1998 JAGUAR X308 engine coolant

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.

Engine Cooling - Coolant Outlet Pipe
Remo
val and Installation
Remov
a
l
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 onne
ct the top hose and br
eather pipe from the coolant
outlet pipe.
1. Release and reposition th e hose clip, and disconnect
the top hose.
2. Release and disconnect the breather pipe quick fit connector.
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. Disc
onnect the bottom hose
from the thermostat housing.
1. Release and reposition th e hose clip along the hose.
2. Disconnect the bottom hose.

5. Disc
onnect the coolant outlet pipe from the cylinder heads.
1. Remove the four bolts which secure the outlet pipe.
2. Remove the outlet pipe from the bypass hose and
from the cylinder heads (still connected to the
heater hose).
6. Release and reposition the clip which secures the heater hose
to the outlet pipe and disconnect the hose. Remove the outlet
pipe.
7. Remove 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.

Engine Cooling - Engine Coolant Level Switch
Remo
val and Installation
Remov
a
l
Installation

1.
Op
en the engine compartment and fit paintwork protection
sheets.
2. Remove the expansion tank; refe r to Operation (26.15.01.) in
this section.

3. Re
move the coolant level probe.
1. Use a lever to release the probe from the expansion tank and remove it.
4. Clean the expansion tank probe aperture.
1. Installation is th e reverse of the re moval procedure.

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.

10. F
it the radiator top securing panel.
1. Position and align th e top securing panel.
2. Fit the eight securing bolts to the panel.

11. Tigh
ten the ten bolts which secu
re the radiator top panel.

12. Connect
the radiator coolant bottom hose.
1. Reposition and connect the bottom hose to the radiator.
2. Reposition the hose clip.
13. Fit the twin fan and motor assembly. Refer to Operation
26.25.12 in this section.
14. Remove the temporary wooden support strut and reconnect
the gas struts to the engine compartment cover.
15. Check the level and replenish the transmission fluid as
necessary. Refer to Section 307 for the recommended
procedure.

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.

10
.
Fit the radiator top securing panel.
1. Position and align th e top securing panel.
2. Fit the eight securing bolts to the panel.

11
.
Tighten the ten bolts which secu re the radiator top panel.

12
.
Connect the radiator coolant bottom hose.
1. Reposition and connect the bottom hose to the radiator.
2. Reposition the hose clip.
13. Fit the twin fan and motor assembly. Refer to Operation
26.25.12 in this section.
14. Remove the temporary wooden support strut and reconnect
the gas struts to the engine compartment cover.
15. Check the level and replenish the transmission fluid as
necessary. Refer to Section 307 for the recommended
procedure.

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.