1998 JAGUAR X308 pulley

            303‐01:  En gine  
                 Diagnos
is
 and  Testing  
                     Engine 
                     DTC P1392  VVT  solenoid  A circuit  low  input  
                     DTC P1397  VVT  solenoid  B circuit  low  input  
                     DTC P1393  VVT  solenoid  A circuit  high  input  
                     DTC P1398  VVT  solenoid  B circuit  high  input  
                     DTC P1396  VVT  solenoid  B malfunction  
                     Pinpoint test  A: P13
92 (P1397)  VVT  solenoid  circuit low  input  
                     Pinpoint test  B: P1393  (P1398)  VVT  solenoid  circuit high  input  
                     Pinpoint test  C: P1396  VVT  solenoid  malfunction  
                 In
‐Vehicle  Repair  
                     Connecting 
Rod Bearings  (12.17.16)  
                     Crankshaft 
Front Seal  Vehicles  Without:  Supe
rcharger  (12.21.14)  
                     Crankshaft 
Front Seal  Vehicles  With:  Supercharger  (12.21.14)  
                     Crankshaft 
Inner Sprocket  4.0L, Vehicles  Without:  Supercharger  (12.65.76) 
                     Crankshaft 
Inner Sprocket  3.2L (12.65.76)  
                     Crankshaft 
Outer Sprocket  (12.65.75)  
                     Crankshaft 
Pulley Vehicles  Without:  Supercharger  (12.21.09)  
                     Crankshaft 
Pulley Vehicles  With:  Supercharger  (12.21.09) 
                     Crankshaft 
Rear Seal  Vehicles  Without:  Supercharger  (12.21.20) 
                     Crankshaft 
Rear Seal  Vehic
les With:  Supercharger  (12.21.20)  
                     Cylinder 
Head LH  (12.29.02)  
                     Cylinder 
Head RH  (12.29.03)  
                     Engine
 Front  Cover  (12.65.01)  
                     Engine
 Front  Cover  Gasket  (12.65.04)  
                     Exhaust
 Camshaft  LH  (12.13.17)  
                     Exhaust
 Camshaft  RH  (12.13.15)  
                     Exhaust
 Camshaft  Sprocket  LH  4.0L,  Vehicles  Without:  Supercharger  (12.65.74) 
                     Exhaust
 Camshaft  Sprocket  LH  3.2L/4.0L,  Vehicles  With: Supercharger  (12.65.74)  
                     Exhaust
 Camshaft  Sprocket  RH  4.0L,  Ve
hicles  Without:  Supercharger  (12.65.73)  
                     Exhaust
 Camshaft  Sprocket  RH  3.2L/4.0L,  Vehicles With:  Supercharger  (12.65.73)  
                     Exhaust
 Manifold  LH  (30.15.55)  
Exhaust Manifold  RH  (30.15.56)  
Exhaust  Manifold  LH  and  RH  (30.15.57)  
Exhaust  Manifold  Gasket  LH  (30.15.58)  
Exhaust  Manifold  Gasket  RH  (30.15.59)  
Exhaust  Manifold  Gasket  LH  and  RH  (30.15.60)  

                    Coolant E x
pansion
 Tank  (26.15.01)  
                    
Coolant Outlet  Pipe  (26.31.08)  
                    
                     Cooling Fan  Motor  (26.25.24)  
                     Cooling Fan  Motor  and  Shroud  (26.25.25)  
                     Cooling Fan  Motors  (26.25.25)  
                     Cooling Fan  Shroud  (26.25.30)  
                     Engine Coolant  Level  Switch  (26.40.11)  
                     Radiator (26.40.01)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA V8  ‐ AJ27  
                     Radiator (26.40.01)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Radiator Lower Hose  (26.30.07)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Radiator Lower Hose  (26.30.07)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Radiator Upper Ho
se (26.30.01)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Radiator Upper Hose  (26.30.01)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Thermostat  (26.45.07)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Thermostat  (26.45.07)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Thermostat  Housing  Cover  (26.
45.22)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Thermostat  Housing  Cover  (26.45.22)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Thermostat  Housing  Cover  Seal  (26.45.20)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA V8  ‐ AJ27  
                     Thermostat  Housing  Cover  Seal  (26.45.20)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Water Pump  (26.50.
01) ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA V8  ‐ AJ27  
                     Water Pump  (26.50.01)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Water Pump  Pulley  (26.50.05)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Water Pump  Pulley  (26.50.05)  ‐ 4.0L  SC  V8 ‐ AJ26  
 
             303‐03B : Supercharger  Cooling 
                 Removal and  Installation  
                     Water Pump  
 
