2007 FORD FIESTA Workshop Manual

204-04-1 Wheels and Tires 204-04-1
SECTION 204-04 Wheels and Tires
VEHICLE APPLICATION:2006.0 Fiesta
CONTENTS PAGE
SPECIFICATIONS
Specifications.. ........................................................................\
............................................ 204-04-2
DIAGNOSIS AND TESTING
Wheels and Tires ........................................................................\
........................................ 204-04-3
Inspection and Verification
........................................................................\
..................... 204-04-3
Symptom Chart
........................................................................\
...................................... 204-04-4
REMOVAL AND INSTALLATION
Wheel and Tire ........................................................................\
........................................... 204-04-8
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204-04-2 Wheels and Tires 204-04-2
SPECIFICATIONS
Toraue S~ecifications
Description
Wheel nuts
I Maximum lateral runout I 0.3 I 0.6 I
Wheel and Tire Assembly Runout Specifications
I Maximum radial runout I 0.3 I 0.5 I
Nm
90
Description
2006.0 Fiesta 1212006 G528128en
lb-ft
66
Alloy Wheel (mm) Ib-in
-
Steel
Wheel (mm)
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204-04-3 Wheels and Tires 204-04-3
DIAGNOSIS AND TESTING
Wheels and Tires
lnspection and Verification
Visual Inspection Chart
I Mechanical I
I Tire pressure(s) * I
I Wheel nuts I
I Wheel studs I
* Vehicles equipped with a tire pressure monitoring system must be inspected for correct operation
using the diagnostic tool.
To maximize tire performance, inspect the tires for
signs of incorrect inflation and uneven wear which
may indicate a need for balancing, rotation or
suspension alignment. Tires should also be
checked frequently for cuts, stone bruises,
abrasions, blisters and for objects that may have
become embedded in the tread. More frequent
inspections are recommended when rapid or ( extreme temperature changes occur or when road
surfaces are rough or occasionally littered with
foreign material.
As a further visible check of tire condition, tread
wear indicators are molded into the bottom of the
tread grooves. When these indicator bands become
visible, new tires must be installed.
Tire Wear Diagnosis
Uneven wear is usually caused by either excessive
camber or excessive toe on tires.
Sometimes incorrect toe settings or worn struts will
cause severe 'cupping' or 'scalloped' tire wear on
non-driven wheels.
Severely incorrect toe settings will also cause other unusual wear patterns.
Tire Vibration Diagnosis
A tire vibration diagnostic procedure always begins
with a road test. The road test and customer
interview (if available) will provide much of the
information needed to find the source of a vibration. During
the road test, drive the vehicle on a road
that is smooth and free of undulations. If vibration
is apparent, note and record the following:
- the speed at which the vibration occurs.
- what type of vibration occurs in each speed
range.
- mechanical or audible
- how the vibration is affected by changes in the
following:
- engine torque
- vehicle speed
- engine speed
- type of vibration - sensitivity:
- torque sensitive
- vehicle speed sensitive
- engine speed sensitive
The following explanations help isolate the source
of the vibration.
Torque Sensitive
This means that the condition can be improved or
made worse by accelerating, decelerating,
coasting, maintaining a steady vehicle speed or
applying engine torque.
Vehicle Speed Sensitive
This means that the vibration always occurs at the
same vehicle speed and is not affected by engine
torque, engine speed or the transmission gear
selected.
2006.0 Fiesta 1212006
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204-0414 Wheels and Tires 204-04-4
DIAGNOSIS AND TESTING
Engine Speed Sensitive A thumping noise usually means that the tire is flat
or has soft spots making a noise as they slap the
This means that the vibration occurs at varying
roadway. Tire whine can be distinguished from axle
vehicle speeds when a different transmission gear
noise. Tire whine remains the same over a range
is selected. It can sometimes be isolated by
of speeds.
increasing Or decreasing engine with the A complete road test procedure is described in transmission in NEUTRAL or by stall testing with Section the transmission in gear. If the condition is engine
speed sensitive, the-cause is probably not related
REFER to: Noise, Vibration and Harshness (NVH)
to the tires. (1
00-04 Noise, Vibration and Harshness,
If the road test indicates that there is tire whine, Diagnosis and
Testing).
but no shake or vibration, the noise originates with
the contact between the tire and the road surface.
Symptom Chart
Symptom Possible Sources Action
Tire(s) show excess wear on
edge of tread
I Vehicle overloaded. I CORRECT as necessary. I
Tire(s) under-inflated.
lncorrect wheel alignment. ADJUST the tire pressure(s).
ADJUST the wheel alignment.
REFER to: (204-00 Suspension
System
- General Information)
Specifications (Specifications), Front Toe Adjustment (General
Procedures).
Tire(s) show excess wear in Tire(s) over-inflated.
I I
ADJUST the tire pressure(s).
I center of tread
Other excessive tire wear Incorrect tire pressure(s).
concerns
need rotating.
ADJUST the tire pressure(s).
ROTATE the wheel and tire
assemblies.
lncorrect wheel alignment. ADJUST the wheel alignment.
REFER to: (204-00 Suspension
System
- General Information)
Specifications (Specifications), Front Toe Adjustment (General
Procedures).
I Vehicle overloaded.
Loose or leaking front strut and
spring assembly. CORRECT as necessary.
I
2006.0 Fiesta 1212006 G25362en
TIGHTEN
or INSTALL new
suspension components as
necessary.
REFER to: Shock Absorber
and Spring Assembly (204-01
,
Front Suspension, Removal
and Installation).
