body JAGUAR X308 1998 2.G User Guide

Tacho
meter
TACHA
ci
rcuit that provides input for
an electronic tachometer display
Thermal Vacuu
m Valve
TVVControls vacuum l
e
vels or
routing based on temperature
Throttle
Body
TBDe
vi
ce containing the throttle
Throttl
e
Position
TP
Throttl
e
Position Sensor
TPSInterprets throttl
e

position and movement to iden tify idle, acceleration and
full-power demands
Top Dead CenterTDC
Torque Converter C
lutch
TCC
To
tal
indicator reading
TIRThe t
o
tal indicated movement on a DTI with the test piece rotated through
360°
Transm
ission Control
Module
TCMControls
the shifting pattern
of the (automatic) transmission
Transm
ission Control
Switch
TCSModifi es
the operation of electronically controlled transmissions
Transmission Oil
TemperatureTOTIndi
cat
es temperature of transmission fluid
Transmission RangeTRThe ran
g
e in which the transmission is operating
Transmission Spe
e
d
Sensor
TSSIndi cat
es rotational speed of transmission output shaft or turbine shaft
V
Vacuu
m
Solenoid Valve
VSVVacuu
m
operated valve used in the speed control system
Vacuu
m
Solenoid Valve
(atm)
VSV VAVacuu m
atmospheric valve used in the speed control system
Vacuu
m
Solenoid Valve
(rel)
VSV VRVacuu m
release valve used in the speed control system
Vacuu
m
Solenoid Valve
(vac)
VSV VVVacuu m
valve used in the speed control system
Variable Valve TimingVVTA
s
ystem by which the relationship of the crankshaft and camshaft may be
altered during engine running
Vehi cl
e Battery Adapter
VBAProvide
s
electrical power to the PDU
and supplies a battery reference level
Vehicl
e Condition Monitor
VCMInst
rum
ent panel display which warns of faults
Ve
hic
le Emission Control
Information Label
VECI Label
Vehi cl
e Identification
Number
VINN u
mber assigned to the vehicle by the manufacturer, primarily for licensing
and identification purposes
Vehi cl
e Interface Adapter
VIAExtends the
PDU ca
pability and provid
es a parallel interface to vehicle
harnesses and ECMs
Vehicle Spe e
d Sensor
VSSSens
or which provides ve
hicle speed information
Viscosity In
dexVI
Voltage RegulatorVRDe
vice which regulates the variable output voltage of a generator
W
Wat
tWSI unit of power (1 hp = 7
45.7 watts)
W
i
de Open Throttle
WO
TFu
ll throttle position

Identification
Codes -
Identification Codes
Descr
iption and Operation
En

gine Number
The en
gine number (10 digits) is stamped on a raised pad on th
e front of the engine block near the thermostat housing. The
piston grade reference (8 digits) is also shown.
Automatic Transmission
Number
The
serial number of the transmission unit is displayed on
a metal or bar code label attached to the LH side of the
transmission casing.
Veh
icle Identification
Dependent
upon market, the VIN and other info
rmation is displayed on a label located ei ther on the rear edge of the LH front
door or on the body front upper crossmember. For certain mark ets, the VIN appears on a bar code label referred to as the
Certification Label and additionally carries the month and year of manufacture, vehicle weight data and paint and trim codes.
The VIN is also displayed on a plate visible through the windshie ld. It is essential that the vehicle identification number (VIN)
is quoted when ordering parts, and in all associated correspondence.

ItemDe
scription
GVW

R
G
ross Vehicle Weight Rating
GAW

R F
Gros
s Front Axle Weight Rating
GAW

R R
Gros
s Rear Axle Weight Rating
Pai

nt
Pai
nt Code
TrimTrim

Code

Date of
Manufacture
T
h
e date of manufacture (Build Date) of a vehicle is define
d as the calendar month and year in which the bodyshell and
powertrain are combined and the completed vehicle leaves the production line. For certain markets, VIN labels carry the
month and year of manufacture. For other markets, the vehicle Build Date is also displayed on a metal plate located at the
top of the battery tray in the trunk.
ANTI-T
HEFT LABELS
F
or
some markets, anti-theft labels bearing the VIN printed on
a special anti-forgery background are positioned on certain
body components. An additional anti-theft label is positioned on the LH side of the engine/automatic transmission casing.
Anti-theft labels must not be removed from a vehicle unless necessitated by component renewal.


ItemDe scrip
tion
1Gross Vehic
l
e Weight
2Gross Trai
n W
eight
3Maxim
u
m Permitted Front Axle Loading
4Maxim
u
m Permitted Rear Axle Loading

Jacking and Lifting - Jacking
Description an
d Operation
The vehicle jack and wheel chock are stored in the trunk as part of the vehicle toolkit.
Use of the vehicle jack and workshop jacks is desc ribed in the general procedures in this section.
Jacking Points

The four vehicle jacking points:
Are situ
ated below the body side members.
Are l

ocated behind each front wheel
and in front of each rear wheel.
Consist
of a square-section socket, pr
otected by a rubber cover, to provide positive engagement with the vehicle
jack.
Provi
de the support points for the four
lifting pads of a wheel-free lift.

Jacking and Lifting - Vehicle Recovery
Description an
d Operation
• NOTE: Prior to recovery, ensure that the vehicle keys are available and the security system disarmed.
Vehicle recovery methods are:
By fl
at-bed transporter.
By rear suspended tow.


By emergency to

wing for
very short distances.
Gears
hift Interlock
The
gear selector lever can only be moved
from the Park position by turning the igni tion key to position II and depressing
the brake pedal.
To remove the key from the ignition switch, the gear select or lever must be moved to the Park position. With the key
removed, the gear selector is locked in the Park position.
The selector lever can be manually unlocked from the Park position in the event of electrical failure or when moving the
vehicle without power. Refer to the general procedure in this section.
Transporter or Trailer Recovery

When the vehicle is being recove red by transporter or trailer:
The parking brake must be
be applied and the wheels chocked.
The

gear selector lever must be in Ne
utral. Do not select Park as the park ing lock mechanism may be damaged by
the forward and backward rocking motion of the vehicle.
The ve
hicle must be securely tied down to the transporter or
trailer. There are four tie-down brackets on the vehicle
underbody. Do not use the vehicle towing points or crossbeam tie bar.

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.

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.