             303‐04:  Fu
el Charging  and Controls  
                 Diagnosis  and  Testing  
                     Fuel Charging  and Controls  
                 Inspection  and Verification  
                     Driver Information  Chart  
                     Default mode Definitions  
                     Diagnostic Trouble  Code  (DTC)  index  
                     Pinpoint Tests  

                Removal and  Installation  
                     Fuel Injection  Supply  Manifo ld LH
 
(19.60.05)  
                     Fuel Injection  Supply  Manifold  RH  (19.60.04)  
                     Fuel Injection  Supply  Manifold  Pipe  (19.41.04)  
                     Fuel Injector  Vehicles  Without:  Supercharger  (18.10.01)  
                     Fuel Injector  Vehicles  With: Supercharger  (18.10.01) 
                     Fuel Injectors  Vehicles  With:  Supercharger  (18.10.02) 
                     Throttle Body  (19.70.04)  
                     Throttle Body  Gasket  (19.70.07)  
 
             303‐05:  Accessory  Drive  
                 Descriptio
n and  Operation  
                     Accessory Drive  
                 Removal and  Installation  
                     Accessory Drive  Belt (12.10.40)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Accessory Drive  Belt (12.10.40)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Accessory Drive  Belt Idler  Pulley  (12.10.43)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Accessory Drive  Belt  Idler  Pulle
y (12.10.43)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Accessory Drive  Belt Tensioner  (12.10.41)  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA  V8  ‐ AJ27  
                     Accessory Drive  Belt Tensioner  (12.10.41)  ‐ 4.0L  SC  V8 ‐ AJ26  
                     Supercharger  Belt  (18.50.08)  
                     Supercharger  Belt  Idler  Pulley  (18.50.09)  
                     Supercharger  Belt  Tensioner  (18.50.24)  
 
             303‐06:  Starting  System  
                 Description  and  Operati
on 
                     Starting System  
                 Diagnosis  and  Testing  
                     Starting System  
                 Inspection  and Verification  
                     Diagnostic Trouble  Code  (DTC)  Index  
                     Pinpoint Tests  
                 Removal and  Installation  
                     Starter Motor  (86.60.01)  
 
  

Vibrati
on
Power steeri
ng
pump noisy
Low power steer i
ng fluid.
CHECK
steering system for s
igns of steering fluid
loss.
BLEE D the
power steering system. For additional
information,
REFER to Section 211
-0 0
Steering System
-
Ge n
eral
Informati
o
n
.
Power steeri
ng pump wor
n or

otherwise defective.
CHECK for leaks. R
EPAIR as necessary.
CHECK

the power steering pressure. For additional
information, REFER to th e Power Steering Pressure
Test in this section.
INST ALL a ne
w power steering pump as necessary.
For additional information,
REFER to Section 211
-0 2
Power Steering
.
Wh
in
e type noise

Aerated flui
d.
BLEE
D the
power steering system. For additional
information,
REFER to Power Steering System Bleeding
- in t h
is
section.
Power steering pump.
CHECK for leaks. R
EPAIR as necessary.
INSTALL a ne

w power steering pump as necessary.
For additional information,
REFER to Section 211
-0 2
Power Steering
.
No
i
se during
steering gear movement
Low power steer i
ng fluid.
CHECK
steering system for s
igns of steering fluid
loss.
BLEE D the
power steering system. For additional
information,
REFER to Section 211
-0 0
Steering System
-
Ge n
eral
Informati
o
n
.
Water co
n
tamination to the
power steering fluid.
DR AIN
the power steering system.
BLEE
D the
power steering system. For additional
information,
REFER to Section 211
-00
Steering System
-
Gen
eral
Informati
o
n
.
Cavi
tation due to restricted
po
wer steering feed hose.
CHECK

and reposition power
steering feed hoses and
INSTALL new hoses as necessary.
Continu o
us noise

Low power steer i
ng fluid.
CHECK
steering system for s
igns of steering fluid
loss.
BLEE D the
power steering system. For additional
information,
REFER to Section 211
-0 0
Steering System
-
Ge n
eral
Informati
o
n
.
Power steeri
ng pump dri
ve
loose.
CHECK
power steering coupli
ng and power steering
pump.
IN ST
ALL a new power steering coupling or power
steering pump as nece ssary. For additional
information,
REFER to Section 211
-0 2
Power Steering
.
Incorre
ct
accessory drive belt
tension or accessory drive belt glazed.
CHECK acc
essory drive belt condition and INSTALL a
new accessory drive belt as necessary. For additional
information,
REFER to Section 303
-0 5 Ac
cessory Drive
.
Power steeri
ng pump dri
ve
pulley loose.
CHECK
and TIGHTEN the power steering pump drive
pulley retaining bolts as necessary. For additional
information, REFER to Section 303
-03A En
gine
Coo
ling / 30 3-03
B Supercharger Cooling
.
Power steeri
ng pump
r
etaining bolts loose.
CHECK

