1998 JAGUAR X308 Steering column bolts

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.

not ti
ghten eccentric bolt and nut.

4. 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.

5. Inst al
l 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.

6. Position an d
connect harnes
s to steering transducer.
RHD veh
icles. Position steeri
ng harness behind return
pipe.
Conne ct
harness to transducer.
7. 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.

Steering System - General Inform
ation - Steering System
D
iagnosis and Testing
I

nspection and Verification
1.
1. Verify t
he customer concern by driving the vehicle.
2. 2. Visually inspect for obvious signs of mechanical or electrical damage.
Mec
hanical Inspection Chart
Electrical Inspection Chart
Mechanical Checks
Incorrect
tire pressure, loose whee
l nuts, incorrect wheel alignment
Loose ti
e-rods
Loose dam

per and spring assemblies or ball joint
Loose s

teering column shaft universal joints
Loose pinc

h bolts on steering column shaft
Loose steeri

ng gear assembly
Check f

or external damage to the steering gear.
- Damaged tie-rods
-
CAUTION: If a steering gear assemb ly is returned under warranty with leaking seals, but there is also
damage to the steering gear boot/boots the steering gear warranty will be invalid. This is due to the steering
gear seals being damaged due to fore ign materials entering the steering gear boot and damaging the steering
gear seals thereafter.
Damaged steering gear boot
Damaged accessory driv
e belt
Bin

ding or misaligned steering co
lumn, pump or steering gear
Incorrect fluid
level
Hose leaks o

r line restrictions
Hose fou

ling bodywork
El

ectrical Checks/Tests
Make sure all

connectors are in plac
e (steering gear Servotronic solenoid and steering control module (SCM) - if
applicable)
Make su
re all the fuses are in place and not blown
D

ISCONNECT the steering gear transducer
and the steering should become heavy
TEST e
lectrical values:
- Power Supply to the SCM = 12 Volts
- Steering gear transducer resist ance 7.0 to 7.5 Ohms is normal
(
limits: less than 5 Ohms and greater than 9 Ohms would

be declared unacceptable)

- Steeri
ng gear transducer voltage = 6 Volts
- Steering gear transducer cu rrent = 840 mA at 0 mph reducing to 0 mA at maximum speed

Function
al
Fl
uid
leakage
O
verfilled system.
CORRECT the
fluid leve
l as necessary.
Compon
ent leak.
•
NOTE: Record the position of the le
ak and some indication of the rate
of the leak on the Warra nty Return Record Sheet.
LOCATE
the suspect component or CHECK hose connections and
repair as necessary.
Damaged fluid cap. INST
ALL a new fluid cap.
Loose or damaged h

ose
fittings.
TI
GHTEN or INSTALL a new hose as necessary.
Leakage at

power
steering pump.
INST
ALL a new power steering
pump as necessary. For
additional information,
REFER to Section 211
-0
2 Power Steering
.
Fl

uid
leakage
Leakage
at steering hose
to steering gear connection.
CHECK
steering hose to
steering gear conn ection for leakage.
CHECK and TIGHTEN the steeri ng hose to steering gear
connection retaining bolt s/bolts as necessary.
Power steeri
ng fluid
leakage at O-ring seals.
CHECK
the power steering system fo
r signs of steering fluid loss
from O-ring seals.
INST
ALL new O-ring seals as necessary.
BLEE

D the power steering system.
For additional information,
REF
ER to Section 211
-0
0 Steering System
- Ge
neral
Informati

on
.
Power steeri

ng fluid
leakage from transfer pipes.
CHECK
the power steering system fo
r signs of steering fluid loss
from the transfer pipes.
CHECK
and TIGHTEN the transfer pipes if required, INSTALL new

transfer pipes as necessary.
BLEE
D the power steering system.
For additional information,
REF
ER to Section 211
-0
0 Steering System
- Ge
neral
Informati

on
.
Power steeri

ng fluid
leakage from the steering
gear.
CHECK
the power steering gear for signs of fluid loss.
INST

ALL a new steering gear as
necessary. For additional
information,
REFER to Section 211
-0
2 Power Steering
.
Power steeri

ng fluid
leakage from steering gear boot.
CHECK
the power steering gear for signs of fluid loss.
INST

ALL a new steering gear as
necessary. For additional
information,
REFER to Section 211
-0
2 Power Steering
.
Cond

ition
Possib
le Sources
Acti
on
F

ree play at steering wheel

Exce
ss play in the steering

linkage.
CHECK
the steering linkage for excess play.

