brake sensor FORD GRANADA 1985 Service User Guide

Chapter 10
Braking system
ABS module - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . .25
Brake discs - inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Brake hydraulic system - bleeding . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Brake hydraulic system - fluid renewal . . . . . . . . . . . . . . . . . . . . . . .3
Brake pedal - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . .14
Brake pipes and hoses - inspection, removal and refitting . . . . . . .21
Control module (April 1992 on) - removal and refitting . . . . . . . . . .31
Front brake disc - removal and refitting . . . . . . . . . . . . . . . . . . . . . . .5
Front brake pads - inspection and renewal . . . . . . . . . . . . . . . . . . . .7
Front caliper - overhaul . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Front caliper - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . .9
G (gravity) switch (April 1992 on) - removal and refitting . . . . . . . . .33
General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Handbrake cable - adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Handbrake cable - removal and refitting . . . . . . . . . . . . . . . . . . . . .23
Handbrake control lever - removal and refitting . . . . . . . . . . . . . . . .24
Hydraulic unit - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . .15
Hydraulic unit accumulator - removal and refitting . . . . . . . . . . . . .17Hydraulic unit fluid reservoir - removal and refitting . . . . . . . . . . . .16
Hydraulic unit hoses - removal and refitting . . . . . . . . . . . . . . . . . . .20
Hydraulic unit pressure switch - removal and refitting . . . . . . . . . . .19
Hydraulic unit pump and motor - removal and refitting . . . . . . . . . .18
Master cylinder (April 1992 on) - removal and refitting . . . . . . . . . .27
Pedal Travel Sensor (PTS) (April 1992 on) - removal and refitting . .32
Rear brake disc - removal and refitting . . . . . . . . . . . . . . . . . . . . . . .6
Rear brake pads - inspection and renewal . . . . . . . . . . . . . . . . . . . .8
Rear caliper - overhaul . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Rear caliper - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . .11
Rear disc splash shield - removal and refitting . . . . . . . . . . . . . . . .13
Vacuum servo unit (April 1992 on) - testing, removal and refitting .28
Vacuum servo unit check valve (April 1992 on) - removal, testing and
refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Valve block and pump assembly (April 1992 on) - removal and
refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Wheel sensors - removal and refitting . . . . . . . . . . . . . . . . . . . . . . .26
General
System type: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Discs all round, hydraulic operation, anti-lock braking system
(ABS). Handbrake by mechanical operation of rear calipers
System make:
Models up to April 1992 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Teves MK II ABS
Models from April 1992 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Teves MK IV ABS
Hydraulic system
Fluid type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic fluid to Ford spec SAM-6C9103-A
Operating pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 to 190 bar (1885 to 2755 lbf/in2)
Pressure warning switch operates at . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 to 110 bar (1450 to 1595 lbf/in2)
Brake pads
Lining minimum thickness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 mm (0.06 in)
Brake discs
Run-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.15 mm (0.006 in) maximum
Thickness variation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.015 mm (0.0006 in) maximum
Minimum thickness:
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 mm (0.87 in)
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cast into outer rim (typically 8.9 mm/0.35 in)
Rear - Estate models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 mm (0.71 in)
10•1
Easy,suitable for
novice with little
experienceFairly easy,suitable
for beginner with
some experienceFairly difficult,
suitable for competent
DIY mechanicDifficult,suitable for
experienced DIY
mechanicVery difficult,
suitable for expert
DIY or professional
Degrees of difficulty
Specifications Contents
10
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Models covered in this Manual have disc
brakes fitted all round. The footbrake operates
hydraulically on all four wheels, and the
handbrake operates mechanically on the rear
wheels. Both footbrake and handbrake are
self-adjusting in use.
Ford’s anti-lock braking system (ABS) is
fitted to all models. The system monitors the
rotational speed of each roadwheel. When a
wheel begins to lock under heavy braking, the
ABS reduces the hydraulic pressure to that
wheel, so preventing it from locking. When this
happens a pulsating effect will be noticed at
the brake pedal. On some road surfaces the
tyres may squeal when braking hard even
though the wheels are not locked.
The main components of the system are the
hydraulic unit, the calipers, pads and discs,
the wheel sensors and the “brain” or control
module. The hydraulic unit contains the
elements of a traditional master cylinder, plus
an electric motor and pump, a pressure
accumulator and control valves. The pump is
the source of pressure for the system and
does away with the need for a vacuum servo.
The hydraulic circuit is split front and rear,
as is normal practice with rear-wheel drive
vehicles. In the event that the hydraulic pump
fails, unassisted braking effort is still available
on the front calipers only.
Warning lights inform the driver of low brake
fluid level, ABS failure and (on some models)
brake pad wear. The low fluid level light
doubles as a “handbrake on” light; if it
illuminates at the same time as the ABS
warning light, it warns of low hydraulic
pressure.
ABS cannot overturn the laws of physics:
stopping distances will inevitably be greater on
loose or slippery surfaces. However, the system
should allow even inexperienced drivers to
retain directional control under panic braking.
