2007 FORD FIESTA Workshop Manual

21 1-00-1 Steering System - General Information 21 1-00-1
SECTION 211 -00 Steering System - General
Information
VEHICLE APPLICATION:2006.0 Fiesta
CONTENTS PAGE
SPECIFICATIONS
Specifications..
........................................................................\
............................................ 2 1 1 -00-2
DESCRIPTION AND OPERATION
Steering System
........................................................................\
......................................... 21 1-00-3
........................................................................\
................................................... Overview.. 2 1 1 -00-3
DIAGNOSIS AND TESTING
Steering System
........................................................................\
......................................... 2 1 1 -00-5
........................................................................\
............................... Principles of Operation 21 1-00-5
........................................................................\
......................... Inspection and Verification. 21 1-00-5
........................................................................\
.................................... Components Tests.. 21 1-00-14
........................................................................\
...... / Steering Gear Checks After a Collision 21 1-00-1 8

GENERAL PROCEDURES
...................................................................... Power Steering System Filling.. (1 3 002 0) 21 1-00-20
Power Steering System Bleeding
................................................................... (1 3 41 6 1) 21 1-00-21
Power Steering System Flushing
- 1.25L Duratec-1 6V (Sigma)/l.4L
......................................... Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma) (1 3 001 0) 21 1-00-23
......................... Power
Steering System Flushing - 2.OL Duratec-HE (M14) (1 3 001 0) 21
1-00-26
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21 1-00-2 Steering System - General Information 21 1-00-2
SPECIFICATIONS
Lubricants, Fluids, Sealers and Adhesives
Turning Circle Description
Power
steering fluid
Hydraulic fluid, vehicles with
1.6L Duratorq-TDCi (DV) Diesel
I Description I Meters I
Specifications
WSA-M2C195-A
WSS-M2C204-A2
I Wall to wall, vehicles with 2.OL Duratec-HE (M14) I 11.65 I
I Maximum allowable steering wheel misalignment I k 3.00" I
Steering Wheel Alignment
Turning Effort Description
Description
Nm Ib-in
Turning effort
Degrees
2006.0 Fiesta 1212006 GI I 2928en
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21 1-00-3 Steering System - General Information 21 1-00-3
DESCRIPTION AND OPERATION
Steering System
Overview
2006.0 Fiesta 1212006 G202090en
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21 1-00-4 Steering System - General Information 21 1-00-4
DESCRIPTION AND OPERATION
Item Descri~tion
A
RHD with Duratec 16V engine and Air
1 I Conditioning (NC)
I B I LHD with Duratec 16V engine and NC I
I C I RHD with Duratec 16V engine without AM: I
I D I LHD with Duratec 16V engine without NC I
I E ( RHD with 1.4L Duratorq TDCi engine I
I F I LHD with 1.4L Duratorq TDCi engine I
I I I Steering gear I
1 2 1 Additional cooling loop I
Independent of the equipment level, all vehicles
have conventional power-assisted rack and pinion
steering with an additional cooling loop.
The steering gear is supplied with hydraulic fluid
by a hydraulic pump.
The hydraulic pump is driven by the accessory
drive belt and has a separate reservoir.
Vehicles with petrol engines have a Power Steering
Pressure (PSP) switch in the pressure line, which
opens as the power steering load increases, thus
signalling to the Powertrain Control Module (PCM)
that it should increase the idle speed.
- - -- - -
2006.0 Fiesta 1212006 G202090en
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211 -00-5 Steering System - General Information 211 -00-5
DIAGNOSIS AND TESTING
Steering System
/ Special Tool(s)
Alignment Pins, Subframe
205-524
Simulator, Driver and
passenger ~ir Bags and Side
Air Curtains 50
1 -073A
General Eaui~ment
I Worldwide Diagnostic System (WDS) I
Principles of Operation
The steering wheel rotational movement is
transferred to the steering gear through the steering
column shaft. The steering gear converts this
rotational movement, through the action of the rack
and pinion gear into lateral movement. This
movement in turn is transferred to the wheel
knuckles through the tie-rods and tie-rod ends.
Hydraulic fluid under pressure is supplied to the
steering gear by the power steering pump. As the
steering wheel is rotated, the hydraulic fluid is
allowed to pass through the steering gear valve to
one side of a double acting piston, dependent on
which direction the steering wheel is rotated. The
fluid moves the piston, which forms part of the
steering gear, giving power assistance to the effort
required to rotate the steering wheel.
Vehicles with petrol engines, due to the extra load
on the engine imposed by the power steering
pump, have a power steering pressure (PSP)
switch. The switch, which is normally closed, sends a signal
to the powertrain control module (PCM)
during low speed parking manoeuvres. The PCM
responds by maintaining the engine idle speed.
lnspection and Verification
1. Verify the customer concern.
2. Visually inspect for obvious signs of mechanical
or electrical damage.