the power steering pump retaining bolts and
TIGHTEN as necessary.
Power steering hose/pipe in c
ontact with the vehicles
body.
CHECK
and reposition powe
r steering hoses/pipes,
INSTALL new hoses/pipes as necessary.
Power steeri ng hose
r
estricted/twisted.
CHECK

and reposition powe
r steering hose, replace
hose as necessary.
Conditi
on
Possibl
e Sources
Actio
n
Loose/worn tie-
ro
ds.
INST
ALL a new tie-r
od end. For additional
information,

High
-pitched sound like rubbing a clean window.
Squea

l
Continu
ous, high-pitched sound like runn
ing finger nails across a chalkboard.
Tap
Ligh
t, hammering sound like tapping pencil on edge
of table. May be rhythmic or intermittent.
Weep
Continu
ous mid-range sound (lower frequency
than squeal, higher frequency than groan).
Whir/
Whine
High
-pitched buzzing sound, like
an electric motor or drill.
Whistle

Sharp, shril
l sound, like wi
nd passing a small opening.
Description of Specific St eer
ing System Noise Types
Bel
t Squeal
Belt squea
l is a high frequency air-born
e noise generated by slippage of the ribbe d Vee belt on the power steering pump
pulley. Squeal increases with system loading and at the end of lock.
Clonk

Cl
onk is a structure-borne nois
e heard as a loose-sounding rattle or vibration coming from the steering column. Clonk can
be identified by driving and turning over cobblestones, rough roads, or high frequency bumps such as 25-50 mm tall tar
strips. Clonk requires a tie-rod load impact.
Column Knoc
k
Col
umn knock is a loose-sounding rattle or
vibration generated by the steering column shaft contacting other portions of the
column assembly. The noise is both audible and tactile. Column knock is generate d by driving over cobblestones or rough
pavement. It is not necessary to turn the steering wheel to create this noise.
Column Ra
ttle
Co
lumn rattle is a metallic sounding no
ise created when applying a highly impuls ive force to the steering wheel. Column
rattle is often used to combine the more general group of column noises includin g clonk and column knock. Column rattle
noises can be caused by clonk, knock, l oose column components, bonus parts etc. A series of parked, straight-line driving,
and cornering test should be carried out to isolate the source/sources.
Gr
inding/Scrape
Gr

inding is a low frequency noise in the column when the st
eering wheel is turned. Is generally caused by interference
between moving components such as the st eering wheel to steering column shroud.
Gr
unt (Squawk)
Grunt

is a "honking" sound elicited when coming off one of
the steering stops. Grunt is generally excited during parking
manoeuvres with a low to me dium speed steering input.


Squea
k

diverter val
ve (if fitted) and oil filter.
Main
bearings
which are grooved in the upper positions and plain in
the lower positions. They are manufactured from
aluminium / tin material.
A c
rankshaft with under
cuts and rolled fillets for extra strength.
Fracture
-split connecting rods in sintered-forged steel.
Brackets
bolted to the front of
the cylinder
block are used to mo unt all accessories.
A sin
gle, seven ribbed vee belt
drives the accessories.
An au
tomatic belt tensioner for the front accessory drive,
incorporating a wear indicator.
An advanced en
gine management system inco
rporating electronic throttle control.
The un
it meets the requirements of the CARB OBDII USA legislation.
Ancillary Systems
The an
ci
llary systems, driven by the engine, each have a
detailed Description and Operation along with Diagnostic
Procedures, and Removal and Installation instructions ; refer to the following sections of this manual:
Power Steeri
ng Pump - Section 211-02
Ai
r Conditioning Compressor - Sectio
n 412-03
Engine
C
ooling Pump - Section 303-03
Generator
- Sectio
n 414-02
The drive belt, idler pulley and automatic tensioner are described in Section 303-05.
The engine starting system is described in Section 303-06.
En
gine Management and Emission Control System
Engine Control Modu
le (ECM)
Engine
management and exhaust emissions are controlled by the ECM, which has the
following main functions:
Fu
el injection
Idle
s
peed
Ignition Ev

