1998 JAGUAR X308 ECU

Front Susp
ension - Wheel
Knuckle and Wheel Hub Assembly Conversion
Re
moval and Installation
Remov

al
S
pecial Tool(s)

R

oad spring compressor
204-111 (JD115)

Taper separator

211-098 (JD 100)

Front
suspension ball joint splitter
204-192 (JD 219)

Bal
l joint splitter
204-293
1. Raise front of vehicle and support on stands. Refer to Section
100-02.
2. Remove appropriate road wheel. Refer to 74.20.05.
3. Remove brake disc. Refer to 70.10.12.
4. Using wire or string, secure brak e caliper to road spring to take
weight off brake hose.
5. Raise vehicle sufficient to provide access for special tool 204-
111.

6. R
emove nut and bolt securing stabilizer bar link arm to lower
wishbone.
7. Remove nut securing link arm ba ll joint to stabilizer bar and
remove link arm from vehicle.

13
.
Remove nut securing tie rod oute r ball joint to steering arm.

14
.
Release ball joint from vertical link.
1. Install special tool 211-098 on tie rod outer ball joint.
2. Tighten tool bolt to rele ase taper pin from vertical
link.
15. Remove special tool from ball joint and position tie rod for
access.

16
.
Remove nut securing upper wish bone ball joint to vertical
link.
17. CAUTION: Do not use special tool 211-098 in the
following procedure as this will damage the ball joint gaiter.
Release upper wishbone ball joint from vertical link/hub
assembly.

1.
Install special tool 204-192 on ball joint.
2. Tighten tool bolt to rele ase ball joint taper pin from
vertical link.

18 . Raise
upper wishbone to release
ball joint pin from vertical
link.

19 . R
emove nut securing lower wishbone
ball joint to vertical link.

20. To
prevent damage to lower ball
joint, secure vertical link to
road spring using strong wire.
21. CAUTION: Do not use special tool 211-098 in the
following procedure as this will damage the ball joint gaiter.
Release lower wishbone ball joint from vertical link/hub
assembly. 1. Install special tool 204-293 on ball joint.

I
nstallation

2
. Tighten tool bolt to rele
ase ball joint taper pin from
vertical link.
22. Remove vertical link/bearing assembly.
23. Remove special tool 204-293.
24. Clean all suspension to vertical link/hub assembly mating
surfaces.
25. Repeat procedure steps 2 to 24 on opposite side of vehicle.

1. Position modi
fied vertical link/
hub assembly on upper ball joint
taper pin.

2. Position verti
cal link/ hub asse
mbly on lower ball joint taper
pin, install securing nut and tighten to 60-80Nm.

3. Install nu
t securing upper ball jo
int to vertical link and tighten
to 60-80Nm.

4. Po
sition tie rod ball joint taper
pin on steering arm and install
and tighten securing nut to 71-85Nm.

5. Instal
l wheel speed sensor.
Positi

on wheel speed sensor on vertical link.
Inst
al
l sensor securing bolt
and tighten to 8-10Nm.
6. Remove wire temporarily securing vertical link to road spring.
7. Install br ake disc.

8. Re
lease tension on road spring.
Ro

tate adjuster of special tool 204-111 to release spring
tension.
R e
move special tool and adaptor from spring.

9. Position new link ass
embly on
lower wishbone and install but
do not tighten bolt.
10. Position new link arm ball joint stud in stabilizer bar and
install but do not tighten nut.

11
.
Tighten new link arm to wishbone nut and bolt to 41-54Nm.

12
.
Secure new link arm to stabilizer bar.
Tigh
ten link arm to stabilizer bar nut to 60-80Nm.
Check that ball

joint freed
om of movement has been
maintained.
13. Install road wheel. Refer to 74.20.05.
14. Repeat procedure steps 1 to 13 on opposite side of vehicle.
15. Raise front of vehicle, remove stands and lower vehicle.
16. Carry out steering geometry an d wheel alignment checks and
if necessary adjust. Refer to 57.65.01.

Rear
Suspension - Rear Suspension
Description an
d Operation

Description
The i
ndependent rear suspension incorporates co-axial sp
ring and shock absorber units, a subframe, wishbone tie,
pendulum assembly, mounting brac ket, differential strut, cast wishbones and hub carriers. The suspension assembly is
positively located by the subframe, mounting bracket and differential strut.
Each wi
shbone pivots on a fulcru
m bolt which locates in the wishbone tie and pendulum assembly.
The wish
bone tie and pendulum assemblies are respectively in
stalled at the front and rear of the final drive housing.
The differential
strut is secured to the wishbone tie assembly.
Two ti

e rods are installed between the front of the
subframe and the top of the final drive housing.
The ou
ter extremity of each wishbone
is secured to its respective hub carrier assembly by a fulcrum bolt.
Each fulcrum bolt head incorporates an ec centric circular flange which locates in a groove in the front face of the wishbone
arm. Rotation of the fulcrum bolt results in horizontal movement of the bolt shank in an elongated hole in the rear of the
wishbone arm. This acti on achieves corresponding movement of the hub carrier, facilita ting adjustment of road wheel toe-
in.
It
em
Par
t Number
De
scription
1—Hub Carrier
2—Wi

shbone
3—Sprin

g
4—Shock Absorber
5—Suspensi

on Turret

6—Suspensi
on Subframe
7—Moun

ting Bracket
8—D

ifferential Strut
9—Stabilizer Ba

r (Supercharged and
Sport Suspension Models only)
10—Bum
p Stop

Each r
oad spring and is located between the wishbone in
tegral spring seat and the body suspension turret.
Each shoc
k absorber unit is installed
co-axially within the road spring.
The lo
wer end of each shock absorber is secured to the
wishbone by a bolt which also functions as a pivot.
Adaptive damping is av
ailable as an option.
A
rear stabi
lizer bar is installed on
Supercharged and Sport Suspension models . Mounted at the rear of the wishbone
tie assembly, the stabilizer bar is connected to the wishbone by short links.
Op era
tion
As each road wheel r
i
ses, move
ment is transmitted through th e hub carrier assembly to the wishbone and axle shaft. The
corresponding rise of the wishbone compre sses the road spring and partially telescopes the shock absorber. During this
action, the spring absorbs result ing shocks and the shock absorber minimizes spring oscillation.
During cornering, vehicle weight is transferred to the outer road wheel with a resulting tendency for the inner wheel to lift.
On Supercharged and Sport Suspension vehicl es, a rear stabilizer bar assists in minimizing this tendency by transferring a
proportion of potential lift of the inner wheel to the outer wheel. This results in enhanced body stability with improved
cornering capabilities.