From August 1986 the following
modifications were made to the braking
system.
a)The relays differ from earlier versions.b)The hydraulic pump is constructed of iron
rather than alloy.
c)A new pressure warning switch is used.
d)The earlier high pressure rubber hose is
replaced by a steel pipe.
To overcome the problem of excessive rear
brake pad wear, Ford introduced a differential
valve which is screwed into the ABS valve
block.The valve limits the pressure applied to
the rear brake calipers and so reduces brake
pad wear. From 1988 onwards, the valve has
been fitted during production. The differential
valve can also be fitted to earlier models. Refer
to your Ford dealer for further information.
From April 1992 onwards, the models
covered in this Manual were equipped with a
new Teves MK IV anti-lock braking system
instead of the Teves MK II system fitted to the
earlier models.
The Teves MK IV system differs from the
earlier MK II system in the following ways.
a)The source of hydraulic pressure for the
system is a conventional master cylinder
and vacuum servo assembly.
b)A valve block and pump assembly is used
instead of the hydraulic control unit. The
block contains the inlet and outlet
solenoid valves that control the hydraulic
system. There are three pairs of valves,
one for each brake circuit (paragraph c).
c)The hydraulic braking system consists of
three separate circuits; one for each front
brake (which are totally independent of
each other), and a joint circuit which
operates both rear brakes.
d)A G (gravity) switch is incorporated in the
system. This is an inertia type switch and
informs the control module when the
vehicle is decelerating rapidly.
e)A Pedal Travel Sensor (PTS) is fitted to the
vacuum servo unit. The PTS informs the
control module of the position of the brake
pedal when the anti-lock sequence starts
and ensures that a constant pedal height
is maintained during the sequence.
The MK IV system operates as follows.
During normal operation the system
functions in the same way as a non-ABS
system would. During this time the three inlet
valves in the valve block are open and theoutlet valves are closed, allowing full hydraulic
pressure present in the master cylinder to act
on the main braking circuit. If the control
module receives a signal from one of the
wheel sensors and senses that a wheel is
about to lock, it closes the relevant inlet valve
in the valve block which then isolates the
brake caliper on the wheel which is about to
lock from the master cylinder, effectively
sealing in the hydraulic pressure. If the speed
of rotation of the wheel continues to decrease
at an abnormal rate, the control module will
then open the relevant outlet valve in the valve
block; this allows the fluid from the relevant
hydraulic circuit to return to the master
cylinder reservoir, releasing pressure on the
brake caliper so that the brake is released. The
pump in the valve block also operates to assist
in the quick release of pressure. Once the
speed of rotation of the wheel returns to an
acceptable rate the pump stops, the outlet
valve closes and the inlet valve is opened,
allowing the hydraulic master cylinder
pressure to return to the caliper which then
reapplies the brake. This cycle can be carried
many times a second. The solenoid valves
connected to the front calipers operate
independently, but the valve connected to the
rear calipers operates both calipers
simultaneously.
The operation of the ABS system is entirely
dependent on electrical signals. To prevent
the system responding to any inaccurate
signals, a built-in safety circuit monitors all
signals received by the control module. If an
inaccurate signal or low battery voltage is
detected, the ABS system is automatically
shut down and the warning lamp on the
instrument cluster is illuminated to inform the
driver that the ABS system is not operational.
Whilst in this state the system functions in the
same way as a non-ABS system would. If a
fault does develop in the ABS system, the car
must be taken to a Ford dealer for fault
diagnosis and repair. The system is equipped
with a diagnostic plug into which a special
diagnostic (STAR) tester can be plugged. This
allows faults to be easily traced.
1General information
10•2Braking system
Torque wrench settingsNmlbf ft
Front caliper:
To stub axle carrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51 to 6138 to 45
Slide bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 to 2515 to 18
Rear caliper:
Bracket to carrier plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51 to 6138 to 45
Slide bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 to 3523 to 26
Hydraulic unit to bulkhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 to 5130 to 38
Accumulator to pump body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 to 4526 to 33
Pump mounting bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 to 95 to 7
High pressure hose banjo bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 to 2412 to 18
Reservoir mounting bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 to 63 to 4
Wheel sensor fixing bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 to 116 to 8
Vacuum servo unit retaining nuts (Teves MK IV) . . . . . . . . . . . . . . . . . .35 to 4526 to 33
Master cylinder retaining nuts (Teves MK IV) . . . . . . . . . . . . . . . . . . . . .20 to 2515 to 18
Valve block and pump assembly mounting nuts (Teves MK IV) . . . . . . .21 to 2815 to 21
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17Refit the washer, spring and spring cover.
Compress the spring and refit the circlip, then
release the spring compressor.
18Lubricate the caliper bore with clean
hydraulic fluid and fit a new piston seal.
19Reassemble the piston components.
Lubricate the contact face of the adjuster nut
with a little brake grease, then fit the adjuster
nut (with new seal), thrust bearing,
thrustwasher, wave washer and the second
thrustwasher. Secure with the circlip.
20Fit a new dust boot. The manufacturers
recommend that it be fitted to the caliper
groove and the piston fitted afterwards; it is
also possible to fit the boot to the piston first
and engage it in the caliper groove afterwards.
