Page 55 of 133

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
Page 56 of 133

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.
Page 64 of 133

JAGUARS-TYPEChassis
59
D.211.248
FRONT STEERING ARM requires a Service tool to assist removal. Low-
pressure hose connections are made using
Constant Tension (CT) clamps. Pinion hydraulic
connections are orientated with the bottom
connector low pressure with the longer nut, as
current vehicles.
The PAS fluid is for PAS only; it is not to be used
for transmissions. After manual filling, the system
must be bled using a vacuum pump to remove all
the air from the system to prevent system noises.
Fluid level is checked through a sight window on
the reservoir.
Components replaceable are complete pump,
steering rack, reservoir or hose assembly.
A non-serviceable 10-micron filter is located
within the reservoir to maintain fluid cleanliness
throughout the life of the vehicle. It is essential as
with all Jaguars that the system does not become
contaminated. Cap all ports on disassembly to
prevent contamination ingress. As with current
vehicles, the fluid and reservoir must be renewed
if any major component is replaced i.e. Rack,
pump or cooler.
The road wheels should be set straight ahead and
the steering wheel locked (using service tool
F7LC-3F732-BF) when removal and assembly of
the steering gear or intermediate shaft is required.
This is necessary to prevent damage to the air bag
clock spring within the steering upper column
assembly. The intermediate shaft can only be
assembled to its mating components in one
location. Steering wheel alignment can only be
achieved by adjustment at the tie-rods. A
dimensional check of the steering rack position
may be necessary to verify rack centre.
Steering Column
The steering column assembly is completely new
and uses no parts from previous Jaguar
assemblies:
¥ Construction of the upper column assembly is
based on the use of aluminium extrusions and
castings.
¥ A two shaft lower column assembly is used.
¥ The electronically controlled steering lock, the
steering column lock module (SCLM), is a
physically separate component from the
ignition switch which is fascia mounted.
¥ The dynamic stability control (DSC) steering
wheel position sensor is fitted to the upper
column assembly.
Steering Wheel
The steering wheel consists of a magnesium
armature with a central steel insert. The steering
column and wheel insert are splined with a flat so
that the wheel can only be fitted in one position.
Any misalignment of the steering wheel is
corrected by adjusting the tie rods. The splined
fitting also has a locking taper which requires the
use of a 2 legged puller to remove the wheel.
The steering wheel incorporates the the airbag
module, horn mechanism and the optional cruise
control and audio/phone switches.