1998 JAGUAR X308 lower

Jacking and Lifting - Using the Vehicle Jack
Gene
ral Procedures


1.
WARN
INGS:
ENSURE THAT THE VEHICLE IS STANDING ON FIRM, LEVEL
GROUND.
DO NOT START OR RUN THE ENGINE WHILE THE VEHICLE
IS ONLY SUPPORTED BY THE VEHICLE JACK.
Position the jack at the appropri ate front or rear jacking point.
Put the parkin
g brake ON and
the transmission in Park.
Chock the wh
eels to prevent movement of the vehicle.

2.
Locat e
the arm of the jack securely in the jacking socket.
R
e
move the rubber cover from the socket.
3. Raise/lower the vehicle using the jack ratchet handle.
4. Remove the jack from the jacking point.
Fi
t the rubber cover to the jacking socket.

Suspension System - General Information - Front Camber and Caster
Adjust
ment
Gen
eral Procedures
• NOTE: Before any work is commenced, th e vehicle must be checked to establish that it conforms to the Jaguar original
specification, e.g. wheels, ti res, tire pressures, etc.
• NOTE: The vehicle must be unladen and the fuel tank full when measuring suspension geometry.

1.
Road test the vehicle to establish the exact nature of the
complaint, e.g. pulling to one side, wander.
2. Measure the suspension geometry, fill in the 'Suspension
Geometry Record Form', and co ntact Jaguar Technical Support
for assistance.
3. Technical Support will give advice on the course of action to be
taken to rectify the problem.
4. Each lower wishbone pivots on and is secured to the front
crossbeam by two fulcrum bolts. A circular eccentric flange
formed under the hexagonal head of each fulcrum bolt, has
raised graduation marks to indicate radial position. A washer
with a 'D' shaped hole locates on a flat on the threaded section
of each bolt. This ensures that the washer rotates with the bolt,
maintaining an eccentric position corresponding with the
flanged head. The outer face of the washer is punch marked,
ensuring correct instal lation with the chamfered face inwards.
This permits the washer to rotate freely in the crossbeam cam
reaction plate during a djustm ent. Each fulcrum bolt and
washer are secured by a self locking nut.
On rotation of the bolt, lateral movement of the eccentric flange
and washer is restricted by the cam plate faces, forcing the bolt
shank to move laterally in the crossbeam slots. Lateral
movement of the bolt shank re sults in corresponding inward
and outward movement of th e wishbone arm, effecting
adjustment of wh eel alignment.
Rotation of the front fulcrum bolt principally adjusts wheel
caster angle, with a small amount of camber angle change.
Adjustment of the rear fulcrum bo lt mainly alters wheel camber
angle with a small amount of caster angle change.
On vehicles with VIN up to 833124, fulcrum bolt eccentric
flanges have raised graduation marks representing 15 degree
increments of bolt rotati on from 0 to 90 degrees.
On vehicles with VIN from 833125, the fulcrum bolt graduation
marks represent bolt shank ho rizontal movement in 1mm
increments from 0 to 3mm.
The upper wishbone and fulcrum shaft are not adjustable and
play no part in steering geometry adjustment.

Suspension System - General Information - Wheel Bearing Inspection
Gene
ral Procedures


1.
Dur
ing use, a small amount of surplus grease may appear
around the bearing seal, this does not indicate a failed bearing
or seal. The grease should not be removed as this will act as an
additional barrier to the ingress of water or foreign matter.
Excessive end float or bearing ru mble will indicate a failed
bearing; for maximum permissibl e end float see specification
section. Take care not to confuse suspension ball joint or upper
or lower fulcrum bu sh movement for bearing end float.
If the hub is removed for any reason, a new bearing assembly
must be installed. Never at tempt to re-use a bearing.

Front Suspension -
Lubri
cants, Fluids, Sealants and Adhesives
Press-In Loads
Torques


UnitS
pecification
Loctite27

0
Greas

e
Shell Retin
ax 'A'
Greas

e
Castro
l 'NTR'
Com

ponent
Kn
Ball join

t to upper wishbone
25
- 50
B

all joint to lower wishbone
25
- 50
Com

ponent
Nm
N

ut - ball joint, upper wishbone to vertical link.
60
-80
N

ut - ball joint, lower wishbone to vertical link.
60
-80
Nu

t - fulcrum bolt, upper wishbone.
60
-80
N

ut - ball joint, tie rod to steering arm.
71
-85
Bol

t - wheel speed sensor to vertical link.
8-1
0
Bol

t - front mounting to crossbeam.
22
-28
Bolt

- mounting , stabilizer bar.
30
-40
N

ut - link arm ball joint to stabilizer bar.
60
-80
Bolt

- mounting, steering rack to crossbeam.
41
-54
B

olt - front mounting, crossbeam to body.
22
-28
Bol

t - spring pan to lower wishbone.
70
-90
N

ut - shock absorber to upper mounting
(vehicles with adaptive damping).
16
-18
Nu

t - shock absorber to upper mounting (vehicles without adaptive damping).
30
-40
N

ut - shock absorber lower to wishbone.
43
-57
B

olt - engine Hydramount to crossbeam.
34
-46
B

olt - crossbeam rear mounting to body.
13
1-185
Bol

t - generator cooling du
ct deflector to crossbeam.
17
-23
N

ut - lower steering column to pinion shaft.
22
-28
N

ut - hub, speed sensor rotor.
27
0-330
B

olt - shield, brake disc.
9-1
2
Bol

t - lower wishbone, front arm to rear arm.
77
-103
Nu

t - stabilizer bar link arm to wishbone bracket.
41
-54
N

ut - wishbone front
eccentric bolt.
11
3-153
Nu

t - wishbone rear
eccentric bolt.
11
3-153
N

ut - fulcrum shaft, upper wishbone.
60
-80
Bolt -

power steering pi
pes to pinion housing.
9-1
2

Front C
rossbeam
A
fully stressed, pressed steel and tube fa
brication with integral lower wishbone tie bars, the crossbeam is secured to the
body on four resilient mountings.
The crossbeam incorporates mounting points for:
The u
pper and lower wish
bone fulcrum bolts.
The
stabilizer bar
The power steering rack. The engine h