Either way it is a fiddly business.
21Refit the piston and screw it into the
caliper, then fit whichever lip of the dust boot
was left free (see illustration).22Renew the slide pin gaiters and apply a
little anti-seize compound to the slide pins
when reassembling the caliper to the bracket.
The splash shield is retained by the rear hub
bolts. Proceed as described in Chapter 11 for
removal and refitting of the rear hub.
1Disconnect the battery negative lead.
2Depressurise the hydraulic system by
pumping the brake pedal at least 20 times, or
until it becomes hard.
3Remove the under-dash trim on the driver’s
side.
4Remove the spring clip which secures the
hydraulic unit pushrod to the brake pedal. Also
remove the clip from the brake pedal shaft
(see illustration).
5Withdraw the brake pedal shaft towards the
left of the vehicle - through the clutch pedal,
when applicable - until the brake pedal is free.
6Remove the pedal, noting the fitted
sequence of bushes, spacers and washers.
7Refit by reversing the removal operations.
Check the correct functioning of the stop-light
and (if applicable) cruise control switches
before refitting the trim. See Chapter 13.1Disconnect the battery negative lead.
2Depressurise the hydraulic system by
pumping the brake pedal at least 20 times, or
until it becomes hard.
3Disconnect the six multi-plugs from the
hydraulic unit. They are all different, so there is
no need to label them. When a plug has a
spring clip retainer, lift the clip before pulling
out the plug. To release the pump plug, pull
back the rubber boot and the plug sleeve (see
illustrations).
4Unbolt the earth strap from the unit (see
illustration).
5Make arrangements to catch spilt hydraulic
15Hydraulic unit - removal and
refitting
14Brake pedal - removal and
refitting
13Rear disc splash shield -
removal and refitting
10•8Braking system
12.21 Dust boot fitted to caliper and piston
15.3d Disconnecting the pressure switch
multi-plug15.3e Disconnecting the pump motor plug15.4 Earth strap (arrowed) bolted to
hydraulic unit
14.4 Pushrod spring clip (A) and brake
pedal shaft clip (B)
15.3a Disconnect the valve block multi-
plug. Lift the clip and pull off the plug15.3b Disconnecting a fluid level sensor
plug15.3c Disconnecting the main valve plug
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3Press the multi-plug locking lever,
disconnect the multi-plug and unhook it from
the module. Remove the module.
4Refit by reversing the removal operations.
Make sure that the multi-plug is properly
engaged before refitting the module.
Front
1Ensure that the handbrake is applied. Raise
and support the front of the vehicle.
2From under the bonnet disconnect the
wheel sensor wiring multi-plug. Unclip the
wiring, working towards the sensor.
3Remove the securing bolt and withdraw the
sensor from the stub axle carrier (see
illustration).
4Unclip the wire from the bracket on the
strut. Remove the sensor and its wiring (see
illustration).
5Clean any rust or debris from the sensor
bore in the stub axle carrier. Pack the bore
with clean wheel bearing grease.
6Renew the O-ring on the sensor and smear
it with grease.
7Refit by reversing the removal operations.
Rear
8Chock the front wheels and release the
handbrake. Slacken the rear wheel nuts, raiseand support the rear of the vehicle and remove
the rear wheel.
9Fold the rear seat cushion forwards, remove
the side kick panel and roll back the carpet to
gain access to the sensor multi-plug (see
illustration).
10Disconnect the multi-plug, release the
floor grommet and pass the cable through the
floor.
11Unclip the handbrake cable from the
suspension lower arm.
12Remove the caliper front slide bolt and
pivot the caliper rearwards to gain access to
the sensor.
13Remove the sensor securing bolt and
withdraw the sensor.
14Clean up the sensor bore, pack it with
grease and renew the sensor O-ring.
15Refit by reversing the removal operations.
1Disconnect the battery negative terminal.
2Disconnect the wiring plug then remove the
master cylinder reservoir cap; do not invert the
cap as hydraulic fluid could enter and damage
the reservoir level switch. Syphon the
hydraulic fluid from the reservoir. Note: Do not
syphon the fluid by mouth, as it is poisonous;
use a syringe or an old poultry baster.
Alternatively, open any convenient bleed
screw in the system and gently pump the
brake pedal to expel the fluid through a plastic
tube connected to the screw.
3Wipe clean the area around the brake pipe
unions on the right-hand side of the master
cylinder and place absorbent rags beneath the
pipe unions to catch any surplus fluid.
4To disconnect the plastic low pressure
hoses, use a small flat bladed screwdriver to
carefully press the flange of the collet into the
master cylinder then pull the hoses out from
the reservoir(see illustration).Unscrew the
two union nuts and disconnect the brake
pipes from master cylinder. Plug or tape over
the pipe/hose ends and master cylinder
orifices to minimise the loss of brake fluid and
to prevent the entry of dirt into the system.
Wash off any spilt fluid immediately with cold
water.5Slacken and remove the two nuts securing
the master cylinder to the vacuum servo unit
then withdraw the unit from the engine
compartment. Remove the O-ring from the
rear of master cylinder and discard it.
