steering wheel FORD FIESTA 2007 User Guide

I 00-04-1 2 Noise, Vibration and Harshness I 00=04m12
DIAGNOSIS AND TESTING
Power Steering Hiss Noise
Test Condition
Listen for steering hiss noise with the vehicle
parked, transmission in neutral and all windows
-
closed in the following test conditions.
Power Steering Lock Stop Impact Knock 1. Turn the steering wheel to the left-hand and
Noise right-hand steering locks and listen for the
impact noise.
Test Condition
Listen for steering knock noise with the engine
speed at idle in the following test conditions (noise
also apparent with engine off).
Action
CHECK the installation and
potential damage of the floor seal.
Certain amount of noise level
acceptable, not a safety critical
item.
Certain amount of noise level
acceptable, not a safety critical
item.
Certain amount of noise level
acceptable, not a safety critical
item.
Symptom
N0TE:Engine speed at idle
turning the steering wheel slowly
lock to lock.
Power steering system hiss noise
- a high frequency, continuous
rush or swish noise like escaping
air from a balloon. Hiss occurs
while turning between the steering
lock stops, all steering angles.
Noise does not change with
engine rpm and is worse at high
operating temperatures.
N0TE:Engine speed at idle
holding the steering wheel against
a steering lock for three seconds.
Do not hold for more than five
seconds.
Power steering system hiss noise
- a continuous noise like escaping
air occurs while holding the
steering against a steering lock
stop.
Possible Sources
Floor seal.
Power steering gear valve design.
Power steering system hydraulic
design.
Power pump pressure
relief valve.
Power Steering Mechanical Knock Noise 1. Turn the steering wheel 90 degrees to the right,
(PAS off) hold and then quickly release.
2. Turn the steering wheel 90 degrees to the left, Test Condition hold and then quickly release.
Listen for steering knock noise with the engine off
in the following test conditions (no power assist).
2006.0 Fiesta 1212006 G37349en
Action
Certain amount of noise level
acceptable, not a safety critical
item.
Symptom
Power steering system knock
noise
- a heavy loud sound like a
knock on a door that occurs in
parking condition when hitting the
lock stop.
Possible Sources
Power steering gear mechanical
noise, metal to metal at end of
steering travel.
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100-04-13 Noise, Vibration and Harshness 100-04-13
DIAGNOSIS AND TESTING
Power Steering Mechanical Knock Noise 1. Turn the steering wheel to a steering lock and
(PAS on) return to center quickly.
2. Turn the steering wheel 90 degrees to the left
Test Condition and then 90 degrees to the right quickly.
Listen for steering knock noise with the engine
speed at idle in the following test conditions (power
assist).
Action
Certain amount of noise level
acceptable, not a safety critical
item.
Certain amount of noise level
acceptable, not a safety critical
item.
Symptom
Power steering system knock
noise - a heavy loud repeating
sound like a knock on a door that
occurs in several driving and
steering conditions.
Power Steering Hammer Knock (Hydraulic) 1. Turn the steering wheel to a steering lock
Noise position and return quickly.
Possible Sources
Power steering system knock
noise
- a damped, metallic knock
noise which only occurs at
steering condition with engine off
(very high efforts),
Tolerances in the steering gear
components.
Test Condition
Action
REFER to Steering System.
REFER to: Steering System (21
1 -
00, Diagnosis and Testing).
Symptom
Power steering system knock
noise - clear knock noise from
steering gear linkage area.
Listen for steering knock noise with the engine
speed at idle in the following test conditions (for
vehicles with hydraulic power assisted steering only, not electro-hydraulic power steering).
Possible Sources
Worn tie-rod ball joints (inner and
outer ball joints).
Symptom Possible Sources Action
hitting the suspension cross- Certain
amount of noise level
by pressure impulse in gear and
return line).
Power Steering Hydraulic KnocWClonk 1. Drive over cobbled roads at low speed 10-30
Noise kmlh (6-20 mph) with and without turning.
2. Drive over straight tar strips road rails or 25 mm
Test Condition tall harshness strips at low speed 10-30 kmlh
Listen for steering knocklclonk noise in the (6-20
mph) both driving straight and with
following test conditions with the windows closed. moderate turning.
