reset JAGUAR X308 1998 2.G Workshop Manual

Anti-Lock Control - Anti-Lock Control
Description and Operation


Wheel Spe
ed Sensors
Each
wheel is monitored by a wheel speed se n
sor, to detect the speed of movement of
a toothed gear that is driven by the
wheel. Signal's generate d by the toothed gear passing th e sensor are sent to the ABS/TCCM to communicate the speed of
wheel rotation and any rapid change of wheel speed.
The frequency of the sinusoidal output voltag e signal from the sensor, is proportional to road wheel rotational speed and the
number of teeth on the toothed gear. The amplitude of the volt age is dependent upon the 'air gap' between the sensor and
toothed wheel, therefore it is important that this preset gap remains clear and undisturbed.
Ite
m
De
scr
iption
1Pe
dal Housi
ng / Booster - refer to 206-07
2Vac
u
um Hose - refer to 206-07
3Mas
t
er Cylinder / Reservoir - refer to 206-06
4Pri
m
ary Brake Circuit - refer to 206-06
5Sec

ondary Brake Circuit - refer to 206-06
6Hydraulic

Pump / Motor Unit
7ABS/Traction

Control Control Module (ABS/TCCM)
8Hydraulic Cont

rol Unit (HCU)
6/
7/
8
Br
ak
e Control Modulator
9Brake
Di
sc - refer to 206-03 or 206-04
10Brake
Cali
per - refer to 206-03/206-04
11Wh
ee
l Speed Sensor
12ABS Warning Lamp
13Brake
Fl
uid Level Warning-Lamp - refer to 206-06

The te
lescopic slider provides driver crash
protection by retracting automatically in the event of an accident; it is clamped in
position to a preset torque.
The motorized upper steering column has the following serviceable parts:
Igniti
on switch assembly.
Igni
ti
on key interlock solenoid.
Ti
lt
motor assembly.
Reach motor assembly.
Manu al Upper Column Assembly


Ite
m
Par
t
Number
De
scr
iption
1-L
o
wer mounting bracket
2-Crash tube
3-Harnes
s c
onnector bracket
4-Tilt motor

5-Reach m
otor
6-Upper
moun
ting bracket
7-Ignition switc
h
(hidden)
8-Igni
ti
on key interlock solenoid
9-S
t
eering wheel mounting shaft
It
e
m
Par
t
Number
De
scr
iption
1-Upper
cowl
2-Lower cowl
3-Colu
mn tilt adjustment lever

4-Col
u
mn reach adjustment lever
5-Di
mm
er switch
Motorized Upper Co
lumn Components

Is adjustable for both til
t and reach.
Has ca

ble operated reach adjustment, using a rack an
d wedge, with approximately 16 latched positions.
Has si
x latched tilt positions steppe
d at approximately 3° intervals.
Has an u
nlatched top tilt position, allowing the column to be
pulled down to engage the first detent without using the
tilt lever.
Has an instrument li
ghti
ng dimmer switch installed on the left-hand side of the lower cowl.
Manual Upper Column Components

The telescopic slider provides driver crash protection by retracting automatically in the event of an accident; it is clamped in
position to a preset torque.
The manual upper steering column has the following serviceable parts:
Igni
tion switch assembly.
Igni

tion key interlock solenoid.
Bowden

cable and lever assembly.
It
em
Par
t Number
De
scription
1-L

ower mounting bracket
2-Crash tube
3-Harnes

s connector bracket
4-Upper

mounting bracket
5-Ignition switc

h (hidden)
6-Igni

tion key interlock solenoid
7-S

teering wheel mounting shaft


The manu
al upper
steering column:

3.
If
the damper is not to be installed immediately, the transit
ring should be installed temporarily to the seal.

4. Install a new O-ri
ng seal to the damper.

5. Instal
l the crankshaft damper.
Apply petroleum jelly to the damper

bore and O-ring seal.

1. Install the damper onto the crankshaft.
2. Install the split locking ring onto the crankshaft,
inside the centre bo re of the damper.
3. Install, but do not tigh ten, a new damper securing
bolt.

6. CAUTIO
N: Under no circumstan
ces should the crankshaft
setting peg 303-531 be used in the following operations, to lock
the crankshaft.
Tighten the damper securing bolt. 1. Reposition the damper to allow access to the bolt holes for installing the locking tool.
2. Install the locking tool (303-01 and 303-01-02) to the
damper using the bolts provided.
3. Fully tighten the damper securing bolt to 364-386 Nm.
7. Re
move the locking tool from the damper.
8. Install the drive belt to the fr ont accessory drive. Refer to
Section 303-05.
9. Install the twin fan and motor assembly. Refer to Section 303-
03.
10. Install the plastic mesh cove r to the torque converter
housing; if removed for acce ss to lock the crankshaft.
11. Reset the engine compartment cover to the normal position
and connect the gas struts.
12. Remove the paintwork protection sheets and close the engine
compartment.

3.
If
the damper is not to be installed immediately, the transit
ring should be installed temporarily to the seal.

4. Install a new O-ri
ng seal to the damper.

5. Instal
l the crankshaft damper.
Apply petroleum jelly to the damper

bore and O-ring seal.

1. Install the damper onto the crankshaft.
2. Install the split locking ring onto the crankshaft,
inside the centre bo re of the damper.
3. Install, but do not tigh ten, a new damper securing
bolt.