6If necessary remove the reservoir from the
master cylinder and withdraw the mounting
bush seals and O-rings. Note that the master
cylinder is a sealed unit with no spare parts
available separately. Therefore if it is faulty it
must be renewed as a unit.
7Fit new mounting bush seals and O-rings to
the master cylinder and refit the reservoir (if
removed). Remove all traces of dirt from the
master cylinder and servo unit mating surfaces
and fit a new O-ring onto the master cylinder
body.
8Fit the master cylinder to the servo unit
ensuring that the pushrod enters the servo unit
bore centrally. Refit the master cylinder
mounting nuts and tighten them to the
specified torque.
9Wipe clean the brake pipe/hose unions and
the master cylinder ports. Refit the pipes to
the master cylinder ports and tighten them
securely. Push the low pressure hoses into
position and check they are securely held by
their retaining collets.
10Refill the master cylinder reservoir with
new fluid and bleed the hydraulic system
1To test the operation of the servo unit
depress the footbrake several times to
exhaust the vacuum then start the engine
whilst keeping the pedal firmly depressed. As
the engine starts there should be a noticeable
“give” in the brake pedal as the vacuum builds
up. Allow the engine to run for at least two
minutes then switch it off. If the brake pedal is
now depressed it should feel normal, but
further applications should result in the pedal
feeling firmer, with the pedal stroke decreasing
with each application.
2If the servo does not operate as described,
inspect the servo unit check valve as
describedin paragraph 3 of Section 29.28Vacuum servo unit (April 1992
on) - testing, removal and
refitting
27Master cylinder (April 1992
on) - removal and refitting
26Wheel sensors - removal and
refitting
10•12Braking system
26.3 Removing a front sensor
27.4 Disconnecting the master cylinder low
pressure hoses (A) and brake pipes (B) -
models from April 1992
26.4 Unclipping the sensor wire from the
strut26.9 Rear wheel sensor multi-plug
(arrowed)
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3If the servo unit still fails to operate
satisfactorily the fault lies within the unit itself.
Repairs to the unit are not possible.
4Remove the master cylinder (Section 27).
5Disconnect the vacuum hose from the servo
unit taking care not to displace the rubber
sealing grommet. Disconnect the wiring plug
from the Pedal Travel Sensor (PTS) which is
situated on the front of the servo.
6Working from inside the vehicle, remove the
servo pushrod retaining clip from the brake
pedal. If necessary, to improve access to the
brake pedal remove the right-hand lower facia
panel .
7Slacken and remove the four nuts securing
the servo unit to the bulkhead, then return to
the engine compartment and remove the
servo unit from the vehicle. Remove the
gasket from the rear of the unit and discard it.
8Note that the vacuum servo unit is a sealed
assembly with no spare parts available
separately. Therefore if it is faulty it must be
renewed as a unit. Inspect the vacuum servo
vacuum hose sealing grommet for damage or
deterioration and renew if necessary.
9Remove all traces of dirt from the servo unit
and bulkhead mating surfaces and fit a new
gasket onto the rear of the servo.
10Manoeuvre the servo unit into position,
ensuring that the servo unit pushrod is
correctly located with the hole in the pedal.
Refit the servo unit retaining nuts and tighten
them to the specified torque setting. Secure
the pushrod in position with the retaining clip
11Carefully refit the vacuum hose to the servo
unit taking great care not to damage or displace
the sealing grommet. Reconnect the wiring
connector to the Pedal Travel Sensor (PTS).
12Refit the master cylinder as described
above. On completion start the engine and
check the operation of the servo unit.
1Disconnect the vacuum hose from the servo
unit taking care not to displace the rubber
sealing grommet.
2To disconnect the hose from the inlet
manifold, use a small flat-bladed screwdriver
to carefully press the flange of the collet into
the manifold then pull the hose out and
remove it from the vehicle (see illustration).
3Examine the vacuum hose and sealing
grommet for damage, splits, cracks or general
deterioration and renew as necessary. Make
sure that the check valve is working correctly
by blowing through the hose from the servo
unit end. Air should flow in this direction, but
not when blown through from the inlet
manifold hose end. Renew the check valve if it
is at all suspect.
4Ensure that the check valve is fitted the
correct way around then push the connector
into the manifold and check that it is securely
held by the retaining collet.5Carefully refit the vacuum hose to the servo
unit taking great care not to damage or
displace the sealing grommet.
6On completion start the engine and check
the operation of the servo unit.
1Disconnect the battery negative terminal.
2Carry out the operations described in
paragraphs 2 to 4 of Section 27.
3Remove all traces of dirt from the exterior of
the block then disconnect the motor and valve
block wiring plugs and free the diagnostic test
wiring plug from the mounting bracket.
4Position some absorbent rag beneath the
valve block then unscrew the three brake pipe
outlet unions whilst avoiding getting surplus
brake fluid in the wiring plugs. Plug the block
ports and pipe ends to minimise the loss of
fluid and prevent the entry of dirt into the
system. Wash off any spilt fluid immediately
with cold water.
5Slacken and remove the three valve block
and pump assembly mounting nuts and
remove the unit from the engine compartment.
