2005 JAGUAR S TYPE wheel

JAGUARS-TYPEOccupant Protection
33
Airbags
Driver Airbag
The driver airbag module is fitted in the centre of
the steering wheel and is of conventional design.
A reduced charge propellant (Ôde-poweredÕ) is
used to minimise impact effects where the driver
is seated close to the wheel.
The module is secured by two side screws on the
left and right underside of the steering wheel.
Passenger Airbag
WARNING:
Do not place objects on the passenger airbag
deployment panel. Injury could occur if the
airbag contacts an object during inflation.
The passenger airbag uses a heated gas inflator
(HGI) system instead of a solid propellant. This
system is inherently ÔcleanÕ since the inflation gas
is a lean hydrogen/air mixture and the by-
products are water vapour and air. Although the
gas is not classified as an explosive, the possible
effects of accidental deployment when handling
or working close to the unit are similar to those of
other types of airbag. It is recommended that
current safety procedures are also followed when
handling the HGI modules.
The HGI airbag module has fewer components
than previous types, consisting of:
¥ 140 litre bag
D.501.1776
CENTER REAR SEAT BELT RETRACTOR ASSEMBLIES
J.501.1785
PASSENGER AIRBAG
¥ Aluminium pressure vessel containing a
mixture of 12% hydrogen/88% air at a
pressure of 180 bar.
¥ Pressure vessel end plug with burst disc.
¥ Pyrotechnic igniter assembly fitted to
pressure vessel end plug.
The igniter is electrically triggered from the
Restraints Control Module (RCM). When triggered,
the igniter fires a high speed ÔdartÕ along the
length of the pressurised cylinder, producing a
heated trail (due to friction) which causes rapid
and even combustion of the gas throughout the
cylinder. The igniter also ruptures the burst disc in
the end plug, allowing the expanding gases from

JAGUARS-TYPEChassis
47
Front Suspension
The independent front wheel suspension is a
double wishbone axle arrangement with
aluminium control arms. The two arms are of
different lengths, which minimises the changes in
track and camber. Inclination of the upper control
arm axis provides anti-dive front suspension
action. There are two front cross members,
known as Number 1 and Number 2.
Number 1, the forward cross member, is a steel
fabrication, non-isolated, which locates the lower
control arm front mounting, the anti-roll bar and
the cooling module.
The rear cross member, Number 2, is an
aluminium casting, non-isolated and it locates the
lower control arm rear mounting, the power
steering rack and the engine hydro-mounts.
WARNING: No attempt must be made to
weld or repair the aluminium cross
member. If it is damaged, a new one must
be installed.
Lower Control Arm
The lower control arm is an aluminium forging
and has locations for the damper and the anti-roll
bar drop link. It is mounted with one hydro-bush,
the front lower bush, and one rubber bush, both
serviceable. This is the first time that a hydraulic
bush has been fitted to a Jaguar wishbone. The
hydro-bush is tuned for refinement and helps to
J.204.402
reduce brake vibration.
Service adjustments for caster and camber can be
made to the lower control arm geometry with the
addition of cam bolts (not supplied with the
vehicle).
LOWER CONTROL ARM
J.204.402
Lower
Control Arm
Anti-roll BarAnti-roll Bar
Drop Link

JAGUARS-TYPE
D.204.400
Chassis
48
D.204.440
VERTICAL FRONT KNUCKLE UPPER CONTROL ARM
D.204.440
D.204.400
Upper Control Arm
The upper control arm is also an aluminium
forging, mounted with two rubber bushes and has
an integral, non-serviceable ball joint.
Vertical Front Knuckle
The vertical front knuckle is an aluminium casting
with integral steering arm, installed between the
upper and lower control arms. The lower ball joint
is serviceable and is a press fit. The knuckle
locates the upper balljoint, riveted disk shield and
brake calliper and wheel bearing/hub. The wheel
bearing is a new type and contains the integral
ABS rotor and sensor. The bearing is not
serviceable and must be replaced as a complete
unit. A service kit is available for the ABS sensor.
Vertical Front Knuckle
Disc Shield
Wheel
Bearing/Hub

JAGUARS-TYPEChassis
49
Rear Suspension
The rear suspension is a double wishbone
arrangement with aluminium control arms. The
rear crossbeam is steel fabricated and isolated to
the body with four bushes. The crossbeam locates
the upper and lower control arms and the anti-
roll bar.
Control arms are aluminium castings and heavily
inclined in plan view. The lower control arm
locates the damper and anti-roll bar drop link.
The damper fixing is tapped into the aluminium
casting.
The upper control arm has one cross axis bush
and one rubber bush. It contains an integral
balljoint.
The rear knuckle is an aluminium casting and has
a press fit cartridge bearing.
The independent rear suspension upper and
lower front bushes are conventional rubber
bonded bushes. The upper and lower rear bushes
contain no rubber and are essentially pressed in
ÔroseÕ bearings for superior suspension geometry
control. These are common components between
all vehicle variants and are a similar concept to
D.204.370
D.204.441
REAR SUSPENSION
D.204.370
REAR KNUCKLE
D.204.441
Rear Knuckle
Disc Shield
Wheel
Bearing/Hub

