1998 JAGUAR X308 radiator

Engine Cooling - Thermostat Housing Cover4.
0L SC V8 - AJ26
Re
moval and Installation
Remov

al
Installation

1.
O
pen the engine compartment and fit paintwork protection
sheets.
2. Drain the radiator. Refer to Ge neral Procedures. Retain the
coolant drain tray in position to catch any spillage when
removing the outlet pipe.

3. Di
sconnect the bottom hose
from the coolant outlet pipe.
1. Release and reposi tion the hose clip.
2. Disconnect the bottom hose.

4. R
emove the thermostat from the outlet pipe.
1. Remove the three bolts which secure the thermostat cover to the outlet pipe.
2. Remove the thermostat cover, the thermostat and
the seal from the outlet pipe. Discard the seal.
1. Installation is th e reverse of the re moval procedure.
Use new
sealing rings on th
e coolant outlet pipe and
thermostat housing.
The t
hermostat ball valve must
locate in the recess in the
cover.
2. Tighten the thermostat cover bolts to 8-10 Nm.
3. Refill the cooling system as de scribed in General Procedures.

Engine Cooli
ng - Thermostat Housing
Cover Seal4.0L NA V8 - AJ27/3.2L
NA V8 - AJ26
Re mo
val and Installation
Remova

l
Installation
1. Op
en the engine compartment and fit paintwork protection
sheets.
2. Drain the radiator. Refer to Ge neral Procedures. Retain the
coolant drain tray in position to catch any spillage when
removing the thermostat cover.
3. Remove the engine cove r panels for access.

4. Disc
onnect the radiator bott
om hose from the thermostat
cover.
1. Release and reposition th e hose clip, and disconnect
the bottom hose from th e thermostat cover.

5. Re
move the thermostat cover.
1. Remove the three bolts which secure the thermostat cover to the housing.
2. Remove the thermostat cover from the housing.

6. Re
move the thermostat from the housing.
1. Remove the thermostat from the housing.
2. Remove (and discard) th e seal from the thermostat.
Fit a new seal to the
thermostat. Th
e seal may be fitted
either way round.
1. Installation is th e reverse of the re moval procedure.
2. Fit the thermostat so that the vent ball valve locates in the
recess in the cover.
3. Tighten the thermostat cover bolts to 8-10 Nm.

Engine Cooli
ng - Thermostat Housin
g Cover Seal4.0L SC V8 - AJ26
Remo
val and Installation
Remov
a
l
Installation

1.
Op
en the engine compartment and fit paintwork protection
sheets.
2. Drain the radiator. Refer to Ge neral Procedures. Retain the
coolant drain tray in position to catch any spillage when
removing the outlet pipe.

3. Disc
onnect the bottom hose
from the coolant outlet pipe.
1. Release and reposi tion the hose clip.
2. Disconnect the bottom hose.

4. Re
move the thermostat from the outlet pipe.
1. Remove the three bolts which secure the thermostat cover to the outlet pipe.
2. Remove the thermostat cover, the thermostat and
the seal from the outlet pipe. Discard the seal.
1. Installation is th e reverse of the re moval procedure.
Use new seali
ng rings on th
e coolant outlet pipe and
thermostat housing.
The t he
rmostat ball valve must
locate in the recess in the
cover.
2. Tighten the thermostat cover bolts to 8-10 Nm.
3. Refill the cooling system as de scribed in General Procedures.

Fuel Char
ging and Controls - Fu
el Injectors4.0L SC V8 - AJ26
Remo
val and Installation
Remov
a
l
Installation
1. Disc onne
ct battery ground cable (IMPORTANT, see SRO
86.15.19 for further information).
2. WARNING: BEFORE PROCEEDING, IT IS ESSENTIAL THAT
THE WARNING NOTES GIVEN IN SECTION 100-00 (UNDER THE
HEADING 'SAFETY PRECAUTIONS') ARE READ AND
UNDERSTOOD.
Depressurize fuel syst em; refer to 19.50.02.
3. Drain radiator coolant; refer to 2
6.10.01.
4. Remove air cleaner cover / inta ke assembly; refer 19.10.30.
5. Remove throttle body; refer to 19.70.04.
6. Remove throttle induction elbo w; refer to (SC) 19.70.28.
7. Remove exhaust gas re-circulation valve (EGR) if fitted; refer
to 17.45.01.
8. Remove supercharger outlet duct and gasket; refer to
18.50.16.
9. Remove coolant outlet pipe; refer to (SC) 26.31.08 .
10. Remove supercharger drive belt; refer to 18.50.08.
11. Remove supercharger assembly; refer to 18.50.15.
12. Remove bank 1 or 2 charge air cooler as required; refer to
18.50.18 and / or 18.50.19.

13 . Di
sconnect fuel injector harness.
1. Disconnect injector connectors.
2. Loosen two nuts which se cure harness to camshaft
cover.
3. Reposition harness to al low access to injectors.