6Note that the valve block and pump
assembly is a sealed unit and cannot be
overhauled. If it is faulty it must be renewed.
Note that if the low pressure hoses are
disconnected from the assembly, great care
must be taken when reconnecting them to
ensure that the valve block filter is not
damaged.
7Manoeuvre the assembly into position then
refit the mounting nuts and tighten them by
hand only. Taking into account the amount of
movement in the mounting rubbers, position
the assembly so that it will not contact the
mounting bracket then tighten the mounting
nuts to the specified torque setting.
8Remove the plugs then reconnect the outlet
pipes to the assembly and tighten the union
nuts securely.
9Ensure that the wiring is correctly routed
and reconnect the wiring plugs to the valve
block and pump assembly. Refit thediagnostic test wiring connector to the
mounting bracket.
10Wipe clean the brake pipe/hose unions
and the master cylinder ports. Refit the pipes
to the master cylinder ports and securely
tighten the union nuts. Push the low pressure
hoses into position and check they are
securely held by their retaining collets.
11Reconnect the battery negative terminal,
then fill the master cylinder and bleed the
complete hydraulic system using the
information given earlier in this Section.
1The anti-lock braking control module is
located behind the glovebox. To remove the
module first disconnect the battery negative
terminal.
2Open up the glovebox then, using a small
flat-bladed screwdriver, carefully prise up the
retaining clip and disconnect the glovebox
hinge arms. Withdraw the glovebox assembly
from the facia noting the plastic bushes which
are fitted to the glovebox pivot points.
3Lift the wiring plug retaining clip and
disconnect the plug to the control module. The
ABS module is the upper of the two control
modules mounted horizontally.
4Release the retaining clips and slide the
module out of the mounting bracket (see
illustration).
5Commence refitting by sliding the module
into the mounting bracket until it clips into
position.
6Connect the wiring connector to the
module, ensuring that the wiring is correctly
routed, and secure it in position with the
retaining clip.
7Ensure that the plastic bushes are correctly
fitted to the glovebox then refit the glovebox
assembly, locating the pivots in the correct
locations on the facia panel. Clip the hinge
arms onto the glovebox and check that it
opens and closes smoothly.
8Reconnect the battery negative terminal.
31Control module (April 1992
on) - removal and refitting
30Valve block and pump
assembly (April 1992 on) -
removal and refitting
29 Vacuum servo unit check
valve (April 1992 on) -
removal, testing and refitting
Braking system 10•13
10
29.2 Disconnecting brake servo vacuum
hose from the inlet manifold (DOHC engine
shown)31.4 Removing the ABS control module -
models from April 1992
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1Disconnect the battery negative terminal
then deplete the vacuum in the braking system
servo unit by depressing the footbrake several
times.
2Disconnect the wiring plug from the sensor
which is situated on the front of the vacuum
servo unit.
3Using a small flat-bladed screwdriver, prise
off the retaining circlip, then carefully withdraw
the sensor from the servo unit taking great
care not to displace the sealing O-ring (see
illustration).Note:If the O-ring becomes
displaced and falls into the servo unit it must
be recovered before the sensor is refitted.
4If the sensor is to be renewed, ensure that
the tip of the new sensor pushrod is the same
colour as that of the original.
5Fit a new O-ring to the sensor and apply asmear of clean engine oil to it to ease
installation.
6Ease the sensor into position in the servo
unit, taking care not to displace the O-ring,
and secure it in position with the circlip.
7Reconnect the sensor wiring connector and
the battery negative terminal.1Remove the driver’s seat as described in
Chapter 12.
2Carefully peel back the carpet from
immediately behind the crossmember to
reveal the G switch.
3Disconnect the wiring connector then undo
the two retaining screws and remove the
switch from the vehicle.
4Refitting is a reversal of the removal
procedure.
33G (gravity) switch (April 1992
on) - removal and refitting32Pedal Travel Sensor (PTS)
(April 1992 on) - removal and
refitting
10•14Braking system
32.3 Removing the Pedal Travel Sensor
(PTS) circlip - models from April 1992
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times, then use a proprietary balljoint
separator to break the taper (see illustration).
5Use a stout piece of wood to lever the lower
arm downwards and free the balljoint from the
stub axle carrier.
6Remove the ABS wheel sensor from its
hole.
7Remove the spring clip from one of the
wheel studs and pull the brake disc off the
hub.
8Remove the stub axle carrier pinch-bolt.
Spread the stub axle carrier by carefully
introducing a chisel or blunt instrument into its
slot. Draw the stub axle carrier off the
suspension strut and remove it.
9Refit by reversing the removal operations,
noting the following points:
a)Tighten all fastenings to the specified
torque
b)Use new split pins, when applicable
c)Renew the wheel sensor O-ring if
necessary; clean the sensor and its bore,
and smear them with wheel bearing
grease
Models before August 1989
1Remove the stub axle carrier as described
in the previous Section.
2Screw the wheel nuts onto the studs to
protect the threads. Clamp the stub axle
carrier in a vice by means of the studs and
nuts; do not overtighten.
3Remove the dust cap from the hub nut,
carefully levering it free (see illustration). A
new cap and a new hub nut will be required for
reassembly.
