1998 JAGUAR X308 cooling system

Engine Cooling - Coolant Outlet Pipe

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 hoses and multi-plug from the coolant outlet
pipe.
1. Release and reposition th e hose clip, and disconnect
the top hose.
2. Release and reposition th e hose clip, and disconnect
the heater hose.
3. Disconnect the multi-plug from the temperature sensor and unscrew the sens or from the outlet pipe.
4. Release and reposition the hose clip along the bypass
hose.

4. R
emove the coolant outlet pipe.
1. Remove the four bolts which secure the outlet pipe.
2. Remove the outlet pipe from the bypass hose and
from the cylinder heads.
5. Remove and discard the sealing rings from the outlet pipe
grooves.
1. Installation is the reverse of the remova l procedure. Use new
sealing rings on the coolant outlet pipe.
2. Tighten the coolant outlet pipe bolts to 10-14 Nm If replacing
the coolant temperature sensor, tighten to 15-19 Nm.
3. Refill the cooling system as de scribed in General Procedures.

I
nstallation



8.
Remove an
d discard the sealing
rings from the outlet pipe
grooves.
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 coolant outlet pipe bolts to 8-12 Nm. If replacing
the coolant temperature sensor, tighten to 15-19 Nm.
3. Refill the cooling system as de scribed in General Procedures.

Engine Cooling - Radiator4.0L NA V8 - AJ27/3.2L NA V8 - AJ26
Re
moval and Installation
Remov

al
1.
O
pen the engine compartment and fit paintwork protection
sheets.

2. Di
sconnect the batt
ery ground cable.
R
emove the battery cover.
3. Drain the coolant from the radiator.
4. Depressurise the climate control system. Refer to Section 412-
03 Observe all safety warnings and precautions stated in that
section.
5. Release both gas struts, set the engine compartment cover
fully forward to the service acce ss position and support with a
wooden (or similar) strut - take care not to damage the engine
compartment cover or the radiator grille.
6. Remove the twin fan and motor assembly. Refer to Operation
26.25.12 in this section.

7. D
isconnect the radiator breather hose.
R

elease the Quick-Fit hose (radiator to expansion tank)
and disconnect the hose from the radiator.

8. Di
sconnect the transmission oil cooler lower pipe.
1. Disconnect and reposition the union nut, lower cooler pipe to radiator. Di sconnect the pipe.
2. Remove and discard the O- ring seal from the pipe
and fit blanking plugs to the pipe and to the union on
the radiator.
9. From above the vehicle, disconne ct the transmission oil cooler
upper pipe.

16
.
Refill the cooling system. Refer to the Refill procedure in
General Procedures.
17. Repressurise the climate cont rol system. Refer to Section
412-03 Observe all safety warnin gs and precautions stated in
that section.
18. Close the engine compartment cover.
19. Connect the battery and fit the battery cover. Reset the clock
and the radio.

Engine Cooling - Radiator4.0L SC V8 - AJ26
Remo
val and Installation
Remov
a
l
1.
Op
en the engine compartment and fit paintwork protection
sheets.

2. Disc
onnect the batt
ery ground cable.
Re
move the battery cover.
3. Drain the coolant from the radiator.
4. Depressurise the climate control system. Refer to Section 412-
03 Observe all safety warnings and precautions stated in that
section.
5. Release both gas struts, set the engine compartment cover
fully forward to the service acce ss position and support with a
wooden (or similar) strut - take care not to damage the engine
compartment cover or the radiator grille.
6. Remove the twin fan and motor assembly. Refer to Operation
26.25.12 in this section.

7. Di
sconnect the radiator breather hose.
R
e
lease the Quick-Fit hose (radiator to expansion tank)
and disconnect the hose from the radiator.

8. Disc
onnect the transmission oil cooler lower pipe.
1. Disconnect and reposition the union nut, lower cooler pipe to radiator. Di sconnect the pipe.
2. Remove and discard the O- ring seal from the pipe
and fit blanking plugs to the pipe and to the union on
the radiator.
9. From above the vehicle, disconne ct the transmission oil cooler
upper pipe.

16
. Re
fill the cooling system. Refer to the Refill procedure in
General Procedures.
17. Repressurise the climate cont rol system. Refer to Section
412-03 Observe all safety warnin gs and precautions stated in
that section.
18. Close the engine compartment cover.
19. Connect the battery and fit the battery cover. Reset the clock
and the radio.

Engine Cooling - Radiator Lo
wer Hose4.0L NA V8
- AJ27/3.2L NA 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 thermostat cover.

3. Di
sconnect the radiator bott
om hose from the thermostat
cover.
1. Release and reposition th e hose clip, and disconnect
the bottom hose.

4. D
isconnect the bottom hose from the radiator.
1. Slacken the hose retaining clip and reposition the clip
along the hose.
2. Disconnect the hose from the radiator.
5. Remove the spring band clips from the hose.
1. Installation is th e reverse of the re moval procedure.
2. Refill the cooling system as de scribed in General Procedures.

I
nstallation



Re
move the hose assembly.
7. Remove the spring band clips from the hose.
1. Installation is th e reverse of the re moval procedure.
2. Refill the cooling system as de scribed in General Procedures.