Used Engine Oil
Prolonged and repeated contact with mineral oil
will result in the removal of natural fats from the
skin, leading to dryness, irritation and dermatitis.
In addition, used engine oil contains potentially
harmful contaminants, which may cause skin
cancer. Adequate means of skin protection and
washing facilities must be provided. Highly flammable, flammable
- observe No
Smoking policy
One Pack
Can contain harmful or toxic pigments, driers and
other components as well as solvents. Spraying
should be carried out only with adequate
ventilation.
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General Information
DESCRIPTION AND OPERATION
Two Pack
Can also contain harmful and toxic unreacted
resins and resin hardening agents. The
manufacturers instructions should be followed. See
also Resin-based Adhesives and
Isocyanate
Adhesives and Sealers under Adhesives and
Sealers.
Spraying should preferably be carried out in
exhausted ventilated booths removing vapor and
spray mists from the breathing zone. Individuals
working in booths should wear appropriate
respiratory protection. Those doing small-scale
repair work in the open workshop should wear
air-fed respirators.
Pressurized Equipment
See High Pressure Air, Lubrication and Oil Test
Equipment.
Solder
Solders are mixtures of metals such that the
melting point of the mixture is below that of the
constituent metals (normally lead and tin). Solder
application does not normally give rise to toxic lead
fumes, provided a
gaslair flame is used.
Oxy-acetylene flames should not be used, as they
are much hotter and will cause lead fumes to be
produced.
Some fumes may be produced by the application
of any flame to surfaces coated with grease, and
inhalation of these should be avoided.
Removal of excess solder should be undertaken
with care, to make sure that fine lead dust is not
produced, which can give toxic effects if inhaled.
Respiratory protection may be necessary.
Solder spillage and filings should be collected and
removed promptly to prevent general air
contamination by lead.
High standards of personal hygiene are necessary
in order to avoid ingestion of lead or inhalation of
solder dust from clothing.
Solvents
See also Chemical Materials, Fuels (Kerosene),
Fire.
For example acetone, white spirit, toluene, xylene,
trichloroethane.
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Used in cleaning and dewaxing materials, paints,
plastics, resins and thinners.
Some may be highly flammable or flammable.
Skin contact will degrease the skin and may result
in irritation and dermatitis following repeated or
prolonged contact. Some can be absorbed through
the skin in toxic or harmful quantities.
Splashes in the eye may cause severe irritation
and could lead to loss of vision.
Brief exposure of high concentrations of vapors or
mists will cause eye and throat irritation,
drowsiness, dizziness, headaches and, in the worst
circumstances, unconsciousness.
Repeated or prolonged exposure to excessive but
lower concentrations of vapors or mists, for which
there might not be adequate warning indications,
can cause more serious toxic or harmful effects.
Aspiration into the lungs, for example through
vomiting, is the most serious consequence of
swallowing.
Avoid splashes to the skin, eyes and clothing. Wear
protective gloves, goggles and clothing if
necessary.
Make sure there is good ventilation when in use,
avoid breathing fumes, vapors and spray mists and
keep containers tightly sealed. Do not use in
confined spaces.
When spraying materials containing solvents, for
example paints, adhesive, coatings, use extraction
ventilation or personal respiratory protection in the
absence of adequate general ventilation.
Do not apply heat or flame except under specific
and detailed manufacturers instructions.
Sound Insulation
See Fibre Insulation, Foams.
Suspended Loads
A CAUTI0N:Never improvise lifting tackle.
There is always a danger when loads are lifted or
suspended. Never work under an unsupported,
suspended or raised load, for example a
suspended engine.
Always make sure that lifting equipment such as
jacks, hoists, axle stands and slings are adequate
and suitable for the job, in good condition and
regularly maintained.
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100-00-1 6 General Information 100-00-1 6 '
DESCRIPTION AND OPERATION
Transmission Brake Bands
See Asbestos.
Underseal Welding
See
also Fire, Electric Shock, Gas Cylinders. (
Welding processes include Resistance Welding
(Spot Welding), Arc Welding and Gas Welding.