4Undo the hub nut. This nut is very tight. The
right-hand hub nut has a left-handthread,
therefore it is undone in a clockwisedirection.
5Remove the ABS rotor from below the hub
nut.
6Lift the carrier off the stub axle, tapping it
with a mallet if necessary to free it. Remove
the bearing inner race from the carrier.
7Prise the oil seal out of the carrier and
recover the bearing outer race.8Drive the bearing tracks out of the stub axle
carrier using a blunt drift and a hammer. Be
careful not to mark the bearing seats.
9Clean all old grease and debris from the
stub axle carrier.
10New bearing components are matched in
production and must only be fitted as a set.
Only the manufacturer’s approved
components should be used in order to obtain
the required long service life and freedom from
adjustment.
11Drive the new bearing tracks into the
carrier, preferably using a suitable diameter
tube to seat them. Make sure the tracks are
fully seated.
12Work some clean grease into the bearing
races. Use high melting-point lithium-based
grease (to Ford spec. SAMIC-9111A or
equivalent). Make sure all the spaces between
the rollers are filled; do not pack grease into
the space between the inner and outer
bearings however.
13Fit the bearing outer race. Grease the lips
of a new oil seal and fit it to the stub axle
carrier, lips facing inwards. Seat the seal with
a pipe or large socket and a mallet.
14Offer the carrier to the stub axle, tapping it
home if necessary. Fit the bearing inner race
over the stub axle.
15Refit the ABS rotor, dished face
uppermost.
16Fit a new hub nut (left-hand thread on the
right-hand hub) and tighten it to the specified
torque.17Fit a new dust cap and seat it by tapping
round the rim (see illustration).
18Refit the stub axle carrier.
Models from August 1989
19Modified front wheel bearing assemblies
were fitted to all models after 1989. The
modified bearings are of similar design, but
are interference fit type bearings. This was to
reduce the amount of endfloat present at the
wheel hub and to improve bearing preload
tolerances. This was achieved by increasing
the diameter of the stub axle, thus causing the
axle to be an interference fit in the bearing.
Note that the modified bearings can be fitted
to earlier models which were originally
equipped with non-interference fit front wheel
bearings. Note: Due to the design of the
interference fit bearings, a suitable heavy duty
bearing puller and a hydraulic press and
several suitable mandrels will be required to
remove the originalbearing and install the new
one.
20Interference fit front wheel bearings can be
removed and refitted as described above,
noting the following points.
a)It will be necessary to press or draw the
stub axle out of the carrier using a
hydraulic press or a suitable bearing
puller.
b)Draw the outer bearing off the stub axle
using a suitable bearing puller.
c)Press new bearing tracks into the hub
carrier using a suitable tubular spacer
which bears only on the tracks outer edge.
d)Pack the new outer bearing with Ford
grease (SAM-1C9111-A) and press the
bearing into the carrier.
e)Press a new seal into position in the
carrier and pack all cavities with the
specified grease.
f)Position the hub carrier over the stub axle
and press the carrier onto the axle using a
suitable tubular spacer which bears only
on the bearing track outer edge.
g)Pack the new inner bearing with the
specified grease then press the bearing
onto the stub axle, using a suitable tubular
spacer, whilst rotating the hub carrier to
ensure that the bearing is correctly seated.
h)Whilst tightening the hub nut to the
specified torque, rotate the hub carrier to
ensure that the bearing preload is correct
and bearings are correctly seated. Once
the nut is tightened to the specified
torque, rotate the hub carrier 20 times to
settle the bearings in position then
recheck that the hub nut is tightened to
the specified torque. Pack the inner
bearing with the specified grease and fit a
new dust cap.
17Front wheel bearings -
renewal
11•8Steering and suspension
16.4 Slackening the front suspension lower
arm balljoint nut
17.17 Seating the new dust cap17.3 Removing the dust cap from the stub
axle carrier to expose the hub nut
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1Raise the vehicle on ramps or on a hoist, so
that the weight is still on the wheels.
2Remove the lower arm pivot nut and bolt
(see illustration).
3Remove the anti-roll bar end nut, dished
washer and plastic cover. Note which way
round these components are fitted.
4Now raise and support the vehicle so that
the front wheels are off the ground.
5Remove the split pin from the lower arm
balljoint nut. Back off the nut a few turns,
break the taper with a balljoint separator, then
remove the nut and free the balljoint from the
stub axle carrier.
6Pull the lower arm off the anti-roll bar and
remove it.
7If the balljoint is defective, the whole arm
must be renewed. The dust boot can be
renewed separately if required.
8The anti-roll bar bushes (compliance
bushes) can be removed by cutting off their
flanges with a chisel, then pressing or tapping
out the remains. Fit new bushes by tapping
them home with a tube or socket.
9The pivot bush can be pressed out using a
bench vice and a couple of large sockets or
suitable pieces of tube. The new pivot bush
should be lubricated with soap or glycerine
(notoil or grease) before being fitted in a
similar fashion. Do not keep the new bush
compressed in the tube for longer than
necessary, in case it becomes permanently
distorted.