JAGUARS-TYPEChassis
50
D.204.399
FRONT SPRING AND DAMPER
D.204.399
Wheel Alignment
Camber caster and toe are adjustable on the front
suspension only. Toe is the only adjustment on the
rear suspension. Camber and caster are adjusted
by means of eccentric cams on the lower control
arm mounting bolts. The front toe is adjusted by
use of the front tie rod. The rear toe is adjusted by
the use of toe link assemblies connecting the
knuckles to the rear sub-frame.
Anti-roll Bars
There are two types of front anti-roll bars, one for
all V6 and base V8 engined vehicles and one for
V8 sport. There are two types of rear anti-roll
bars, one for all V6 and base V8 engined vehicles
and one for V8 sport.
All anti-roll bars are similar to current saloon
except that the front bushes have moulded insert
for tuning.
Springs and Dampers
There are numerous variants to suit both
ÔstandardÕ and ÔsportÕ derivatives of the V6 and V8
engined vehicles. Both front and rear springs and
dampers are similar to current sports vehicles.
With a strut type assembly, integrated top mount
and two-position lower spring pan. The front and
rear co-axial strut and spring assemblies are
installed between the lower control arms and the
vehicle body.
Sports dampers are CATS only, as XK series.
The CATS suspension is similar to the system
introduced on the XK8. It is a two-stage adaptive
damping ride control. The control module is
located in the rear left-hand corner of the spare
wheel well. Three accelerometers are fitted. The
front vertical and lateral accelerometers are
mounted as an assembly to the vapour
management valve bracket. The lateral
D.204.401
the A-frame bush on current sports and saloon
vehicles. The bushes are not bonded in place but
require a special lubricant when assembling. Care
must be taken to ensure that the replacement
bushes are pushed fully home, the angular
orientation of the bushes is important and it is
essential to mark the position of the subframe
before removing from the vehicle or else driveline
alignment will be lost.
REAR SPRING AND DAMPER
D.204.401

JAGUARS-TYPEChassis
51 accelerometer is used for Dynamic Stability
control (yaw control). The rear vertical
accelerometer is fixed to the rear electronic
control module (RECM) bracket on the rear right-
hand side of the luggage compartment between
the rear wheel arch and the rear lamp pack.
Suspension Alignment
A special tool has been designed to enable correct
alignment of the suspension to the body.
Connected to a personal computer, a transducer
with a wire measuring device is fitted to a plate
attached to the Number 2 cross member.
Alignment pins are fitted to the body front and
rear to the left-hand side chassis rail and to the
rear suspension beam. Measurements are taken
from one point on the Number 2 beam. Then the
transducer is transferred to the other point on the
beam and a second set of measurements taken.
The PC then calculates if there is any
misalignment and by how much, and displays the
information on the screen. The beam(s) are then
adjusted to bring the alignment back within limits
and a further series of measurements are taken.
This process is repeated until the alignment is
correct and the beams are then tightened. A
print-out of the measurements is to be attached to
the job card as a permanent record of alignment.
Note that camber, caster and toe may be required
if any of the beams have been adjusted.

JAGUARS-TYPE
Wheels and Tyres
Chassis
52
Wheels
All wheels are alloy except for the space saver
wheel which is steel. The space saver wheel is not
available for USA, Canada or Mexico.
There are three wheel styles:
¥ 7 x 16 Classic
¥ 7.5 x 16 Dynamic
¥ 7.5 x 17 Sport (option)
Each wheel has five exposed wheel nuts which are
smaller than current cars at 19mm A/F
Locking wheel nut policy is the same as current
sedan vehicles.
Ty r e s
Two sizes - three types:
¥ 225/55R16
All season (NAS markets)
Summer (European/Rest of World)
Winter (accessory)
¥ 235/50R17
Summer (European/Rest of World)
Winter (accessory)
Tyres for the European and Rest of World markets
Summer/Winter, are Pirelli.
The all season tyres are Bridgestone and for the
NAS markets only.
Tyre pressures are:
¥ 26/28 psi comfort
¥ 32/34 high speed or fully laden.
D.501.1477
S-TYPE WHEELS
D.501.1477,1478 & 1479
Classic
Sport
Dynamic
D.501.1478
D.501.1479

JAGUARS-TYPEChassis
56
D.206.177
current vehicles and the 12 valve unit has a 47-
way connector with lever cam. DSC calculates the
real vehicle motion (forward and gearing) and
compares it to the direction initially chosen by the
driver. A steering rate sensor is located on the
steering column and is used to calculate steering
angle. A yaw rate sensor and lateral accelerometer
are located on a bracket behind the hand brake
lever and are used to calculate the vehicle under
or over steer and any side slip.
As soon as DSC recognises that the driver is not
reacting sufficiently to compensate a deviation,
DSC intervenes by applying brake force to each of
the four wheels individually to control yaw
Front Wheel Sensor
The front wheel active ABS speed sensors are
incorporated into the wheel bearings, connected
via a flying lead routed along the brake hose.
Rear Wheel Sensor
The rear sensors are mounted on the hub carrier
and connected by a flying lead routed along the
control arm. None of the sensors are adjustable.
Wheel speed sensors are new active sensors,
which are more sensitive at lower speeds that the
current saloon and sports wheel speed sensors.
Front and Rear Callipers
Front callipers are twin piston aluminium
construction. The ventilated disc sizes are 300 mm
x 32 mm. The rear brakes have cast iron callipers.
This is because of the hand brake operation using
the rear callipers. The ventilated disc sizes are 288
mm x 20 mm. Each rear calliper has a ball and
ramp park brake mechanism, operating on the
main calliper pads.
D.206.178
D.206.177
FRONT WHEEL SENSOR
REAR WHEEL SENSOR
D.206.178