power steering JAGUAR X308 1998 2.G Owner's Guide

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

Power Steering - Steering Gear
Remo
val and Installation
Remov
a
l
All vehicles
S
p
ecial Tool(s)

Taper Sep
a
rator
211-098 (JD 100)
1. Centralize steeri ng the wheel.
2. Raise and support the vehicle on a four-post ramp.
3. Place a suitable drain pan under the stee ring gear.

4. Fr
om below the vehicle, check that
steering gear is centralized
by aligning the centralizing notc h on the dirt protection cover
with the location hole in the pinion housing casting.

5. NOTE : R
ight-hand shown, left-hand similar.
Remove and discard bo th tie rod end nuts.

6. NOTE : R
ight-hand shown, left-hand similar.
Detach both of the tie rod ends.
1. Fit the special tool to tie rod end.
2. Tighten the tool bolt to release the taper.
Re
move the tool.

Righ
t-hand drive vehicles
All vehicles

7. De
tach the steering
column lower shaft.
1. Loosen the steering column lower shaft retaining bolt.
2. Remove and discard the st eering column lower shaft
retaining bolt.
3. Detach the steering column lower shaft.

8. Di
sconnect the steering gear transducer electrical connector.

9. Cut an
d discard the stee
ring gear transducer harness tie-strap.

10
.
Cut and discard the power steeri ng return pipe tie-strap.
11. Detach the power steering re turn pipe from the mounting
rubber.

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.

2. NOTE
: When installing the steering gear, manoeuvre the power

steering return pipe past the pinion housin g to steering gear
pipes.
• NOTE: A new steering gear assembly is supplied with a dirt
protection cover/cent ralizing cap fitted.
Position the steering gear to vehicle.
3. Install the steering gear mo unting bracket bushings.
For additional information, refer to: Steering Gear Bushing

(
211-02 Power Steering, Removal and Installation).

4. Conne
ct the power steering su
pply and return pipes to the
pinion housing.
R
emove the blanking caps an
d install new ´O´ring seals in
pipe connectors.
lubri
cate the ´O´ring seals wi
th clean power steering fluid.
R
emove the blanking caps from
the pinion housing ports.
Position the power
steering su
pply and return pipes to the
pinion ports and seat ´O´rings.

5. Attach
the power steering supply
and return pipes to the pinion
housing.
Ensure the power steering su pply
and return pipes and the

retaining plate are correctly seated.
Install th
e bolt.
Tigh

ten to 9-12 Nm.
6. Clean any fluid spillage from the steering gear and surrounding
area.
7. Attach the power steering return pipe to the steering gear.
Attach
the rubber support to
the power steering return
pipe.
Rout
e the steering gear transducer harness behind the
power steering return pipe (right-hand drive vehicles

Right
-hand drive vehicles
All vehicles

only
).

8. Install a new power st ee
ring return
pipe tie-strap.

9. Install a new steering gear transducer harness tie-strap.

10 . Conne
ct the steering gear transducer electrical connector.
On righ

t-hand drive vehicles
, position the steering gear
transducer harness behind th e power steering return pipe.

11
. NOTE
: Right-hand shown, left-hand similar.
Attach the tie rod end.

Locate the ti
e rod end into the steering arm.
Inst

all a new nut.
Tigh

ten the nut to 22-28 Nm.

12
.
NOTE: Make sure the steering wheel and wheel and tire
assemblies are in the straight ah ead position before fitting the
steering column lower shaft.
Attach the steering column lower shaft.
1. Attach the steering column lower shaft.
2. Install the steering column lower shaft retaining bolt.
1. Tighten to 28 - 34 Nm
.
3

. Tighten to 28 - 34 Nm.
13. Fit a new power steering fluid re servoir, refill with new power
steering fluid and blee d air from the system.
For additional information, refer to: Power Steering System
Fillin
g and Bleeding

(211-00 Steering System - General
Information, Gene ral Procedures).
14. Check and adjust the front toe.
For additional information, refer to: Front Toe Adjustment

(204-00 Suspen
sion System -
General Information, General
Procedures).

Power Steering - Steering Gear Bush
ing
Re
mo
val and Installation
Remov
a
l
•
NOTE
: The steering gear bushings are handed; They ar
e marked accordingly and must be replaced as a pair. 1.
Raise the vehicle on a four-post ramp.

2. Loosen , bu
t do not remove, th
e right-hand steering gear
mounting bracket retaining bolts.

3. Re
move the left-hand
steering gear mounting bracket retaining
bolts.

4. Re
move the left-han
d steering gear mounting bracket.
5. NOTE: Note the installation position of the bushing before
removal.
Remove and discard the left-h and steering gear bushing.