10Commence refitting by offering the arm to
the anti-roll bar. Make sure that the shallow
dished washer and the plastic cover are fitted
on the inboard side of the bar (furthest from
the nut).
11Refit the balljoint to the stub axle carrier.
Tighten the castellated nut to the specified
torque and secure it with a new split pin.
12Fit the pivot end of the arm into the
crossmember and secure it with the pivot nut
and bolt. Jacking the vehicle up or down to
vary the loading on the wheels may help to get
the holes lined up. Do not tighten the pivot nut
and bolt yet.
13Lower the vehicle back onto its wheels.14Fit the deep dished washer and the plastic
cover over the end of the anti-roll bar. Fit the
nut and tighten it to the specified torque.
15Tighten the lower arm pivot nut and bolt to
the specified torque.
1Raise the vehicle on ramps or a hoist, so
that the weight is still on the wheels.
2Unbolt the two anti-roll bar clamps (see
illustration).
3Now raise and support the vehicle with the
wheels free.
4Remove the two nuts which hold the ends
of the anti-roll bar to the lower arms. Recover
the plastic covers and deep dished washers.
5Remove one lower arm pivot nut and bolt.
Prise the lower arm out of the crossmember
and work the anti-roll bar free from it.
6Pull the anti-roll bar out of the other lower
arm and remove it. Recover the other
compliance bush covers and washers.
7Refit by reversing the removal operations,
but do not finally tighten any fastenings until
the weight of the vehicle is back on the
wheels. Tighten in the following order:
a)Anti-roll bar clamps
b)Anti-roll bar-to lower arm nuts
c)Lower arm pivot nut and bolt
8Make sure that the anti-roll bar clamp
bushes are not twisted on completion.
Compliance bushes
1These are described in Section 18. It is not
strictly necessary to remove the lower arms to
renew these bushes, though obviously access
is not good with the arms installed.
Clamp bushes
2Although it is possible to remove and refit
the clamp bushes without removing the anti-
roll bar, since the bushes are split, this is not
recommended by the makers.
3Remove the anti-roll bar as described in the
previous Section.4Slide the clamp bushes off the anti-roll bar,
if necessary prising them open a little first.
5Lubricate the new bushes with glycerine or
soap and slide them into position with the split
facing forwards.
6Refit the anti-roll bar.
1Slacken the front wheel nuts, raise and
support the vehicle and remove the front
wheel.
2Disconnect the battery negative lead.
3Unbolt the brake caliper and suspend it
nearby so that the flexible hose is not strained.
4Remove the ABS sensor from the stub axle
carrier.
5Separate the track rod end and suspension
lower arm balljoints from the stub axle carrier.
6Unclip the ABS/brake pad wear wiring from
the strut.
7Remove the dust cover from the top of the
strut.
8Have an assistant support the strut.
Remove the three nuts which secure the strut
to the turret (see illustration).Do notundo
the centre nut.
9Lower the strut out of the turret and remove
it.
10Refit by reversing the removal operations.
Do not fully tighten the strut-to-turret nuts until
the weight of the vehicle is back on its wheels.
21Front suspension strut -
removal and refitting
20Front anti-roll bar bushes -
renewal
19Front anti-roll bar - removal
and refitting
18Front suspension lower arm -
removal, overhaul and refitting
Steering and suspension 11•9
11
19.2 A front anti-roll bar clamp
21.8 Two of the three nuts (arrowed)
securing the suspension strut to the turret
18.2 Front suspension lower arm components
A Anti-roll bar
B Rear dished washer and cover
C Bushes
D Balljoint
E Front dished washer and cover
F Locknut
G Pivot bush
procarmanuals.com

1With the strut removed, clamp it in a vice
with protected jaws.2Remove the stub axle carrier pinch-bolts.
Spread the carrier by carefully introducing a
chisel or blunt screwdriver into the crack, then
slide it off the strut (see illustration).
3Fit spring compressors to the strut.
Compress the spring until it is no longer
tensioning the strut. Make sure that the
compressors are secure (see illustration).
4Hold the piston rod with a hexagon key and
remove the piston rod nut. Also remove the
dished retainer.
5Remove the top mount, the bearing and the
spring upper seat(see illustration).
6Carefully lift off the compressed spring.
Place it where it will not be knocked or jarred.
7Remove the shock absorber gaiter and
bump stop.
8Examine all components for wear and
damage and renew as necessary. The shock
absorber must be renewed if it is leaking, or if
it shows uneven resistance when “worked”
with its lower end clamped in a vice. In theory
springs and shock absorbers should be
renewed in pairs in order to maintain balanced
handling characteristics.
9Commence reassembly by sliding the bump
stop onto the shock absorber piston rod. Refit
the gaiter.
10Make sure that the spring seats are clean,
then fit the compressed spring to the lower
seat.
11Refit the spring upper seat, the bearing
(small hole upwards) and the top mount.
12Refit the dished retainer and the piston rod
nut. Hold the piston rod and tighten the nut.13Carefully release the spring compressors.
Make sure that the ends of the spring are
correctly located in the spring seats.
14Spread the stub axle carrier again. Slide it
onto the strut, remove the spreader and refit
the pinch-bolt. Tighten the pinch-bolt to the
specified torque.