2006.0 Fiesta 1212006 G37349en
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100-04-14 Noise, Vibration and Harshness 100-04-14
DIAGNOSIS AND TESTING
Power Steering Column Knock Noise I. Drive over cobbled stones at low speed 16-40
kmlh (1 0-25 mph) with and without steering
Test Condition input carefully listening for knock sounds.
Symptom
Power steering system knock1
clonk noise - sounds almost
identical to column knock that
occurs when driving and cornering
over cobbled stones or rough
roads. Noise may appear to
emanate from a location closer to
the floor than that for column
knock (Sounds like metallic noise
but is created by pressure impulse
in gear and return line
- similar to
a sound like quickly turning off a
water tap).
Listen for steering knock noise in the following test 2. Drive over straight tar strips, road rails or 25 mm
conditions with windows closed. tall
harshness strips at low speed 16-40
kmlh
(10-25 mph) both driving straight and with
moderate cornering.
Possible Sources
Power steering return lines.
High power assist gain of power
steering gear valve (steering gear
design
- no quality issue).
High power steering pump
flow
rate (by design).
Power Steering Toc-Toc Noise 1. Turn the steering wheel from left to right abruptly
changing direction.
Test Condition 2. Drive the vehicle for low speed parking
Listen for steering
toc-toc noise with the engine manoeuvres constantly changing steering
speed at idle and the vehicle parked, automatic direction.
transmission in "P" (PARK) or manual transmission
in neutral and the windows closed.
Action
Certain amount of noise level
acceptable, not a safety critical
item.
Certain amount of noise level
acceptable, not a safety critical
item.
Certain amount of noise level
acceptable, not a safety critical
item.
Symptom
Power steering system column
knock noise
- a loose sounding
rattle or vibration coming from the
column. Noticeable by hearing
and touch.
2006.0 Fiesta 1212006 G37349en
Possible Sources
Steering column or steering
column
Action
CHECK the steering column
retaining bolts and attachments
to the steering column and secure
if necessary.
REFER to: Specifications (21 1
-
04, Specifications).
Check steering column and inter- mediate shaft for free play or
loose components.
REFER to: Steering System (2 11
-
00, Diagnosis and Testing).
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100-04-15 Noise, Vibration and Harshness 100-04-15
DIAGNOSIS AND TESTING
Power Steering Grinding Noise 1. Slowly turn the steering wheel from lock to lock.
Test Condition
Action
Certain amount of noise level
acceptable, not a safety critical
item.
Symptom
Power steering system toc-toc
noise - a metallic noise created
when changing direction of
steering wheel rotation during
parking manoeuvre or at stand-
still.
2. Tilt and extend the steering column in various
positions and slowly turn the steering wheel
Possible Sources
gear (design tolerance
in steering rack).
Listen for steering grinding noise with the engine from lock to lock.
speed at idle and the vehicle parked, automatic
transmission in "P" (PARK) or manual transmission
in neutral and the windows closed.
Power Steering Zip Noise
Symptom Possible Sources Action
Power steering system grinding
noise
- an abrasive noise (like
sand paper rubbing against wood)
occurs between moving compon-
ents such as steering wheel and
the steering column shroud.
2006.0 Fiesta 1212006 G37349en
Steering wheel to shroud interfer-
ence.
Steering column bearing.
Foreign material in contact with
the steering column
shaft.
Clockspring.
Action
Certain amount of noise level
acceptable, not a safety critical item.
BLEED the power steering
system.
REFER
to: Power Steering
System Bleeding
(21 1-00
Steering System
- General
Information, General Proced-
ures).
Symptom
Power steering system zip noise
- occurs when hydraulic fluid
does not flow freely through the
power steering pump supply hose
from steering fluid reservoir to
power steering
pump causing
cavitation
at the pump. Zip is
primarily a cold weather start-up
phenomenon (below -1 0°C). Certain amount
of noise level
acceptable, not a safety critical
item.
Certain amount of noise level
acceptable, not a safety critical
item.
CHECK if floor covering is
obstructing the steering gear
pinion.
CHECK the installation of the floor
seal.
CHECK the clockspring and
secure if necessary.
REFER to: Clockspring (501
-208,
Removal and Installation).