6. CAUTIO
N: Under no circumstan
ces should the crankshaft
setting peg 303-531 be used in the following operations, to lock
the crankshaft.
Tighten the damper securing bolt.
1. Reposition the damper to allow access to the bolt holes for installing the locking tool.
2. Install the locking tool (303-191 and 303-191-03) to the damper using the bolts provided.
3. Fully tighten the damper securing bolt to 364-386 Nm.
7. Re
move the locking tool from the damper.
8. Install the drive belt to the fr ont accessory drive. Refer to
Operation 12.10.40.
9. Install the supercharger driv e belt. Refer to Operation
18.50.08.
10. Install the twin fan and motor assembly. Refer to Section
303-03.
11. Install the plastic mesh cove r to the torque converter
housing; if removed for acce ss to lock the crankshaft.
12. Reset the engine compartment cover to the normal position
and connect the gas struts.
13. Remove the paintwork protection sheets and close the engine
compartment.

3.
If
the damper is not to be installed immediately, the transit
ring should be installed temporarily to the seal.

4. Install a new O-ri
ng seal to the damper.

5. Instal
l the crankshaft damper.
Apply petroleum jelly to the damper

bore and O-ring seal.

1. Install the damper onto the crankshaft.
2. Install the split locking ring onto the crankshaft,
inside the centre bo re of the damper.
3. Install, but do not tigh ten, a new damper securing
bolt.

6. CAUTIO
N: Under no circumstan
ces should the crankshaft
setting peg 303-531 be used in the following operations, to lock
the crankshaft.
Tighten the damper securing bolt. 1. Reposition the damper to allow access to the bolt holes for installing the locking tool.
2. Install the locking tool (303-01 and 303-01-02) to the
damper using the bolts provided.
3. Fully tighten the damper securing bolt to 364-386 Nm.
7. Re
move the locking tool from the damper.
8. Install the drive belt to the fr ont accessory drive. Refer to
Section 303-05.
9. Install the twin fan and motor assembly. Refer to Section 303-
03.
10. Install the plastic mesh cove r to the torque converter
housing; if removed for acce ss to lock the crankshaft.
11. Reset the engine compartment cover to the normal position
and connect the gas struts.
12. Remove the paintwork protection sheets and close the engine
compartment.

6.

CA
UTION:
Under no circumstances should the crankshaft setting peg 303-531 be used in the following
operations, to lock the crankshaft.
Tighten the damper securing bolt. 1. Reposition the damper to allow access to the bolt holes for installing the locking tool.
2. Install the locking tool (303-191 and 303-191-03) to the damper using the bolts provided.
3. Fully tighten the damper securing bolt to 364-386 Nm.
7. Remove the locking tool from the damper.
8. Install the drive belt to the front accessory drive. Refer to Operation <<12.10.40>>.
9. Install the supercharger drive belt. Refer to Operation <<18.50.08>>.
10. Install the twin fan and motor assembly. Refer to Section 303-03.
11. Install the plastic mesh cover to the torque converter housing; if removed for access to lock the
crankshaft.
12. Reset the engine compartment cover to the normal position and connect the gas struts.
13. Remove the paintwork protection sheets and close the engine compartment.

24.
Connect
the radiator top hose.
1. Connect the hose to the radiator.
2. Reposition the clip along the hose and tighten the clip.
25. Reset the bonnet to the normal position and connect the gas
struts.
26. Connect the battery and fit the battery cover.
Refe
r to the Battery Reconnection Procedure 86.15.15.
27. Refill the cooling system. Refer to Operation 26.10.01.
28. Remove the paintwork protection sheets and close the engine
compartment.

21
.
Refit the drive belt to the generator and accessory drive.
Locat
e the belt around the pulleys, except the generator
pulley.
1. Use a spanner e.g. Churchill JD - 230 or Snap On XDHM 1415, on the centre bo lt of the belt tensioner
idler pulley, to turn the adju ster assembly to the left
against spring tension.
2. Whilst holding the tensioner against spring tension, connect the drive belt to the generator pulley.
Release the tensioner sl owly and remove the
spanner.

22
.
Tighten the three screws wh ich secure the water pump
pulley, to 10-14 Nm.

23
.
Connect the top hose to the coolant outlet pipe.
1. Connect the top hose. Reposition the hose clip and tighten.

24
.
Connect the radiator top hose.
1. Connect the hose to the radiator.
2. Reposition the clip along the hose and tighten the clip.
25. Reset the bonnet to the normal position and connect the gas
struts.
26. Connect the battery and fit the battery cover.
Re
fer to the Battery Reconnection Procedure 86.15.15.
27. Refill the cooling system. Refer to Operation 26.10.01.


28

.
Remove the paintwork protection sheets and close the engine
compartment.

25. Reconnect the air flow meter multi-plug.
26. fit a new strap to secures the vacuum pipe to the induction
elbow.

27. Connect the breather pipe to the A-Bank camshaft cover.
1. Fit a new O-ring seal to the breather pipe.
2. Reconnect the breather pipe to the stub pipe.
28. Carefully refit the engine covers, taking care not to damage
the plastic fixings or the rubber inserts.
29. Connect the battery ground cabl e. Refit the battery cover.
Reset the clock and the radio information.
30. Check for leaks and that all pi pes are securely connected.
Remove the protection sheets, close the engine compartment,
luggage compartment and doors.