For additional information, REFER to the
Steering Linkage Inspection and Backlash (Freeplay) Check in this section.
S
teering wheel loose.
CHECK
and TIGHTEN the steering wheel
retaining bolt/bolts as necessary. For additional information,
REFER to Section 211
-0
4 Steering Column
.
Lower steeri

ng column
pinch bolt loose.
CHECK
and TIGHTEN the lower steering
column pinch bolts as necessary. For additional information,
REFER to Section 211
-0
4 Steering Column
.
Exce

ssive wear in lower
steering column.
CHECK
for lower steering column for wear in

the universal joints. If wear is present,
INSTALL a new lower steering column as necessary.
W
ear in suspension joints.
CAU
TION: DO NOT attempt to adjust the
steering gear yoke. Failure to follow this instruction
will result in the steering gear warranty to become
invalid.
CHECK
for excess wear in the front
suspension joints. For additional information,
REFER to Section 204
-00
Suspension
Sy

stem
- General
Information
.

Vehicl
e wanders from side to

side on the road, when the vehicle is driven straight ahead and the steering wheel is held in a firm position
Incorrect ti re
pressure or
tire size.
CHECK and ADJ
UST the tire pressure. For
additional information,
REFER to Section 204
-0 4
Wheels and Tires
. IN
ST
ALL a new tire as necessary. For
additional information,
REFER to Section 204
-0 4
Wheels and Tires
.
Vehi
cl
e is unevenly or
excessively loaded.
A D
JUST the load evenly.
Loose/worn ti
e-
rods.
INST
ALL a ne
w tie-rod
end. For additional
information,
REFER to Section 211
-0 3
Steering Linkage
.
Steeri
ng gear bolts loose
o
r damaged.
TIGHTE
N or INSTALL
new bolts.
Loose or worn suspensi
on
ball jo
int(s).
INST
ALL a ne
w suspension ball joint
assembly. For additional information,
REFER to Section 204
-01 Fron
t Suspension
.
Steeri
ng column uni
versal
joint pinch bolt loose.
TI G
HTEN the steering column universal joint

pinch bolt. For additi onal information,
REFER to Section 211
-0 4
Steering Column
.
Incorre
ct
toe adjustment.

ADJUS
T as necessary. For additional
information,
REFER to Section 204
-00 Sus
pension
Sy
ste
m
- General

Information
.
Loose or worn rear
susp
ension.
TIGHTEN
loose, or IN
STALL new rear
suspension components. For additional information,
REFER to Section 204
-0 2
Rear Suspension
.
Vehicle t
e
nds to pull to one
side when driven on a level surface
Incorrect ti
re pressure.
Incorrect
ti
re size or
different tire/tread type.
Uneven tire wear
CHECK and ADJ
UST the tire pressure. For
additional information,
REFER to Section 204
-0 4
Wheels and Tires
. IN
ST
ALL a new tire as necessary. For
additional information,
REFER to Section 204
-04
Wheels and Tires
.
Vehicl

e is unevenly loaded
or overloaded.
Adjust the load
.
Incorre
ct
toe adjustment.

ADJUS
T as necessary. For additional
information,
REFER to Section 204
-00 Sus
pension
Sy
ste
m
- General

Information
.
Dam
a
ged front suspension

components.
I N
STALL new front suspension components
as necessary. For addi tional information,
REFER to Section 204
-01 Fron
t Suspension
.
Damaged rear
suspen
sion
components.
INST ALL ne
w rear suspension components
as necessary. For addi tional information,
REFER to Section 204
-0 2
Rear Suspension
.
Steeri
ng gear val
ve effort
out of balance.
SHIF T the
transmission into NEUTRAL while
driving at no more than 30 miles/hour (50 km/h) and turn the ignition to position I
(engine OFF-coasting). If the vehicle does
not pull with the engine off, INSTALL a new steering gear. For additional information,
REF E
R to Section 211
-0
2
Power Steering
. If t
he
vehicle does drift with the engine off,
CROSS SWITCH front wheel assemblies.
If the
vehicle pulls to
the opposite side,
SWITCH wheels that were on the rear to the
same side on the front.
If the v
ehicle pull dire
ction is not changed,
CHECK the front susp ension components
and toe adjustments. For additional information,
REFER to Section 204
-01 Fron
t Suspension
.
Chec
k
the front and rear
brakes for correct operation.
ADJUS
T as necessary. For additional
information,
REFER to Section 206
-0 0
Brake System
-
General Informati on.
Check fo
r bent rear
INST
ALL ne
w rear suspension components