15Refit the strut to the vehicle.
Models before 1987
1Raise the rear of the vehicle and support it
securely under the frame rails.
2Remove the exhaust system.
3Remove the propeller shaft.
4Release the handbrake cable from the
equaliser yoke by removing the circlip from the
handbrake lever pin. Release the cable from
its floor brackets.
5Disconnect the brake flexible hoses from
the rear brake pipes.
6Disconnect the ABS and brake pad wear
sensor wires (as applicable). Free the wires
from the suspension lower arms.
7Unbolt the two anti-roll bar brackets from
the floors.
8Disconnect the ride height control sensor
and the shock absorber air lines, when so
equipped.
9Lower the vehicle onto its wheels in order to
load the rear springs a little. Place a jack under
the final drive unit and support it.
10Unbolt and remove the two guide plates
(see illustrations). The centre bolt on each
plate is retained by a lockwasher which must
be released first.
11Unbolt the final drive unit rear mounting
from the floor.
12Remove the luggage area side trim, then
remove the rear shock absorber upper
mounting bolts.
13Raise and support the rear of the vehicle
again. Withdraw the rear suspension and final
drive assembly.
14Refit by reversing the removal operations.
Tighten all fastenings to the specified torque,
when known. When applicable use new O-
rings on the ride height control line unions.
23Rear suspension and final
drive assembly - removal and
refitting
22Front suspension strut -
dismantling and reassembly
11•10Steering and suspension
22.2 Spreading the stub axle carrier clamp22.3 Spring compressors fitted to a front suspension strut
22.5 Front suspension strut components
A Top mount
B Bearing
C Spring upper seat
D Spring
E GaiterF Bump stop
G Shock absorber
and spring lower
seat
H Stub axle
Warning: Spring compressors of
adequate rating must be used for
this job. The use of makeshift or
inadequate equipment may result
in damage and personal injury.
23.10a One of the rear suspension guide
plates
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15Bleed the brake hydraulic system and
adjust the handbrake on completion.
Models from 1987
16From 1987, the tab washer which secures
the guide plate centre bolt on each side has
been deleted. A self-locking bolt and plain
washer are used instead.
17The new bolt and washer should be fitted
to earlier models if the old bolt has been
removed for any reason. The tab washer
should be discarded.
18The tightening torque for the new bolt
remains the same as that given for the original.
1Remove the wheel trim. Apply the
handbrake and chock the front wheels.
2Slacken the driveshaft stub axle. This nut is
very tight. The left-hand nut has aleft-hand
thread, therefore it is undone clockwise.
3Remove the brake disc.
4Remove the driveshaft stub axle.
5Remove the four bolts which secure the
hub. Pull the hub off the driveshaft stub,
leaving the disc splash shield loose.
6Refit by reversing the removal operations.
Carry out the final tightening of the driveshaft
stub nut with the wheels on the ground.
1Remove the rear hub as described in the
previous Section (see illustration).
2Prise out both oil seals from the hub.
Recover the bearing races.
3Drive the bearing tracks out of the hub with
a hammer and a blunt drift.4Clean grease and debris from the hub and
clean up any burrs or nicks.
5Fit the new bearing tracks, pressing them in
squarely with the help of a piece of pipe or
tube.
6Thoroughly grease the bearing races and
pack the lips of the oil seals with grease.
7Fit the races and the oil seals, lips inwards.
Seat the oil seals with a mallet and the pipe or
tube.
8Refit the rear hub.
1This procedure is only specified by the
manufacturers as applying to the rear wheels,
but there is no reason to believe that it will not
work on the front.
2Remove the rear wheel, brake caliper and
brake disc.
3Drive the wheel stud out of the hub flange. 4Insert the new stud from the inboard side of
the flange. Engage the splines by hand
pressure, then draw the stud into place with a
wheel nut and progressively thicker spacers
(see illustration).
5Refit the brake disc, caliper and wheel.
1Raise and support the rear of the vehicle.
2Unbolt the driveshaft outboard flange from
the stub. It is secured by six Torx screws.
3Disconnect the anti-roll bar from the link rod
by prising it free. On models with ride height
control, also disconnect the height sensor
from the anti-roll bar link rod.
4Free the brake pipe and flexible hose from
the brackets next to the spring. If it is the left-
hand spring which is being removed, also
unbolt the brake pipe T-piece from the floor.
5Raise a jack under the rear suspension
lower arm to load the spring.
6Unbolt the shock absorber from the lower
arm.
27Rear spring - removal and
refitting
26Wheel stud - renewal
25Rear wheel bearings -
renewal
24Rear hub - removal and
refitting
Steering and suspension 11•11
11
25.1 Rear hub components
A Outer oil seal
B Outer bearing
C HubD Inner bearing
E Inner oil seal26.4 Fitting a new wheel stud using a nut
and spacer
23.10b Rear suspension components
1 Lower arm outer bush
2 Lower arm
3 Lower arm inner bush
4 Final drive rear mounting
5 Buffer
6 Spring seat
7 Crossmember
8 Insulator
9 Guide plate
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