2007 FORD FIESTA section 4

100-04-1 Noise. Vibration and Harshness 100-04-1
SECTION 100-04 Noise. Vibration and Harshness
VEHICLE APPLICATION:2006.0 Fiesta
CONTENTS PAGE
DESCRIPTION AND
OPERATION
Noise. Vibration and Harshness (NVH) ........................................................................\
...... 1 00-04-2
........................................................................\
....................................... Diagnostic Theory 1 00-04-2
........................................................................\
........................................ Know the System 1 00-04-2
........................................................................\
................. Know the History of the System 100-04-2
Know the History of the Condition
........................................................................\
.............. 100-04-2
Know the Probability of Certain Conditions Developing
..................................................... 100-04-2
Do Not Cure the Symptom and Leave the Cause
............................................................ 100-04-2
Be Positive the Cause is Found
........................................................................\
................. 100-04-2
........................................................................\
....................................... Diagnostic Charts 1 00-04-2
DIAGNOSIS AND TESTING
Noise. Vibration and Harshness (NVH) ........................................................................\
...... 1 00-04-4
........................................................................\
.......................... Inspection and Verification 100-04-4
........................................................................\
....................... Noise Diagnostic Procedure 1 00-04-4
........................................................................\
................................................... Road Test 100-04-5
........................................................................\
............................ Road Test Quick Checks 100-04-5
Road Conditions
........................................................................\
......................................... 100-04-6
........................................................................\
.................................... Vehicle Preparation 1 00-04-6
........................................................................\
......................... Power Steering Conditions 100-04-6
........................................................................\
..... Power Steering Operation Noise Check 100-04-6
........................................................................\
........................................... Symptom Chart 1 00-04-9
Pinpoint Tests
........................................................................\
............................................. 100-04-1 6
GENERAL PROCEDURES
PowertrainlDrivetrain Mount Neutralizing ................................................. (1 4 001 0) 100-04-23
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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?
2006.0 Fiesta 12/2006 G28448en
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100-04-4 Noise, Vibration and Harshness 100-0414
DIAGNOSIS AND TESTING
Noise, Vibration and Harshness (NVH)
Inspection and Verification
1. Verify the customer concern. Identify the Condition
2. Visually inspect for obvious signs of mechanical NVH usually occur in four areas:
or electrical damage.
tires
3. If an obvious cause for an observed or reported
concern is found, correct the cause (if possible) engine accessories
before proceeding to the next step.
suspension
4. If the concern is not visually evident, verify the
symptom and REFER to the Symptom Chart.
How to Use this Diagnostic Procedure
Section
Noise, vibration and harshness (NVH) concerns
have become more important as
vehjcles have
become more sensitive to these vibrations. This
section is designed to aid in identifying these
concerns.
The section provides diagnostic procedures based on symptom. If the condition occurs at
high speed, for instance, the most likely place
to start is under Shake and Vibration While
Driving.
The road test procedure will tell how to sort the
conditions into categories and how to tell a
vibration from a shake.
A series of Road Test Quick Checks are
provided to make sure that a cause is either
pinpointed or eliminated.
Name the condition, proceed to the appropriate
section and locate the correct diagnosis. When
the condition is identified, the job is partly done.
Follow the diagnostic procedure as outlined.
Quick Checks are described within the step,
while more involved tests and adjustments are
outlined in General Procedures.
Always follow each step exactly and make notes
to recall important findings later.
driveline
It is important, therefore, that an NVH concern be
isolated into its specific
area(s) as soon as
possible. The easiest and quickest way to do this
is to carry out the Road Test as outlined. To assist
in the diagnosis and testing
procedure(s), use a
suitable approved NVH diagnosis tester.
Noise Diagnostic Procedure
Non-Axle Noise
The five most common sources of non-axle noise
are exhaust, tires, roof racks, trim panels and
( transmission.
Therefore, make sure that none of the following
conditions are the cause of the noise before
proceeding with a driveline
teardown and
diagnosis.
In certain conditions, the pitch of the exhaust
may sound very much like gear noise. At other
times, it can be mistaken for a wheel bearing
rumble.
Tires, especially snow tires, can have a high
pitched tread whine or roar, similar to gear
noise. Radial tires may have this characteristic.
Also, any non-standard tire with an unusual
tread construction may emit a roar or whine
noise.
Trim panels can also cause whistling or whining
noise.
Clunk may be a metallic noise heard when the
Customer Interview automatic transaxle is engaged in "R
(REVERSE) or "D" (DRIVE) or it may occur
The road test and customer interview (if available) when
the throttle is applied or released. It is
provide information that will help identify the caused
by backlash somewhere in the driveline.
