1998 JAGUAR X308 body

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.

Rear Su
spension -
Lubric
ants, Fluids, Sealants and Adhesives
Torques


UnitSp
ecification
Loctite27
0
Greas eShell Retin a
x 'A'
Greas
eCastro l 'NT
R'
Com
p
onent
Nm
N
u
t - hub to axle shaft
3
04 -
336
Nu
t -
hub carrier pivot pin
88
-
118
Bol
t
- ABS sensor to hub carrier
8-1
0
Nu
t - stabilizer bar link to lower wishbone.
30
-40
Nu
t - stabilizer bar to link assembly.
30
-40
Bolts -
monostrut to body mounting brackets
88
-
118
Bolt
s
- monostrut to wishbone tie assembly
77
-
103
Bolts
- bu
mp stop to body
26
-34
Bol t
- damper lower mounting
80
-
100
N
u
t - damper top
31
-39
Bolts -
damper mounting plate to body
17
-23

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.

Rear Suspension - Axle B
ump Stop
Re
moval and Installation
Remov

al
CAUTI
ON: Replacement of
nuts and bolts: Various thread-locking devices are used on nuts and bolts throughout the
vehicle. These devices restrict the number of times a nut or bolt can be used. See section 100-00 for information.
I
nstallation
1.
R
aise rear of vehicle and support
on stands. Refer to Section
100-02.
2. Remove appropriate road wheel. Refer to Section 100-02.

3. Remove bolts securing bump stop to body.

4. Remove bu
mp stop and where applicable, reinforcement
bracket from vehicle.

1. Position reinforcemen t brac
ket (where a
pplicable) and bump
stop on vehicle.
2. Install bump stop bolts and tighten to 26-34Nm.

6. On
vehicles with adaptive damping:
R
e
move the top cover from
the shock absorbers.
Disc
onnect the shock absorber electrical connectors by
pressing the lugs down and pulling the connectors up.

7. NOTE : R
ight-hand shown, left-hand similar
Remove shock absorber upper mo unting plates to body nuts.

8. Fully slacken bu
t do not remove the parking brake cable
adjuster nut.
9. Release the parking brake cabl e from the connecting clip.

Position a suitable piece o
f wood between the jack and the
rear suspension and axle assembly.
Rai s
e the jack to take the weight of the rear suspension
and axle assembly.

14 . NOTE
: Left-hand shown, right-hand similar
Remove the exhaust mounting to suspension bracket bolts.

15 . NOTE
: Right-hand shown, left-hand similar
Remove and discard the subframe front mounting brackets to
body bolts.

16 . NOTE
: Right-hand shown, left-hand similar
Remove the subframe front mounting brackets.
Remove an d discard the mount
ing bracket to subframe
bolts.
R e
move the front mounting bracket.
17. NOTE: Left-hand shown, right-hand similar
Remove differential strut upper mounting to body bracket
securing bolts.

I
nstallation


18
.
WARNING: With assistance, support the rear suspension
and axle assembly during remo val. Failure to follow this
instruction may result in personal injury.
Remove the rear suspensi on and axle assembly.
E
nsure that the hydr
aulic pipes, brake calipers, harnesses
and the drive shaft will not obstruct the rear suspension
and axle assembly during removal.
Carefull
y lower the rear suspen
sion and axle assembly and
traverse clear of vehicle.

19
.
Retrieve the subframe mounting bush shims.
20. With assistance, position th e rear suspension and axle
assembly on to a bench.
21. Clean the subframe mounting bushes and corresponding body
locations.

1. Apply a th
in coat of grease to the subframe bushes and place
the shims in position.
2. WARNING: With assistance, support the rear suspension