ydramounts.
R

oad springs.
Slots and cam reaction pl ates on the crossbeam provide for ad justment of suspension geometry.
It
em
Par
t Number
De
scription
1—Cro

ssbeam
2—Upper

Wishbone
3—Lower Wi

shbone Arm, Front
4—Lower Wi

shbone Arm, Rear
5—Upper

Wishbone Ball Joint
6—Lower Wi

shbone Ball Joint
7—Ful

crum Bolt

8—Adjuster B
olt, Front
9—Adjuster B

olt, Rear
10—S

pring Pan
11—Shock Absorber Lower M

ounting Plate
12—Vertical Link


13—Hub Assembly
14—Sensor R

otor
15—B

olt, Wishbone to Link Arm

Upper
Wishbones
Each
upper wi
shbone assembly is a on
e-piece steel forging incorporating:
A pres
s-fit ball joint.
Press-fi

t bushes for location of the upper fulcrum bolt.
Lower Wishbones
Each l
o
wer wishbone comprising
forged steel front and rear arms bolted together, incorporates:
A p
ress-fit ball joint in the outer extremity of the rear arm.
Press-f
i
t bushes for location of the lower fulcrum bolts
Locati
on for the shock absor
b
er lower mounting plates.
Vertica l Links

The vertical
links are of forged steel
wi
th integral steering arms. Each is suppo rted between the upper and lower wishbones
by two ball joints and carries:
Front hub

Brake ca
liper and disc shield assembly

ABS se
nsor
.
Front Hub
s

Each f
o
rged steel front hub accommodates sealed for life cartridge
type wheel bearings, and carries:
The brake rotor assembl
y.
A
h
ub nut with toothed, integral ABS rotor.
Su
s
pension spring pi
n locking device.
Front Road
Springs
The road spri
ng
s are of coil type with their
rating dependent upon vehicle specification
Ea
ch spring is installed between the suspension crossbeam location and the lower wishbone spring pan.
Ru
bber seats ar
e installed betw
een the spring and the crossb eam and the spring pan.
Front Shock A
bsorbers
Th
e
shock absorbers are telescopic hydrau
lically operated units. Optional adaptive damping units incorporate a solenoid-
operated control valve at their upper extremity.
Each shoc
k absorber is installed between the lowe
r wishbone rear arm and a recess in the body.
The l
o
wer end of the shock absorber is se
cured to plates on the wishbone by a bolt that also serves as a pivot.
The u
pper en
d of each shock absorber is secured to the body location by a single nut.
Front Sta
b
ilizer Bar
A
front stabil
izer bar installed on all vehicles
is rated according to suspension specification.
Opera
tion
As each road wheel r
i
ses, move
ment is transmitted through the vertical link assembly to the lower wishbone. The resulting
rise of the wishbone compresses the road spring and partially telescopes the shock absorber. During this action, the spring
absorbs associated shocks and the shock absorber minimizes sprin
g os c
illation.

Du

ring cornering, vehicle weight
is transferred to the outer road wheel with a resulting tendency for the inner wheel to lift.
The stabilizer bar assists in minimizing this tendency by transf erring a proportion of potential lift of the inner wheel to the
outer wheel. This result s in enhanced body stability with improved corner ing capabilities.

3. Lower front of vehicl
e.

4. W
A
RNING: ENSURE THAT THE DOWEL OF TOOL 204-114
IS CORRECTLY POSITIONED ACROSS THE SUSPENSION TURRET
SLOT.
Locate special tool in suspension turret slot.
Pas s
special tool 204-114 thro
ugh slot in suspension turret
and rotate stem to locate dowel.

5. WARNING: WHE N
TIGHTENING
TOOL NUT, USE LOWER
DOWEL AS A GUIDE TO ENSURE THAT THE TOOL STEM DOES
NOT ROTATE AND DISTURB POSITION OF DOWEL IN
SUSPENSION TURRET.
Tighten nut of special tool 204-114 to full extent, to achieve
suspension mid-laden position.
6. Ra
ise front of vehicle and support
on stands. refer to Section
100-02.
7. Remove appropriate road wheel. Refer to Section 100-02.

8. Remove an d discard tiestraps se
curing wheel speed sensor
harness to upper wishbone.
9. Move steering to appropriate full lock for access to suspension.

10 . R
emove nut securing upper wish
bone ball joint to vertical
link.
11. CAUTION: Do not use special tool 211-098 in the

f
ollowing procedure as this will
damage the ball joint gaiter.
Release wishbone ball joint from vertical link.
1. Install special tool 204-192 on upper wishbone ball joint.
2. Tighten bolt of special tool to release ball joint
taper from vertical link.
12. Remove special tool from ball joint.

13
.
Lift upper wishbone to withdraw ball joint from vertical link.

14
.
To prevent damage to lower ball joint, secure vertical link to
road spring using strong wire.

15
.
Remove upper wishbone fulcrum nut and bolt and withdraw
wishbone from vehicle.
16. Secure upper wishbone in a vise.
17. Using a hacksaw, partially cut through two diametrically
opposite segments of ball joint flange.