Description of General Stee
ring System Noises
Boom
Rh
ythmic sound like a drum roll or distant
thunder. May cause pressure on the ear drum.
Buzz
Low-pitched soun
d, like a bee. Usually associated with vibrations.
Chatt

er
Rapidly rep

eating
metallic sound.
Chuckle
Rapid noise that soun
ds like
a stick against the spokes of a spinning bicycle wheel.
F
eedback (knocking noises in the
steering gear) - condition where roughness is felt in the steering
wheel by the driver when the vehicle
is driven over rough surfaces
REF
ER to Section 211
-0
3 Steering Linkage
.
Steeri

ng gear
retaining bolts
loose or damaged.
CAU
TION: DO NOT attempt to adjust the
steering gear yoke. Failure to follow this instruction
will result in the steering gear warranty to become
invalid.
CHECK
and TIGHTEN the steering gear
retaining bolts.
INST
ALL new retaining bolts as necessary.
For additional information,
REFER to Section 211
-0
2 Power Steering
.
L

oose suspension
bushing, bolts or ball joints.
TIGHTE
N or INSTALL new components as
necessary. For additi onal information,
REFER to Section 204
-01
Front Suspension
.
Steeri

ng column
retaining bolts loose.
CAU
TION: DO NOT attempt to adjust the
steering gear yoke. Failure to follow this instruction
will result in the steering gear warranty to become
invalid.
CHECK
and TIGHTEN the steering column
retaining bolts/nuts and pinch bolts if required. For additional information,
REFER to Section 211
-0
4 Steering Column
.
Exce

ssive wear in
steering column assembly.
CHECK
for steering column for wear in the
universal joints and be arings. If wear is
present, INSTALL a new steering column as
necessary. For additi onal information,
REFER to Section 211
-0
4 Steering Column
.
Ni

bble (Shimmy) Oscillation of the
steering wheel (not vertical which is SHAKE). This is driven by road wheel imbalance.
Road wh
eel
imbalance.
CHECK
for road wh
eel imbalance.
CHECK for
rele
vant SERVICE
BULLETINS/SERVICE ACTIONS for the
vehicle on Jaguar Communications Online (JCOL) or in hard copy form.
S
teering wheel
replacement.
CHECK for
rele
vant SERVICE
BULLETINS/SERVICE ACTIONS for the
vehicle on Jaguar Communications Online (JCOL) or in hard copy form.
Rac
k replacement.

CHECK for
rele
vant SERVICE
BULLETINS/SERVICE ACTIONS for the
vehicle on Jaguar Communications Online (JCOL) or in hard copy form.

Steering Column -
Torques



Comp

onent
Nm
Upper
steering column upp
er fixings
22
-
28
S
t
eering wheel to column securing bolt
34
-
46
Upper
bracket
to body screws
22
-
28
Upper
steering colu mn lower fi
xings
17
-
23
Lower steeri
ng col
umn pinch bolts (upper and lower)
28
-
34
U
pper
and lower cowl securing screws
1.
5 (
nominal)
D
river ai
r bag fixings
4 -
5
Colum
n switchgear to column
4 -
5

The lower steeri ng col
umn:
Is a han
ded assembly
.
Incorporates
a col
umn to toeboard seal
which comprises a rolling element having two, low friction, PTFE rings. The
rolling element locates in a rubber b oot which seals to the toeboard.
Has a lowe
r universal joint connecting the
lower column to the steering rack.
Has an upper un
iversal joint connecting
the lower column to the upper column.
Has a NVH damper in
corporated into
the upper universal joint assembly.
May be installed in an
y orientation on the universal joint splines.
R
e
quires no setting or adjustment.
Has no s
e
rviceable components.
It is essential to disconnect the lower column from the steer ing rack before removing the engine or front suspension
crossbeam.


It e
m
Par
t
Number
De
scr
iption
1-Boot
2-Uni
v
ersal joint to upper column
3-Lower steeri
ng col
umn shaft
4-R
e
taining bolts
5-Uni
v
ersal joint to steering rack

Lower Steering Column