Possible Sources
steering
Aeration of the power steering
fluid.
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100-04-16 Noise, Vibration and Harshness 100-04-1 6
DIAGNOSIS AND TESTING
Driveline Noise and Vibration
Suspension Noise and Vibration
Action
GO to Pinpoint Test A.
GO to Pinpoint Test
B.
GO to Pinpoint Test C.
Symptom
Shake and vibration while driving
Tip-in moan
Idle boomlshake/vibration/
shudder
Pinpoint Tests steps necessary to correct the condition. Then
check the operation of the system to make sure
N0TE:These Pinpoint Tests are designed to take the
condition has been corrected.
the technician through
a step-by-step diagnosis ~fi~~ verifying that the condition has been procedure to determine the cause of a condition. corrected, make sure all components removed It may not always be necessary to follow the chart have been installed. to its conclusion. Carry out only the pinpoint test
PINPOINT TEST A : SHAKE AND VIBRATION WHILE DRIVING
TEST CONDITIONS
DETAILSIRESU LTSIACTIONS 1
Possible Sources
Wheel end vibration.
. Engine/transmissiOnm
Air cleaner.
Power assisted steering.
Powertrain.
Powertrainldrivetrain mounts.
Exhaust system.
Cable(s)lhose(s).
Powertrainldrivetrain mounts.
Exhaust system.
Belt/ pulleys.
I A1 : NEUTRAL COAST I
Action
GO to Pinpoint Test D.
GO to Pinpoint Test E,
Symptom
Wheel end vibration analysis
Nan-axle noise
Carry out the neutral coast test.
Does the vibration disappear during the neutral
coast test?
+ Yes
GO to A2.
+ No
GO to Pinpoint Test D.
Possible Sources
Suspension.
. Wheel bearings,
Trim panels.
Air conditioning (A/C) system.
Accessories.
- --
2006.0 Fiesta 1212006 G37349en
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204-00-4 Suspension System - General Information 204-00-4
DIAGNOSIS AND TESTING
Suspension System
I I Alignment Pins, Subframe I
lnspection and Verification
Mechanical
Wheel knuckles
Tie-rod ends
Front suspension lower arm ball joints
Front suspension lower arm bushings
Front strut and spring assemblies
Front stabilizer bar and connecting links
Rear springs
Rear shock absorbers
Rear suspension beam axle and bushings
1.
Verify the customer concern.
I
2. Visually inspect for obvious signs of mechanical
damage.
3. If an obvious cause for an observed or reported Visual Inspection Chart concern is found, correct the cause (if possible)
I I Wheels and tires
Mechanical
Tire pressure(s)
Symptom Chart
before proceeding to the next step.
4. If the cause is not visually evident, verify the
symptom and refer to the Symptom Chart.
Symptom Chart
Symptom
Drift left or right
Possible Sources Action
Steering System (Diagnosis
and Testing),
Steering System
- 1.6L
Duratorq-TDCi (DV) Diesel
(Diagnosis and Testing).
Vehicle attitude incorrect (front
or rear is high or low).
Steering gear or linkage worn
or damaged.
I Brake system. I CHECK the brake system. I
CHECK for abnormal loading,
spring sag or non-standard
springs.
CHECK the steering system.
REFER to: (21 1-00 Steering
System
- General Information)
REFER to: Brake System (206-
00 Brake System
- General
Information, Diagnosis and
REFER to: Specifications (204-
'!
00 Suspension System -
i
General Information,
Specifications).
Incorrect wheel alignment.
2006.0 Fiesta 1212006 GI 49885en
Testing).
ADJUST the wheel alignment. ,'-
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204-00-5 Suspension System - General Information 204-00-5 --
DIAGNOSIS AND TESTING
Symptom Possible
Sources -
l ncorrect front crossmem ber
alignment.
Action
Using the special tool, CHECK
the front crossmember align- ment.
Worn front wheel bearings. CHECK
the wheel bearings.
REFER to: Wheel Bearing
lnspection (204-00 Suspen-
sion System
- General
Information, General Proced-
ures).
I Wheels and tires. I . GO to Pinpoint Test A. I
Steering wheel off-center Vehicle attitude incorrect (front
or rear is high or low).