See Corrosion Protection.
Resistance Welding
Viton
In common with many other manufacturers
vehicles, some components have O-rings, seals
or gaskets, which contain a material known as
'Viton'.
Viton is a fluoroelastomer, that is a synthetic rubber
type material, which contains Fluorine. It is
commonly used for O-rings, gaskets and seals of
all types. Although Viton is the most well known
fluoroelastomer, there are others, including
Fluorel
and Tecmoflon.
When used under design conditions
fluoroelastomers are perfectly safe. If, however,
they are exposed to temperatures in excess of
400°C, the material will not burn, but will
decompose, and one of the products formed is
hydrofluoric acid.
This acid is extremely corrosive and may be
absorbed directly, through contact, into the general
body system.
O-rings, seals or gaskets which have been exposed
to very high temperatures will appear charred or
as a black sticky substance.
DO NOT; under any circumstances touch them or
the attached components.
Enquiries should be made to determine whether
Viton or any other fluoroelastomer has been used
in the affected O-ring, seal or gasket. If they are of
natural rubber or
nitrile there is no hazard. If in
doubt, be cautious, as the material may be Viton
or any fluoroelastomer.
If Viton or any other fluoroelastomers have been
used, the affected area should be decontaminated
before the commencement of work.
Disposable heavy duty plastic gloves should be
worn at all times, and the affected area washed
down using wire wool and a limewater (calcium
hydroxide) solution to neutralize the acid before
disposing of the decomposed Viton residue and
final cleaning of the area. After use, the plastic
gloves should be discarded carefully and safely. This process may cause particles of molten metal
to
be emitted at a high velocity, and the eyes and
skin must be protected.
Arc Welding
This process emits a high level of ultra-violet radiation, which may cause arc-eye, and skin burns
to the operator and to other persons nearby.
Gas-shielded welding processes are particularly
hazardous in this respect. Personal protection must
be worn, and screens used to shield other
~eo~le. . .
CONTACT LENS WEARERS ARE ADVISED TO
REVERT TO ORDINARY SPECTACLES WHEN
ARC WELDING as the arc spectrum is believed to
emit microwaves which dry out the fluid between
the lens and the eye. This may result in blindness
when the lens is removed from the eve.
Metal spatter will also occur, and appropriate eye
and skin protection is necessary.
The heat of the welding arc will produce fumes and
gases from the metals being welded, the rods and
from any applied coatings or contamination on the
surfaces being worked on. These gases and fumes
may be toxic and inhalation of these should be
avoided. The use of extraction ventilation to remove
the fumes from the working area may be necessary
particularly in cases where the general ventilation
is poor, or where considerable welding work is
anticipated. In extreme cases or confined spaces
where adequate ventilation cannot be provided,
air-fed respirators may be necessary.
Gas Welding (and Cutting)
Oxy-acetylene torches may be used for welding
and cutting, and special care must be taken to
prevent leakage of these gases, with consequent
risk of fire and explosion.
("
The process will produce metal spatter and eye "
and skin protection is necessary.
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I 00-00-21 General Information 1 00-00-21
DESCRIPTION AND OPERATION
Always disconnect the jumper cables in the reverse
order to the connecting sequence and do not short
i the ends of the cables.
Do not rely on the generator to restore a
discharged battery. For a generator to recharge a
battery, it would take in excess of eight hours
continuous driving with no additional loads placed
on the battery.
Component Cleaning
To prevent the ingress of dirt, accumulations of
loose dirt and greasy deposits should be removed
before disconnecting or dismantling components
or assemblies.
Components should be thoroughly cleaned before inspection prior to reassembly.
Cleaning Methods:
- Dry cleaning.
- Removal of loose dirt with soft or cable brushes.
- Scraping dirt off with a piece of metal or wood.
( ,- Wiping off with a rag.