14. CAUTI
ON: Take care to avoi
d dropping any objects or
foreign matter into induction ma nifold with the fuel injectors
removed.
Remove fuel injector(s). 1. Prise out injector retaining clip, ensuring that it is not
ejected and lost. Note orientation of the clip.
2. Using a suitable implemen t, carefully lever injector
from fuel rail.
3. Discard injector O-rings.
15 . Cle
an all mating faces.

is at
tached to the three mounting bosses between the V of the cylinder block
has a fil

led for life inte
rnal lubrication system
is po
sitively aligned with the drive
belt by a doweled mounting bracket
C
harge Air Cooler System
Each cyl
inder bank is fitted with a charge air cooler unit wh
ich supplies pressurized air to the four cylinders via an adaptor
block. The inlet ports to the tw o charge air coolers are connected to the supercharger outlet by an inle t assembly consisting
of rubber ducts and clamp plates . An outlet stub at the rear of each charge air cooler unit provides the connection for the
by-pass valve airflow. The charge air coolers ar e water cooled via a radiator and coolant pump.
Charge Air Cooler Coolant System

Parts List
Each charge air cooler unit is a fin and tube air to liquid heat exchanger. The coolant circuit for the charge air coolers
consists of a pump, ra diator, connecting hoses and a bleed pipe.


It
em
Par
t Number
De
scription
1—Charge air cool

ers

2—Coo
lant hoses
3—Coo

lant pump
4—Radi

ator
5—Ble

ed pipe to main coolant circuit expansion tank
6—Charge air cooler to en

gine
coolant circuit connection
7—Coo
lant top up plug
Supercharger
The supe
rcharger:

Intake Air Distribution and Filtering - Charge Air Cooler LH
Remo
val and Installation
Remov
a
l
Installation
1. Disc onne
ct battery ground cable (IMPORTANT, see SRO
86.15.19 for further information).
2. Drain radiator coolant; refer to 26.10.01.
3. Remove air cleaner cover / intake assembly; refer to 19.10.30.
4. Remove throttle body; refer to 19.70.04.
5. Remove exhaust gas re-circulation valve (EGR) if installed;
refer to 17.45.01.
6. Remove throttle intake elbo w; refer to (SC) 19.70.28.
7. Remove supercharger outlet duct; refer to 18.50.16.
8. Remove coolant outlet pipe; refe r to operation (SC) 26.31.08.
9. Remove supercharger drive belt; refer to 18.50.08.
10. Remove supercharger; refer to operation 18.50.15.
11. Detach engine harness retaining clip from rear of charge air
cooler.

12. Di
sconnect hoses from charge air cooler.
Pla

ce absorbent cloth in appropriate position.
Di
sc
onnect hoses.

13 .
CAUTI
ON: Take care to avoi
d dropping any objects or
foreign matter into engine inle t duct with charge air cooler
removed.
Remove charge air cooler from the engine.
1. Remove eight bolts.
Remove charge air cooler.
2
. Discard gasket.
Cle
a
n all mating faces.
1.
Install ch
arge air
cooler to adaptor.
1. Install new gasket.
2. Install charge air cooler.

Intake Air Distribution and Filtering - Charge Air Cooler RH
Remo
val and Installation
Remov
a
l
Installation
1. Disc onne
ct battery ground cable (IMPORTANT, see SRO
86.15.19 for further information).
2. Drain radiator coolant; refer to 26.10.01.
3. Remove air cleaner cover / intake assembly; refer to 19.10.30.
4. Remove throttle body; refer to 19.70.04.
5. Remove exhaust gas re-circulation valve (EGR) if installed;
refer to 17.45.01.
6. Remove throttle intake elbo w; refer to (SC) 19.70.28.
7. Remove supercharger outlet duct; refer to 18.50.16.
8. Remove coolant outlet pipe; refe r to operation (SC) 26.31.08.
9. Remove supercharger drive belt; refer to 18.50.08.
10. Remove supercharger; refer to operation 18.50.15.
11. Remove intake air temperatur e sensor 2 from charge air
cooler; refer to 18.30.52.
12. Detach engine harness retaining clip from rear of charge air
cooler.

13. Di
sconnect hoses from charge air cooler.
Pla

ce absorbent cloth in appropriate position.
Di
sc
onnect hoses.

14 . CAUTI
ON: Take care to avoi
d dropping any objects or
foreign matter into engine inle t duct with charge air cooler
removed.
Remove charge air cooler from the engine. 1. Remove eight bolts.
Remove charge air cooler.
2
. Discard gasket.
Cle
a
n all mating faces.
1.
Install ch arge air
cooler to adaptor.
1. Install new gasket.
2. Install charge air cooler.

Intake Air Distribution and Filtering - Charge Air Cooler Radiator
Remo
val and Installation
Remov
a
l
1.
Op
en the engine compartment and fit paintwork protection
sheets.
2. Disconnect the battery.
1. Remove the battery cover.
2. Disconnect the battery ground cable.
3. Remove the engine radiator and air conditioning condensor
assembly. Refer to operation 26.40.01.
4. Remove the grill assembly fo r access. Refer to operation
76.55.15.

5. Drain th e charge air cooler radiator.
Reach t
hrough the front bumper
splitter vane to remove
the radiator drain plug.

6. Disc
onnect the radiator
hoses from the radiator.
1. Disconnect the coolant pump to radiator hose.
2. Disconnect the return hose.
3. Disconnect the bleed pipe.

7. Re
move the two radiator fixing bolts.
8. Displace and re-position the am bient air temperature sensor
and bracket.