Tracks incorrectly CHECK for abnormal loading,
spring sag or non-standard
springs.
-
Steering gear or linkage worn
or damaged. CHECK the steering system.
REFER to: (21 1-00 Steering
System
- General Information)
Steering System (Diagnosis and Testing),
Steering System
- 1.6L
Duratorq-TDCi (DV) Diesel
(Diagnosis and Testing).
Suspension lower arm ball
joint. CARRY
OUT the Ball Joint
lnspection component test in
this procedure.
lncorrect wheel alignment. ADJUST
the wheel alignment.
REFER to: Specifications (204-
00 Suspension System
-
General Information,
Specifications).
lncorrect front suspension toe,
castor or camber angles. CHECK
the wheel alignment.
REFER to: Specifications (204-
00 Suspension System
-
General Information,
Specifications).
INSTALL new suspension
components as necessary.
~ncorrecGar suspension toe
or camber angles. CHECK
the wheel alignment.
REFER to: Specifications (204-
00 Suspension System
-
General Information,
Specifications).
INSTALL new suspension
components as necessary.
2006.0 Fiesta 1212006 Gl49885en
Front or rear suspension
damage. INSTALL new
suspension
components as necessary.
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204-00-7 Suspension System - General Information 204-00-7
DIAGNOSIS AND TESTING
Possible Sources Action
1. Worn front wheel bearings I GO to Pinpoint Test B. I
I Wheels and tires I GO to Pinpoint Test B. I
Front or rear suspension
damage. CHECK and INSTALL new
suspension components as
necessary.
lncorrect wheel alignment. ADJUST the wheel alignment.
REFER to: Specifications (204-
00 Suspension System
-
General Information,
Specifications).
Damaged or worn front wheel
bearings. CHECK
the front wheel bear-
ings.
REFER to: Wheel Bearing
Inspection (204-00 Suspen-
sion System
- General
Information, General Proced-
ures).
Wheels and tires. CHECK the tires. BALANCE or
INSTALL new tires as neces-
sary.
I Incorrect wheel alignment. I ADJUST the wheel alignment.
REFER to: Specifications (204-
00 Suspension System
-
General Information,
Specifications).
Steering gear or linkage worn
or damaged. CHECK the steering system.
REFER to: (2
11 -00 Steering
System
- General Information)
Steering System (Diagnosis
and Testing),
Steering System
- I .6L
Duratorq-TDCi (DV) Diesel
(Diagnosis and Testing).
Front strut and spring assem-
1 blies. CARRY OUT
the Strut or
Shock Absorber Testing
component test in this
procedure.
CHECK and INSTALL new
suspension components as
necessary.
REFER to: Front Strut and
Spring Assembly (204-01
Front Suspension, Disas-
sembly and Assembly).
2006.0 Fiesta 1212006 G149885en
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204-00-8 Suspension System - General Information 204-00-8
DIAGNOSIS AND TESTING
Symptom Possible
Sources Action
Pinpoint Tests
Damaged front suspension
lower
arm(s).
PINPOINT TEST A : DRIFT LEFT OR RIGHT
TEST CONDITIONS
DETAILSIRESU LTSIACTIONS
INSTALL a new lower arm(s).
REFER to: Lower Arm (204-01
Front Suspension, Removal
and installation).
I
A WARNING:To avoid personal injury due to the loss of vehicle control, the inspection should
be carried out by two people to maintain safe driving conditions. Adequate grip should
always be maintained oh the steering wheel. Failure to follow these instructions may result
in personal injury.
N0TE:The following conditions must be met when evaluating the vehicle.
N0TE:The tire swapping procedures are for bi-directional rotating tires only.
Al: SWAP THE FRONT WHEEL AND TIRE ASSEMBLIES
Raise and support the vehicle. REFER to: (1 00-
02 Jacking and Lifting)
Jacking (Description and Operation), Lifting (Description and Operation).
- Swap the front left-hand wheel and tire
assembly with the front right-hand wheel and
tire assembly.
- Road test the vehicle.
Does the vehicle drift?
+ Yes
GO to A2.
+ No
Vehicle condition corrected.
2006.0 Fiesta 12/2006 G149885en
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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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