A WARN1NG:Wear eye protection when
cleaning vehicle components with
compressed air, a steam cleaner or a
power washer. Failure to follow this
instruction may result in personal injury.
CAUTIONS:
A Compressed air is sometimes 'wet' so use
with caution, especially on hydraulic
systems.
A To prevent damage to the electrical
connectors in the engine compartment, do
not use a steam cleaner or a power washer
to clean the engine compartment.
- Blowing dirt off with compressed air.
- Removal of dry dust using vacuum equipment.
This method must always be used to remove
friction lining material dust (asbestos particles).
- Steam cleaning.
A WARN1NG:Most solvents require careful
handling and some are harmful. Refer to
Health and Safety Precautions and to the
manufacturers literature for the relevant
safety precautions. Failure to follow these
instructions may result in personal injury.
Various solvents are available which are suitable
for component cleaning. Some components, such
as brake hydraulic parts and electrical assemblies
should be cleaned only with recommended solvents
- refer to Solvents, Sealers and Adhesives or to
the section of the manual relevant to the
component.
Calibration of Essential Measuring
Equipment
A WARNING:Equipment, which requires
regular calibration, must be calibrated in
accordance with the manufacturers
instructions. Failure to follow this
instruction may result in personal injury
or damage to components.
It is of fundamental importance that certain
essential equipment, for example torque wrenches,
multimeters, exhaust gas analyzers or rolling roads,
are regularly calibrated in accordance with the
manufacturers instructions.
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100-04-2 Noise, Vibration and Harshness 100-04-2
DESCRIPTION AND OPERATION
Noise, Vibration and Harshness (NVH)
Noise, vibration and harshness (NVH) is becoming
more important as vehicles become more '
Know the History of the Condition
sophisticated and passenger comfort levels
increase. This section is designed to aid in the
- Did it start suddenly or appear gradually?
diagnosis and testing and repair of NVH concerns.
- Was it related to some other occurrence such
- Noise is defined as sounds not associated with
as a collision or previous part replacement?
the operation of passenger compartment
- Know how the condition made itself known; it
equipment that interface with customer
may be an important clue to the cause.
satisfaction.
- Vibration is defined as impulses felt by the
customer that are not caused by road surface Know the Probability of Certain
changes. Conditions Develop~ng
- Harshness is a ride quality issue where the - Look for the simple rather than the complex.
customer feels that the vehicle response to the
road surface is sharply transmitted to the
- For example:
customer.
- Electrical conditions usually occur at
connections rather than components.
Diagnostic Theory - An engine no-start is more likely to be caused
by a loose wire or small adjustment rather
than a sheared-off
camshafi. Diagnosis is more than just following a series of
interrelated steps in order to find the solution to the - Know the difference between impossible and
specific condition. It is a way of looking at systems improbable. Certain failures
in a system can be
that are not functioning the way they should and improbable
but still happen.
finding out why. Also it is knowing how the system
- New parts are just that, new. It does not mean
should work and whether it is working correctly. they are always
good functioning parts.
There are basic rules for diagnosis. If these rules
are followed, the cause of the condition is usually
Do Not Cure the Symptom and Leave
found the first time through the system. the Cause
Know the System
- Know how the parts go together. Lowering
the pressure in a front tire may correct
the condition of a vehicle leaning to one side, but
it does not correct the original condition.
- Know how the system operates as well as its
limits and what happens when the system goes
Be Positive the Cause is Found
wrong.
- Sometimes this means checking the system - Double check findings.
against one that is known to be working
- What caused a worn component?
correctly.
- A loose transmission or engine mount could
indicate that other mounts are also loose.
Know the History of the System
Diagnostic Charts
A clue in any one of these areas may save time:
- How old or new is the system? Charts are a simple
way of expressing the
relationship between basic logic and a physical
- What kind of treatment has it had?
system of components. They help discover the ,.
- Has it been serviced in the past in such a
cause of a condition in the least time. Diagnostic (,-
manner that might relate to the present
charts combine many areas of diagnosis into one
condition? visual display:
- What is the service history?
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