1998 JAGUAR X308 ECU

25. Remove back plate.
Re
move four screws securing
back plate to hub carrier.
Withdraw back plate
complete
with parking brake cable.

26 . Remove h
ub and carrier.
With
draw pivot pin
.
R
e
move hub and carrier assemb
ly from wishbone and axle
shaft.

27 . R
emove shim from each end of pivot pin sleeve.
28. Withdraw pivot pin sleeve from hub carrier.

I
nstallation

29
.
Secure hub carrier in a vise.

30
.
Remove and discard bear ings from hub carrier.

31
.
Remove bearing cup from hub carrier.
Posit
ion hub carrier on a piece of wood.
Position a lo

ng tapered drif
t in housing bore recess.
Remove bearin
g cup.
32. Repeat procedure to remove opposite end bearing cup and
discard both cups.
33. Remove hub carrier from vise.
34. Thoroughly clean all components.

1. Using a h
ydraulic press, install
new bearing cups in hub carrier.

1
. Position hub carri
er on press-bed.
2. Using special tool 100-013 and adapter 204-120, align bearing cup to hub carrier.
Al
ign assembly to ram, and
operate press to fully seat
bearing cup.
Repeat
procedure to fi
t other bearing cup.
2. Secure hub carri er in a vise.

19
.
Install wheel speed sensor on hub carrier.
Posit
ion sensor on hub carrier
and install and tighten bolt
to 7-10Nm.
Conne
ct wheel speed sensor harness to sensor.

20
.
Using new tie strap, secure wh eel speed sensor harness to
brake hose clip.
21. Install parking brake shoe s. Refer to 70.40.05.

22
.
Install special tool (204-195) on studs and install securing
nuts.
23. Tighten hub nut to 304-336Nm.

Instal
l the wheel an
d tire assembly.
1. Install wheel.
2. Install wheel nuts to secure wheel in position.
3. Lower vehicle.
4. Tighten wheel nuts in a diagonal sequence to:
Steel wh
eel 68-82 Nm.
Al
loy
wheel 88-102 Nm.

Driveshaft - Driveshaft
Remo
val and Installation
Remov
a
l
CAUTI
O
N: To preserve 'drive line' refine
ment, individual parts, other than fixings, MUST NOT be renewed. In the event
of any balance or driveshaft component related problem, the complete assembly must be renewed. Under no circumstances
may the flexible (Jurid) coupling be remo ved from the driveshaft (or its fixings be loosened). Do not drop or subject the
driveshaft to damage.
1. Disc
onnect the battery ground
lead and raise the vehicle for
access
2. Remove the front exha ust muffler, 30.10.18

3. Re
move the driveshaft from
the transmission flange.
If required, 'match mark'

the transmissi on flang and
coupling
Unscrew the fi xings (3)

4. Relea s
e the parking brake relay
lever mounting bracket fixings
(4) and allow the assembly to hang down

5. Disc onne
ct the driveshaft fr
om the differential flange
5. CAUTION: Under no circumstances must the
flexible coupling (or its fixings) be loosened or removed
from the drive shaft
1. 'Match mark' the FLEX IBLE COUPLING to the
differential DRIVE FLANGE
2. Remove the fixings (3)
6. Re
move the driveshaft
6. CAUTION: Ensure that the driveshaft front and
rear sections do not become disengaged. Secure the front
and rear sections to preven t sliding joint disengagement
during transport

In
stallation

(and axle shaft if i
t
is to be re-used)
1. Installation is the re verse of the removal procedure, noting the
following.

2. Secure the axle shaft.
1.
Apply thread locking agent, to the SPLINE, as
indicated.
2. Refer to the illustration - do NOT re-use the original
nut.

3. Re
fer to the illustration.

4. Re
fer to the illustration.
E
n
sure that the match marks ar
e aligned prior to securing
the fixing.
5. Check and adjust as required, the final drive unit oil level.
6. Check and adjust as required, the rear wheel alignment, 204-
02.

4.
Press the assembly

4. Fi
t the output shaft assembly to the final drive
Lubri

cate the 'O' ring and
seat the shaft assembly
Secu
re the assembly with the circlip

5. Ensure the correct circli
p location
U

sing a prybar, or similar, expand the circlip into its
undercut by applying outwar d radial pressure. Start
diametrically opposite to the circlip open ends and lever
against the drive flange
6. Verify the circlip location
1. The gap MUST be greater than 10,0 mm

Comp
onent Tests
Bra
k
e Booster
1.
1. Chec k all
hoses and connections. All unused vacuum connectors should be capped. Hoses and their connections
should be correctly secured and in good condition with no holes and no collapsed areas. Inspect the valve on the
brake booster for damage.
2. 2. Check the hydraulic brake system for leaks or low fluid.
3. 3. With the transmission in PARK, stop the engine and apply the parking brake. Pump the brake pedal several times
to exhaust all vacuum in the system.
4. 4. With the engine switched off and all vacuum in the system exhausted, appl y the brake pedal and hold it down.
Start the engine. If the vacuum system is operating, the brake pedal will tend to move downward under constant
foot pressure. If no motion is felt, the vacuum booster system is not functioning.
5. 5. Remove the vacuum hose from the brake booster. Manifold vacuum should be available at the brake booster end
of the hose with the engine at idle speed and the transm ission in PARK or NEUTRAL. Make sure that all unused
vacuum outlets are correctly capped, hose connectors are correctly secured and vacuum hoses are in good
condition. When it is established that manifold vacuum is available to the brake booster, connect the vacuum hose
to the brake booster and repeat Step 3. If no downward movement of the brake pedal is felt, install a new brake
booster.
6. 6. Operate the engine for a minimum of 10 seconds at a fast idle. Stop the engine and allow the vehicle to stand for
10 minutes. Then, apply th e brake pedal with approximately 89 N ( 20lb) of force. The pedal feel (brake
application) should be the same as that noted with the engine running. If the brake pedal feels hard (no power
assist), install a new valve and then re peat the test. If the brake pedal still feels hard, in stall a new brake booster.
If the brake pedal movement feels spongy, bleed the brak e system. For additional information, refer to General
Procedures in this section.
Bra k
e Master Cylinder
Usual
l
y, the first and strongest
indicator of anything wrong in the brake syst em is a feeling through the brake pedal. In
diagnosing the condition of the brake master cylinder, check pedal feel as evidence of a brake concern. Check for brake
warning lamp illumination and the brake fluid le vel in the brake master cylinder reservoir.
Normal Conditio
ns
The fo
llowing conditions are considered norm
al and are not indications that the brake master cylinder is in need of repair.
New bra
ke systems are designed to produc
e a pedal effort that is not as hard as in the past. Complaints of light
pedal efforts should be compared to the pedal effort s of another vehicle of the same model and year.
The fl
uid level will fall with brake pad wear.
Abnormal Conditions
•

NOTE: Prior to carrying out any diag
nosis, make sure the brake system warning indicator is functional.
Changes in the brake pedal feel or brake pedal travel are in dicators that something could be wrong in the brake system. The
diagnostic procedure and techniques use brake pedal feel, warning indicator illu mination and low brake fluid level as
indicators to diagnosing brake system co ncerns. The following conditions are cons idered abnormal and indicate that the
brake master cylinder is in need of repair:
Brake ped a
l goes down fast. Th
is could be caused by an ex ternal or internal leak.
Brake pedal goes down slowly
. This could be
caused by an internal or external leak.
Brak
e pedal is low or feels spongy. This condition may be ca
used by no fluid in the brake master cylinder, reservoir