steering JAGUAR X308 1998 2.G User Guide

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

10
.
Install road wheel. Re fer to Section 100-02
11. Raise vehicle, remove stands and fully lower vehicle.

12
.
Fully slacken nut on special tool 204-114.

13
.
Release dowel of special tool from suspension turret slot.
14. Raise vehicle for access an d remove special tool from
suspension.
15. Fully lower vehicle.
16. Carry out steering geometry an d wheel alignment checks and
if necessary adjust. Refer to 57.65.01.

10. NOTE
: It is not necessary to re
move Special Tool from spring
at this stage.
Remove spring assembly and Special Tool 204-111 from
suspension turret.
11. Lower vehicle to working heig ht and support on stands.

12 . Remove an
d discard tiestraps
securing wheel speed sensor
harness to upper wishbone.

13 . R
emove wheel speed sensor se
curing screw and withdraw
sensor from vertical link.

14 . R
emove nut securing tie rod oute
r ball joint to steering arm.
15. Release tie rod ball joint from vertical link.

25
.
Release lower steering column from pinion shaft.
1. Remove lower steering column nut and bolt.
Move column up
wards to release it from pinion shaft.

26
.
Disconnect harness connector from steering transducer.

27
.
Remove tiestrap securing retu rn pipe, harness (RHD only)
and rubber support to steering rack.
28. CAUTION: Do not allow steerin g pipes to support weight
of steering rack.
Position steering rack for access.
Pi
vot steering arm fully downwards

In
stallation

Re
move steering rack securing bolts.
Carefully move steer

ing rack
downwards for access to
wishbone eccentric bolt.

29 . R
emove lower wishbone rear
arm eccentric bolt and nut.
Mark position of eccentri
c bo
lt large graduation mark on
crossbeam.
R e
move wishbone rear ec
centric bolt and nut.
30. Remove lower wishbone rear arm/ball joint assembly from
crossbeam.

1. Positi
on wishbone rear arm on crossbeam and install but do
not tighten eccentric bolt.

2. Install steeri
ng rack on crossbeam.
Ensure
that b
ushes are correct
ly positioned on steering
rack.
Posi ti
on steering rack on crossbeam.
Position support brac
kets over bus
hes.
Install mountin
g bracket bolts an
d tighten to 41-54Nm.
3. Install lower steering column on pinion shaft.
Move col u
mn downwards to engage coupling splines on
pinion shaft.

1
. Install nut and bolt and tighten to 22-28Nm.

4. Position an
d connect harnes
s to steering transducer.
RHD
vehicles. Position steeri
ng harness behind return
pipe.
Conne
ct harness to transducer.

5. Secure return pipe on steering
rack.
1. Position pipe rubber support on steering rack.
2. Position pipe on support .
3. RHD vehicles. Position harness on pipe support rubber.
4. Secure pipe and harness to support with new tiestrap.

6. Inst
all shock absorber
and mounting bracket.
Posit
ion shock absorber moun
ting bracket on wishbone
rear arm.
Install
wishbone front arm to
rear arm bolt and tighten to
77-103Nm.
7. Tighten shock absorber lower bolt and nut to 43-57Nm.

12
.
Install nut securing upper ball jo int to vertical link and tighten
to 60-80Nm.

13
.
Position tie rod ball joint taper pin on steering arm and install
and tighten nut to 71-85Nm.
14. Raise vehicle and support on st ands to provide access for
Special Tool 204-111 and road spring.

15
.
Install spring pan, rubber lowe r seat, spring and rubber upper
seat on Special Tool 204-111.
16. Install road spring in suspension turret.
Install
spring pan/spring as
sembly and Special Tool 204-
111 in suspension turret.

10. NOTE
: It is not necessary to re
move Special Tool from spring
at this stage.
Remove spring assembly and Special Tool 204-111 from
suspension turret.
11. Lower vehicle to working heig ht and support on stands.

12 . Re
move tiestraps securing wheel speed sensor harness to
upper wishbone.

13 . R
emove wheel speed sensor se
curing screw and withdraw
sensor from vertical link.
14. Remove nut securing tie rod oute r ball joint to steering arm.