2007 FORD FIESTA wheel

206-04-1 0 Rear Disc Brake 206-04-1 0
REMOVAL AND INSTALLATION
Brake Disc(l2 225 0) /'
Removal
1. Release the parking brake.
2. Remove the wheel and tire.
For additional information, refer to: Wheel
and Tire (204-04 Wheels and Tires, Removal
and Installation).
3. Detach the brake hose from the brake hose
support bracket.
4a &AUTION:S~~~~~~ the brake caliper and
brake caliper anchor plate assembly to
prevent load being placed on the brake hose.
Detach the brake caliper and brake caliper
anchor plate assembly from the wheel
spindle (parking brake cable shown removed
for clarity).
Remove the brake disc retaining clip (if (-
equipped).
Installation
1. To install, reverse the removal procedure.
5. Remove the brake disc.
2006.0 Fiesta 1212006 G427697en
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206-04-1 1 Rear Disc Brake 206-04-1 I
REMOVAL AND INSTALLATION
Brake Disc Shield
General Equipment Using an electric hand drill, remove the rivets.
I Electric hand drill I
I Blind rivet gun I
Removal
1. Remove the brake disc.
For additional information, refer to: Brake
Disc
(206-04 Rear Disc Brake, Removal and
Installation).
2. Detach the wheel speed sensor from the
wheel spindle.
3. Remove the wheel spindle and wheel hub
assembly.
4. Remove the brake disc shield.
Installation
~CAUTION:M~~~ sure that the mating faces
are clean and free from rust and foreign
material.
N0TE:Using a blind rivet gun, install new rivets.
To install, reverse the removal procedure.
2006.0 Fiesta 1212006 G427698en
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206-05-7 Parking Brake and Actuation 206-05-7
DIAGNOSIS AND TESTING
B1: CHECK PARKING BRAKE CONTROL
rn Raise and support the vehicle on a lift with the
parking brake fully applied.
REFER to: Lifting
(1 00-02, Description and
Operation).
- With the aid of another technician, release the
parking brake and check the operation of the
brake cables and levers.
Did the parking brake release?
+ Yes
CHECK the other causes such as conven-
tional brake system components. REPAIR or
INSTALL new components as necessary.
+ No
GO to B2.
B2: CHECK PARKING BRAKE CABLES
rn Loosen the parking brake cable tension.
- Rotate the rear wheels by hand.
Did the rear wheels turn freely?
+ Yes
INSTALL a new parking brake control.
REFER to: Parking Brake Control (206-05,
Removal and Installation).
TEST the system for normal operation.
+ No
GO to
83.
B3: CHECK FRONT PARKING BRAKE CABLE
Disconnect the parking brake front cable and
conduit from the rear brake cable and conduit
at the equalizer.
- Rotate the rear wheels by hand.
Did the rear wheels turn freely?
+ Yes
INSTALL a new front parking brake cable and
conduit.
REFER to: Parking Brake Cable (206-05,
Removal and Installation).
TEST the system for normal operation.
+ No
GO to
B4.
i
2006.0 Fiesta 1212006 GI 7495en
PINPOINT TEST B : THE PARKING BRAKE WILL NOT RELEASE
TEST CONDITIONS
DETAl LSIRESU LTSIACTIONS
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206-05-8 Parking Brake and Actuation 206-05-8
DIAGNOSIS AND TESTING
TEST CONDITIONS
B4: CHECK REAR PARKING BRAKE CABLES
Disconnect the parking brake at the rear brakes,
one at a time.
- Rotate the wheel affected by the disconnected
parking brake.
Did the wheel turn freely?
-+ Yes
INSTALL a new parking brake control lever
on the rear drum brakes or caliper assembly
on rear disc brakes.
REFER to: Brake Shoes (206-02 Drum Brake,
Removal and Installation)
I Brake Caliper (206-04, Removal and Install-
ation).
TEST the system for normal operation.
-+ No
REFER to: Brake System (206-00, Diagnosis
and Testing).
2006.0 Fiesta 1212006 GI 7495en
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206-05-1 0 Parking Brake and Actuation 206-05-1 0 -- -
GENERALPROCEDURES
9. Install the brake backing plate inspection 12. Install the parking brake control trim panel.
cover on both sides (left-hand side shown).
,-
10. Check the parking brake cable adjustment
in two stages.
Stage I : Raise and release the parking brake
control and check that it returns to the fully
released position.
If the parking brake control
does not fully release, repeat the adjustment
procedure.
Stage 2: Rotate the rear wheels and check
for brake drag. If brake drag is felt, loosen
the parking brake cable adjustment nut two
full turns and repeat the adjustment
procedure.
11. Install a new parking brake cable
adjustment nut retaining clip.
2006.0 Fiesta 1212006 Gl49892en
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206-05-1 1 Parking Brake and Actuation 206-05-1 1
GENERAL PROCEDURES
Parking Brake Cable Adjustment - Vehicles With: Rear Disc
1. Remove the parking brake control trim panel. Stage 5: Depress the brake pedal firmly 15
times.
6. Release the parking brake.
7. Raise and support the vehicle. For additional
information, refer to: (1
00-02 Jacking and
Lifting)
Jacking (Description and Operation),
Lifting (Description and Operation).