aporative loss system
Engine
cooling fans Clim
ate control compressor clutch demand
The microprocessor within the ECM receiv es signals from various sensors and other modules and uses a pre-determined
program to compute engine management functions.
Adaptive functions are incorporated in the ECM to cater for co ntinuous adjustments to its computations to suit prevailing
conditions. Because the system also controls emissions to suit all modes, neither CO levels nor idle speed require service
attention or adjustment, except if an error should occur.
On Board Diagnostics are controlled by the ECM with the continuous monitoring of incoming signals and the subsequent
verification against what the module expects to 'see'. Should a si gnal be incorrect or missing, the ECM will substitute a fixed
value to provide the 'limp home mode' and alert the driver of the problem. Fixed values may be adopted for:
Transmission oil
temperature
Mechanica
l
guar
d position
Throttle blade angle Camshaft position

Inta
k
e air temperature
Diagnostic trouble codes (DTC), including OBD II codes, are stored in the ECM memo ry and can be read by an appropriate
retrieval tool.
Should either the ECM or TCM fa il, ensure that the control housing cooling fan is operating correctly. Failure of the cooling
fan MUST be rectified before renewing a control module and details of a fa n failure should accompany a returned control
module.

Engi
ne -
Torqu
e Specifications


De
s
cription
Nmlb
-
ft
lb
-
in
A
ccessory
drive belt tensioner
43--
A
ccessory
drive belt idler pulley
61--
Air in
ta
ke tube to throttle body
5--
A/C
pipes t
o receiver / drier
9--
A/C pipe m

anifold joints
9--
Camsh

aft bearin
g caps10--
Ca
msh
aft cove
r10--
Ch
arge Air Co
oler Adaptor to cylinder head (SC)
21--
Co
olan
t outlet pipe (AJ26 NA)
10--
Cran
kshaft damper bolt - no lockin
g ring
St
ag
e 1
80--
Stag

e 2
80°--
C
r
ankshaft damper bolt - with locking ring
37
5--
Cra
nkshaft position sensor
10--
Cy
li
nder head bolts M10
35--
Cy
lin
der head bolts M8 (two at front of head)
25--
Driv
es
haft (propshaft) drive flan
ge bo
l
ts
82--
ERG p
i
pe to exhaust manifold
21--
Engi

ne compartment cover (bonnet) hinges
25--
En
gine
coolant radiator top securing panel
25--
E
ng
ine front mounting
70--
En
gine
oil cooler pipes (clamp)
21--
En
gi
ne / Transmission assembly rear mounting centre bolt
35--
En
gi
ne / Transmission assembly rear mounting outer bolts
25--
Ex
ha
ust downpipe support bracket to flywheel housing
50--
Ex
ha
ust downpipe to lower mounting bracket
48--
E
x
haust camshaft sprocket
St
age 120--
Stage 290 °--
Ex
haust manifold to cylinder head
18--
Ex
ha
ust manifold flange to downpipe
18--
E
x
haust Torca clamps
55--
Fuel cross-over elbo

w
10--
Fu
el f
eed pipe to intake manifold
10--
Fuel
Injector (AJ
26)
5--
Fuel
injector ha
rness clips to camshaft cover (SC)
5--
Fu
el p
ressure re
gu
l
ator to intake manifold
10--
F
u
el rail to Char
ge
A
ir Cooler Adaptor (SC)
21--
In
ta
ke manifold to cylinder heads
21--
Inta

ke elbow support brackets
18--
Oil f
i
lter
17--
Oil C
o
oler
7--
P
AS pu
mp hose unions
25--
P
r
imary timing chain fixed guide
12--
P
r
imary timing chain tensioner
12--
Pr

imary timing chain tensioner blade
14--
S
e
condary timing chain tensioner to cylinder
12--
S
t
eerin
g ra
ck45--
Thro
ttle body to intake elbow
21--
Th
ro
ttle cable abutment to throttle body
5--
Th
ro
ttle intake elbow to intake manifold
21--
Ti
mi
ng cover
12--
Variable camshaft t
i
ming oil control unit to intake camshaft
St
ag
e 1
20--
St
ag
e 2
90
°--
Var
iable camshaft timing oil control unit housing (bolt and nut)
21--
Va
ria
ble camshaft timi
ng oil control solenoid
12--
Wa
ter pump pulley
12--

22
.
Remove the chain from the VVT unit and from the crankshaft
pulley.

23
.
Remove the camshaft locking tool 303 - 530 and transfer it to
the B-Bank camshafts, aligning the shafts slightly as necessary.


24
.
Loosen the bolt which secures the sprocket to the camshaft.

25
.
Loosen the bolt which secures the VVT unit to the camshaft.
26. Remove the primary ch ain tensioner bolts.