1998 JAGUAR X308 power steering fluid

Do not al
low the power steering fluid level in the power
steering fluid reservoir to fall below the minimum power
steering fluid level. Fa ilure to follow this instruction may result
in damage to the po wer steering system.
Make sure the engine is swit ched off as soon as the full
4 litres of power steering flui d has entered the power steering
fluid reservoir.
Flush the power steering system.
St art
the engine
W
it
h assistance turn the stee
ring slowly lock to lock 3
times at approximately 1 revo lution every 5 seconds.
Continue
to flush the power steering system until 4
litres of power steering fl uid has been added to the
power steering reservoir. This should take
approximately 30 seconds.

10 . CAUTI
ON: Be prepared to
collect escaping fluids.
Remove the suitable funnel.

11 . CAUTI
ON: Be prepared to
collect escaping fluids.
Remove the suitable pipe to th e power steering return hose.
12. CAUTI
ON: Be prepared to
collect escaping fluids.

•
NOTE: Note the orientation of the clip.
If a quick release coupling is fitt ed to the power steering return
hose, connect the power steerin g fluid return hose to the
coupling by installing the clip.
13. Install a new power steering fl uid reservoir. For additional
information, refer to: (211-02) Power Steering Fluid Reservoi r - 4.2L/3.0L/2.7L Diesel
(Removal and Installation),
Power Steering Fluid Reservoir - 3.0L Diesel (Removal and
Installation).

Steering System - Gen
eral Informatio
n - Power Steering System Vacuum
Filling and Bleeding
Gen e
ral Procedures
Fluid Ho

ses



1.

Parts L i
st
It
e
m
De
scr
iption
1R
e
turn hose
2High
pressure h
ose
2. If vacuum filling equipment is available, proceed as follows:
Disconnect both the
high pres
sure hose and return hose
from the PAS pump and the re turn hose from the steering
rack.
D rain as much fl
uid as possible from the system by
turning the steering from lock to lock two or three times.
Re conn
ect all hoses.
Fi
ll
the system using the vacuum equipment according to
the manufacturers instructions.
St art
the engine and top up
the fluid as necessary.
Turn the steering from lock to lock two or three ti mes wi
th
the engine running, topping up with fluid as necessary.
If possibl
e, run the engine for twenty minutes to expel any

remaining air.

Power Steering -
Lubric
ants, Fluids, Sealants and Adhesives
Capacities
Torques


UnitSp
ecification
PAS flu
i
d
De
xr
on 3
UnitLi
t
ers
PAS syste
m1,0
PAS reservoi
r0,4
Com p
onent
Nm
Rac
k
mountin
g brac
ke
t to suspension crossbeam
40
- 50
PAS pump to front mounti
ng bracket
22
-
26
P
AS pu
mp assembly to cylinder block
38
-
48
Pul
l
ey to PAS pump
18
-
24
Hi
gh pressure hose to PAS pump22 -
28
Rack
pipe latch plate bolt8.5 -
11.5
R
e
servoir mounting bracket to body nuts
4 -

5
R
e
servoir mounting bracket clamp
4 -

5
Fluid cooler to body2.
5 -
3.5
Transfer pipe
to steering rack7 -
8
Transfer pipe
to hydraulic con
trol valve
7 -

8

Power Steering - Power Steering
Description an
d Operation

Parts List
The power steering system is a rack and pinion design, with an engine-dri ve n pump providing the steering assistance. The
system features variable steering assistance with vehicle spee d, a variable ratio steering rack, and a hydraulic control valve
which has a torsion bar arrangement giving improved center feel to the steering.
Absolute cleanliness must be observed wh en replenishing the fluid or dismantling any part of the system. If any major
component is renewed a new fluid rese rvoir must be fitted. New fluid from a sealed container must be used.
It
em
Par
t Number
De
scription
1—Steeri

ng rack assembly
2—Power as

sisted steering pump
3—F

luid reservoir
4—F

luid cooler
5—Hoses and pipework
6—In-

line quick-fit connector

P a
rts List
The power assisted steering pump:
Is mo u
nted on a bracket installe
d on the front of the engine.
Provides hydraul
ic pressure fo
r the power steering system.
Is of the roll
er vane type.
Is belt driven from th
e en
gine crankshaft.
Will provide 1
05 bar f
luid pressure.
The pump is not serviceable and should be renewed as a complete assembly.
Fluid Reservoir
Re
servoir and Hoses

Ite
m
Par
t
Number
De
scr
iption
1—Power as
si
sted steering pump
2—Engine
m
ounting bracket
3—High
pressure port

Power Assisted Steering Pump

Power Steering - Power Steering
Diagn
osis and Testing
Refer to the Description and Operation sub-section for details of the power operated steering system and Servotronic control
system.
Power Steer ing Pressure Test

Test Equ
i
pment

Parts List
In
stalling Test Equipment
To
in
stall the pressure test equipment:
Pla
c
e a suitable drain tray below the PAS pump.
Install a hose clamp
on
the re
servoir to pump hose prior to disconnecting any hoses, to avoid unnecessary loss of
fluid.
Di sc
onnect the hose from the PAS pump high pres
sure outlet.
Ins
tall the pump outlet to hose ad
aptor. Do not omit the O-ring.
Conn
ect the pump adaptor to control valve hose of the test equipment.
Install th
e adaptor in the high pressure hose previ
ously re
moved from the pump outlet.
Conne
ct the connector of the test equipment hose to the adaptor.
R
e
move the hose clamp fro
m the reservoir hose.
Start th
e engine.
With the control valve OPEN and the engine idling , the following system pressures may be checked:
Du
ring turning.
W
h
en the steering is
held on full lock.
With
the steeri
ng at rest.
• WARNINGS:
TO AVOID EXCESSIVE HEATING OF THE PAS PUMP, DO NOT CLOSE THE VALVE FOR LONGER THAN NECESSARY.
Ite
m
Par
t
Number
De
scr
iption
1—Pressure

gauge hose
2—Pump return hose
3—Pump return hose connector
4—Test equi
pment to
HP hose adaptor
5—Pump HP outlet to hose adaptor
6—Pump adaptor
to control valve hose
7—Control valve

In
stallation
All vehicles

Route t
he steering gear transducer harness from behind
the power steering return pipe (right-hand drive vehicles
only).

12 . Remove the
power steering supply and return pipe retaining
plate bolt and with draw the plate.

13 . D
rain the power steering fluid.
Di
sc
onnect the power steering
supply and return pipes and
allow the fluid to drain.
Remove an d discard the ´O´ring seals from the
pipe
connectors.
Fi t su
itable blanking caps
to the pipe connectors and
pinion housing ports.
14. Remove the drain pan and discard the fluid.
15. NOTE: The steering gear mounting bushings are handed;
they are marked accordingly and must be replaced as a pair.
Remove the steering gear mo unting bracket bushings.
For additional information, refer to: Steering Gear Bushing

( 21
1-02 Power Steering, Removal and Installation).
16. NOTE: When removing the steering gear, manoeuvre the
power steering return pipe past the pinion housing to steering
gear pipes.
Remove the steering gear.
17. Using a tap (M10 x 1.5 mm), clean the steering gear to
crossbeam bolt hole threads.
1. If a new steering gear assembly is to be fitted, make sure
steering gear is centrali zed before installation.