8. N0TE:Make sure that the parking brake
control is fully released.
Adjust the parking brake cable in
2 stages.
Stage 1 : With the aid of another technician,
tighten the parking brake cable adjustment
2.
Loosen the parking brake cable adjustment nut until both the parking brake actuating
nut to the end of the thread. levers start to move (left-hand parking brake
Discard the retaining clip. actuating lever
shown). Stage 2: Tighten the parking brake cable
adjustment nut until the total movement
between both the parking brake actuating
levers and the stops, when added together,
is between 0.5 mm and 2.0 mm (left-hand
parking brake actuating lever shown).
3. Release the parking brake.
4. Make sure that the parking brake cable is
correctly located.
5. N0TE:Prior to carrying out adjustment to a
new or relocated parking brake cable, settle
the parking brake system.
9. Check the parking brake cable adjustment
Settle the parking brake system in
5 stages.
Stage 1 : Raise the parking brake control 4
notches.
Stage 2: Tighten the parking brake cable
adjustment nut until increased torque is
detected.
Stage 3: Operate the parking brake control
firmly
10 times.
Stage 4: Loosen the parking brake cable
adjustment nut to the end of the thread.
in 2 stages.
Stage 1 : Raise and release the parking brake
control and check that it returns to the fully
released position. If the parking brake control
does not fully release, repeat the adjustment
procedure.
Stage 2: Rotate the rear wheels and check
for brake drag. If brake drag is felt, loosen
the parking brake cable adjustment nut 2 full
turns and repeat the adjustment procedure.
10. Lower the vehicle.
2006.0 Fiesta 1212006 G458899en
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206-0713 Power Brake Actuation 206-0713
DESCRIPTION AND OPERATION
Brake Booster
Emergency brake assistant (EBA) EBA operates purely mechanically, and is
completely integral with the brakeservo.
As ABS braking systems have become widespread,
it has emerged that because of incorrect use of the
Brake servo units with and without EBA are
brakes, many drivers are losing the safety benefit externally identical. For identification purposes,
which ABS
~rovides. brake servo units with EBA carry a white sticker I showing a large letter "A. Drivers are applying the brakes too timidly.
Because of this, the Anti-lock Braking System The tandem master cylinder
is the same for
(ABS) does not engage, and the maximum braking
vehicles with or without
effect is not achieved.
The EBA recognises from the driver's manner of
braking that an emergency situation is occurring,
and automatically applies full braking power.
This occurs in a matter of milliseconds, which is
faster than the driver could do it.
Furthermore, it was observed that after the first
heavy application of the brake pedal, the driver
releases the pressure on the pedal too early.
The EBA ensures that the ABS effect still continues
when the pedal pressure would normally lie below
the ABS range of control. The system is available
j as an option depending on market and vehicle
variant.
Function
In normal braking situations, the brake servo with
EBA operates in the same way as a conventional
brake servo unit. This means that the driver can
always modulate the brakes.
If an activation threshold defined by a characteristic
curve is exceeded during braking, the EBA
operates.
Determination of the activation threshold is based
on the pedal movement parameters, which are a
function of the pressure on the brake pedal and
the speed of movement of the pedal.
Depending on driving manner, EBA results in a The characteristic curve
is separately defined for
reduction in braking distance of 15% for each vehicle model.
experienced drivers, to over
40% for average The mechanical EBA uses the fact that in a brake
drivers. servo unit, the valve piston moves ahead of the
Because EBA decelerates the vehicle up to the control housing
when a braking operation starts.
wheel locking limit, emergency brake assist is only Because of this, there is a relative travel distance used in vehicles with ABS.
between the control housing and the valve piston
which can vary depending on the force applied to
Components the brake pedal and the pedal speed.
The relative travel distance is small when the pedal
moves slowly with low force applied to it. The
relative travel distance is larger when the pedal
moves faster with higher force applied to it.
Item Description
-
2006.0 Fiesta 1212006 GI 63289en
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206-07-5 Power Brake Actuation 206-07-5
DESCRIPTION AND OPERATION
Item Description
1 3 I Valve piston I
i '
1 4 1 Ball I
1 5 1 ~ock sleeve I
I
2
1 6 1 Ball cage I
Ball sleeve
Control housing
Active brake assistant
In a normal braking operation, pedal operation
causes the relative travel distance to remain so
small that the distance required for engagement is
not exceeded.
The lock sleeve is held in its rest position by the
force applied by the spring, the ball cage remains
free to move axially and the balls remain free to
move radially.
Item Description
I 1 I Relative travel distance I
1 2 1 Disc valve I -
1 3 1 Key I
If the activation threshold level is.exceeded
because of an emergency braking situation, i.e.
the relative travel distance of the valve piston is so
great that the balls are moved in over the slope of
the ball sleeve, then the lock sleeve can move
completely to its end position.
I
--
The balls are now locked, and the ball sleeve can
no longer be moved in the closing direction of the
disc valve.
The EBA is now active, the brake pressure is
increased up to the wheel locking limit, and the
brake pedal can be moved to its maximum
pressure point without effort.
The brake pressure remains at the ABS control
limit until the EBA is completely released again.
2006.0 Fiesta 1212006 GI 63289en
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