Visual lnspection Chart
I Mechanical I Electrical I
Tire pressure(s)
Accessory drive belt
Tie-rod ends
Tie-rod (s)
Steering gear housing
Front strut and
spring assemblies
Front suspension
lower arm ball joints
Front suspension
lower arm bushings
Pinch bolt on
steering column
shaft flexible coup-
ling Power
steering pres-
sure (PSP) switch
Wheels and tires
Power steering line
fluid leaks
Steering gear
bellows
3. If an obvious cause for an observed or reported
concern is found, correct the cause (if possible)
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 Possible Sources Action
Drift left or right
2006.0 Fiesta 1212006 Gl49906en
Vehicle attitude incorrect (front
or rear is high or low). CHECK for abnormal loading,
coil spring sag or non-standard
springs.
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211 -00-6 Steering System = General Information 21 1 =OO-6
DIAGNOSIS AND TESTING
Symptom Possible Sources Action
lncorrect wheel alignment. CHECK the wheel alignment
and adjust if necessary.
REFER to: (204-00 Suspension
System
- General Information) r
Specifications (Specifications), Front Toe Adjustment (General
Procedures).
lncorrect front axle cross-
member alignment.
Using the special tool, CHECK
the front axle crossmember
alignment.
Damaged or worn front wheel
bearings. CHECK and INSTALL new
front wheel bearings as neces-
sary.
REFER to: Front Wheel
Bearing (204-01 Front
Suspension, Removal and
Installation).
I CHECK the brake system. I
REFER to: Brake System (206-
00 Brake System
- General
Information, Diagnosis and
Testing).
CARRY OUT the steering
linkage component test.
REFER to Steering Linkage
Component Test in this
procedure.
CARRY OUT the steering
linkage component test.
REFER to Steering Linkage
Component Test in this
procedure.
Wheels and tires. I CHECK the wheels and tires. I
REFER to: Wheels and Tires
(204-04 Wheels and Tires,
Diagnosis and Testing).
Steering wheel 'off center Vehicle attitude incorrect (front
or rear is high or low). CHECK
for abnormal loading,
coil spring sag or non-standard
springs.
lncorrect wheel alignment. CHECK
the wheel alignment
and adjust if necessary.
REFER to: (204-00 Suspension
System
- General Information)
Specifications (Specifications),
Front Toe Adjustment (General
Procedures).
2006.0 Fiesta 1212006 GI 49906en
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21 1-00-7 Steering System - General Information 21 1-00-7
DIAGNOSIS AND TESTING
Symptom
Vibration
Possible Sources Action
Front suspension lower arm
ball joint. CHECK
and INSTALL new
suspension components as
necessary.
REFER to: Suspension System
(204-00 Suspension System
- General Information,
Diagnosis and Testing).
Steering linkage. CARRY OUT the steering
linkage component test. REFER to Steering Linkage
Component Test in this
procedure.
Steering gear. CARRY OUT the steering
linkage component test. REFER to Steering Linkage
Component Test in this
procedure.
Incorrect wheel alignment. CHECK the wheel alignment
and adjust if necessary.
REFER to: (204-00 Suspension
System
- General Information)
Specifications (Specifications), Front Toe Adjustment (General
Procedures).
Wheels and tires.
CHECK the wheels and tires.
BALANCE or INSTALL new
wheels and tires as necessary.
REFER to: Wheel and Tire
(204-04 Wheels and Tires,
Removal and
Installation).
Damaged or worn front wheel
bearings. CHECK
and INSTALL new
front wheel bearings as neces-
sary.
REFER to: Front Wheel
Bearing
(204-01 Front
Suspension, Removal and
Installation).
Front strut and spring assem-
blies. CHECK
and INSTALL new
suspension components as
necessary.
REFER to: Suspension System
(204-00 Suspension System
- General Information,
Diagnosis and Testing).
2006.0 Fiesta 1212006 GI 49906en
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21 1-00-8 Steering System - General Information 21 1-00-8
DIAGNOSIS AND TESTING
Symptom
Possible Sources Action
Damaged front suspension
lower arm(s).
CHECK and INSTALL new
suspension components as
necessary.
REFER to: Suspension System
(204-00 Suspension System
- General Information,
Diagnosis and Testing).
CARRY OUT the steering
linkage component test.
REFER to Steering Linkage
Component Test in this
procedure.
Steering effort is highllow Loose or worn accessory drive
belt.
CHECK the accessory drive
belt. REFER to: (303-05
Accessory Drive)
Power Steering Pump
Belt -
1.4L Duratec-1 6V
(Sigma)ll .6L Duratec-1 6V
(Sigma), Vehicles With: Air
Conditioning
(Removal and
Installation),
Accessory Drive Belt - 1.3L
Du ratec-8V (Rocam)
(Removal and lnstallation),
Accessory Drive Belt - I .4L
Duratec-I 6V
(Sigma)ll.6L
Duratec-1 6V (Sigma),
Vehicles Without: Air Condi-
tioning
(Removal and Installa-
tion),
Accessory Drive
Belt - 1.4L
Duratorq-TDCi (DV) Diesel
(Removal and lnstallation),
Accessory Drive Belt - 2.OL
Duratec-H E (M 14) (Removal
and lnstallation).
2006.0 Fiesta 1212006 GI 49906en
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