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204-04-5 Wheels and Tires 204-04-5
DIAGNOSIS AND TESTING
Symptom Possible Sources Action
Wheel bearings worn.
INSTALL new wheel bearings
as necessary. REFER to:
Front Wheel Bearing
(204-01
Front Suspension, Removal
and Installation),
Rear Wheel Bearing (204-02
Rear Suspension, Removal
and Installation).
Suspension components, bushings and ball joints. CHECK or INSTALL new
suspension components as
necessary.
Excessive lateral or radial
runout of wheel or tire. BALANCE
the wheel and tire
assemblies. Using a suitable
dial indicator gauge and
holding fixture, CHECK lateral
and radial
runout of the wheel
and tire assemblies. INSTALL
new wheel and tire assemblies
as necessary. REFER to: (204-
04 Wheels and Tires)
Specifications (Specifications),
Wheel and Tire (Removal and
Installation).
Damaged wheel. I INSPECT the wheel rims for
damage. BALANCE the wheel
and tire assemblies. Using a
suitable dial indicator gauge
and holding fixture, CHECK Wobble or shimmy affecting
wheel
runout
lateral and radial runout of the
wheel and tire assemblies.
INSTALL new wheel and tire
assemblies as necessary.
REFER to: (204-04 Wheels and
Tires)
Specifications (Specifications),
Wheel and Tire (Removal and
Installation).
Front wheel bearing. CHECK or INSTALL new wheel
bearings as necessary.
' REFER to: Front Wheel
Bearing (204-01 Front
Suspension, Removal and
Installation).
Excessive vehicle vibration,
rough steering Suspension components. CHECK or INSTALL new
suspension components as
necessary.
ADJUST the tire
pressure(s). Vehicle vibrations from wheels
and tires
2006.0 Fiesta 1212006 G25362en
Incorrect tire pressure(s).
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204-04-6 Wheels and Tires 204-04-6
DIAGNOSIS AND TESTING
Symptom Possible
Sources Action
Wheel or tire imbalance. BALANCE the
wheel and tire
assemblies.
Uneven tire wear.
,INSTALL a new tire(s) as
necessary.
REFER to: Wheel and Tire
(204-04 Wheels and Tires,
Removal and Installation).
1. Brake disc imbalance. CHECK
the brake disc for
foreign material.
I . Water in tire(s). I . REMOVE the water. I
Bent wheel. INSTALL
a new wheel and tire
assembly.
REFER to: Wheel and Tire
(204-04 Wheels and Tires,
Removal and Installation).
Incorrectly seated tire bead. SPIN the wheel on the vehicle.
EXAMINE the area where the
tire and the wheel meet. If that
section of the tire appears to
waver while being rotated, the
tire bead may not be correctly
seated on the wheel. REMOVE
the tire and CLEAN the bead
seat areas on both wheel and
tire.
Excessive lateral or radial
runout of wheel or tire. BALANCE the
wheel and tire
assemblies. Using a suitable
dial indicator gauge and
holding fixture, CHECK the
lateral and radial
runout of the
wheel and tire assemblies.
INSTALL new wheel and tire
assemblies as necessary.
REFER to: (204-04 Wheels and
Tires)
Specifications (Specifications),
Wheel and Tire (Removal and
Installation).
Foreign material between
wheel mounting face and hub
mounting surface. CLEAN mounting surfaces.
Front wheel bearing. CHECK
or INSTALL new wheel
bearings as necessary.
REFER to: Front Wheel
Bearing
(204-01 Front
Suspension, Removal and
Installation).
2006.0 Fiesta 12/2006 G25362en
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204-04-7 Wheels and Tires 204-04-7
DIAGNOSIS AND TESTING
Symptom
Rust streaks from the wheel
stud holes in the wheel
Seized wheel nuts
Possible Sources
Wheel nuts.
Corrosion.
Vehicle overloaded
Action
REMOVE the wheel and tire
assembly. Inspect the wheel
nuts and wheel and tire
assembly for damage.
INSTALL new wheel nuts and
wheel and tire assemblies as
necessary. REFER to: (204-04
Wheels and Tires)
Specifications (Specifications),
Wheel and Tire (Removal and
Installation).
CAUTION: Do not permit
lubricant 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: (204-04
Wheels and Tires)
Specifications (Specifications),
Wheel and Tire (Removal and
Installation).
If the condition persists,
LUBRICATE the first three
threads of each wheel stud with
a graphite-based lubricant.
CORRECT as necessary.
2006.0 Fiesta 1212006 G25362en
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204-04-8 Wheels and Tires 204-04-8
REMOVAL AND INSTALLATION
Wheel and Tire
Removal
A CAUTI0N:Do not use heat to loosen a
seized wheel nut. Heat may damage the
wheel and wheel hub.
I. Loosen the wheel nuts.
2. Raise and support the vehicle. For additional
information, refer to Section
100-02 [Jacking
and Lifting].
3. Remove the wheel and tire assembly.
Installation
AWARNING:R~~~~~ the corrosion or dirt
from the mounting surfaces of the wheel,
wheel hub, brake drum or brake disc, as this
may cause the wheel nuts to loosen and the
wheel to come off while the vehicle is in
motion. Failure to follow this instruction may
result in personal injury.
Clean the wheel hub and mounting surfaces.
2. install the wheel and tire assembly.
3. Lower the vehicle.
4. Tighten the wheel nuts in a diagonally
opposed pattern.
2006.0 Fiesta 1212006 GI 7437en
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