,
concern and will provide direction to the correct Bearing rumble sounds like marbles being
starting point for diagnosis. (
tumbled. This condition is usually caused by a
damaged wheel bearing.
2006.0 Fiesta 1212006 G37349en
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204-00-1 Suspension System - General Information 204-00-I
SECTION 204-00 Suspension System - General
lnformation
VEHICLE APPLICATION:2006.0 Fiesta
CONTENTS PAGE
SPECIFICATIONS
Specifications.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204-00-2
DIAGNOSIS AND TESTING
Suspension System ........................................................................\
.................................... 204-00-4
Inspection and Verification
........................................................................\
.......................... 204-00-4
Symptom Chart..
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204-00-4
Pinpoint Tests
........................................................................\
............................................. 204-00-8
Component Tests..
.... . . ...... .. .. . . .... .. . . .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204-00-1 4
GENERAL PROCEDURES
Wheel Bearing Inspection ....... . .. .. .. . . . . ...... .... .. . . . . . . . . . . . . . . ...... . . . . . . . . . . . . . . . . . . . . . . . . . . 204-00-1 6
Front Toe Adjustment ........................................................................\
......... (14 11 7 0) 204-00-1 7
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204-01 -1 Front Suspension 204-01 -1
SECTION 204-01 Front Suspension
VEHICLE APPLICATION:2006.0 Fiesta
CONTENTS
SPECIFICATIONS
Specifications.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.DESCRIPTION AND OPERATION
Front Suspension ........................................................................\
........................................
DIAGNOSIS AND TESTING
Front Suspension ........................................................................\
........................................
PAGE
REMOVAL AND INSTALLATION
Front Stabilizer Bar Bushing ...... .... . . . . . . .. . . .. . . .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (14 754 0)
204-01 -6
Lower Arm ........................................................................\
.............................. (14 706 0) 204-0 1 -7
Front Stabilizer Bar ........................................................................\
................. (14 752 0) 204-0 1 -9
Wheel Knuckle.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (1 4 343 0)
204-01 -1 3
i Front Strut and Spring Assembly ................................................................... (14 781 0) 204-01-19
Front Wheel Bearing ........................................................................\
........... (14 411 0) 204-01 -21
DISASSEMBLY AND ASSEMBLY
Front Strut and Spring Assembly ............................................................... (14 783 4)
204-01 -23
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204-01 -2 Front Suspension 204-01 -2
SPECIFICATIONS
I Top mount retaining nuts I 25 I 18 I - I
Torque Specifications
I Thrust bearing retaining nut I 48 I 35 I - I
Stabilizer bar connecting link to strut and spring
retaining nut Ib-in
I Wheel
knuckle to suspension strut pinch bolt I 85 I 63 I - I
Ib-ft Item Nm
Brake caliper anchor plate retaining bolts
Lower arm ball joint to wheel knuckle retaining nut
I Steering gear retaining bolts I 48 I 35 I - I
Tie-rod end retaining nut
Stabilizer bar clamp retaining bolts
Stabilizer bar to connecting link retaining nut
Fb.wer arm front retaining bolt I
70
48
I Lower arm rear clamp retaining bolts I 55 I 41 I - I
48
55
55
I Crossmember front retaining bolts I 70 I 52 I - I
52
35
I Crossmember rear retaining bolts 1 Iq5 1 85 I - I
-
-
35
41
41
I Crossmember inner and outer retaining bolts 1 175 1 129 1 - I
-
-
-
I Wheel hub retaining nut 1290 1214 1 - I
I Engine support insulator center bolt I 48 I 35 I - I
2006.0 Fiesta 1212006 GI 52539en
Wheel speed sensor retaining nut
a) Refer to the procedure in this section.
9 - 80
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204-01 -5 Front Suspension 204-01 -5
DIAGNOSIS AND TESTING
Front Suspension
! REFER to Section 204-00 [Suspension System -
General Information].
2006.0 Fiesta 1212006 GI 7395en
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204-01 -6 Front Suspension 204-01 -6
REMOVAL AND INSTALLATION
Front Stabilizer Bar Bushing(l4 754 0)
Removal 2. Install the stabilizer bar.
1. Remove the stabilizer bar.
For additional information, refer to Stabilizer
Bar in this section.
2. Remove the stabilizer bar bushings on both
sides. For
additional information, refer to Stabilizer
Bar in this section.
Installation
1. CAUTIONS:
ADO not lubricate the stabilizer bar
bushings.
AThe stabilizer bar bushings must be
positioned with the slot facing forwards of
the stabilizer bar.
AThe stabilizer bar bushings must be
positioned as shown.
N0TE:The location of the stabilizer bar bushings
should be measured from the center mark on the
stabilizer bar.
Install the stabilizer bar bushings.
2006.0 Fiesta 1212006 G89069en
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