engine JAGUAR X308 1998 2.G Workshop Manual

Engine Cooling - Coolant Expansi
on Tank
Re
moval and Installation
Remov

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

2. R
emove the centre trim panel
from the engine compartment.
1. Remove the left hand side enclosure panel.
2. Remove the centre trim panel.
3. Ensure that the cooling system is cool and very carefully,
remove the pressure cap.
4. Place a cloth under the expansion tank to absorb any spillage
caused by disconnecting the hoses.

5. R
elease the hoses (Quick Fit connections) from the expansion
tank.
1. Release the hose, expansion tank to thermostat housing (coolant outlet pipe on supercharged
engines).
2. Release the hose, expansion tank to recovery tank.
3. Release the hose, expansion tank to radiator..
6. Fit blanking plugs to the pipes and the tank.

7. Re
move the expansion tank from the mounting.
1. Disconnect the coolant level sensor connector.
2. Remove the nuts which secures the tank.
8. Remove the expansion tank from the vehicle.
1. Use a pipe clamp to clam p the bottom hose branch.
2. Release the pipe clip an d move it along the pipe.
3. Disconnect the tank from the bottom hose and

In
stallation



re
move it from the vehicle.
9. Empty any surplus coolant from the expansion tank into a
drain tray.
10. Remove the cloth from the engine and clean any spillage from
the engine bay.

11 . R
emove the coolant level sensor
by carefully levering it
downwards at one side.
1. Installation is th e reverse of the re moval procedure.

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 - Cooling Fan Motor
Remo
val and Installation
Remov
a
l
Installation

1.
Re
move the Twin Fan and Motor Assembly (26.25.12)
described in this section.

2. Re
move the fan and motor unit from the twin fan and motor
assembly.
1. Remove the three nuts which secure the fan and motor unit.
2. Remove the fan and motor unit.

3. Re
move the fan rubber mountings.
1. Remove the spacer from each rubber mounting.
2. Remove the three rubber mountings.
1. Installation is th e reverse of the re moval procedure.

Engine Cooling - Cooling Fan Motor and Shroud
Re
moval and Installation
Remov

al
Installation


1.
Di
sconnect the batt
ery ground cable.
R
emove the battery cover.
2. Open the engine compartment and fit paintwork protection
sheets.

3. Disc
onnect the harness multip
lug from each cooling fan.
Cut an
d remove the ratchet st
rap which secures each fan
harness to the fan moto r lower support leg.
1. Disconnect the mult iplug from each fan.
Di
sconnect each harness
from the clip on the fan
mounting frame and repo sition the harness.

4. R
emove the two bolts which
secure the fan and motor
assembly to the radiator.
5. Carefully remove the fan and mo tor assembly from the vehicle.

6. Re
move the mounting grommets
and spacer tubes from the
assembly.
1. Installation is the reverse of the remova l procedure. Ensure
that the fan and motor assembly locate into the lower
mountings.
2. Connect the battery and fit the battery cover. Reset the clock
and the radio.

Engine Cooling - Cooling Fan Motors
Remo
val and Installation
Remov
a
l
Installation

1.
Re
move the Twin Fan and Motor Assembly (26.25.12)
described in this section. Do not remove the harness and pipe
securing clips from the assembly.

2. Re
move the fan and motor units from the twin fan and motor
assembly.
1. Remove the three nuts which secure the fan and motor unit.
2. Remove the fan and motor unit.
Re
peat the above two operations for the second fan.

3. Re
move the fan rubber mountings.
1. Remove the spacer from each rubber mounting.
2. Remove the rubber mountings; three for each fan unit.
1. Installation is th e reverse of the re moval procedure.

Engine Cooling - Cooling Fan Shroud
Re
moval and Installation
Remov

al
Installation

1.
R
emove the Twin Fan and Motor Assembly (26.25.12) from the
radiator.
2. With twin fan and motor assembly on the bench, remove both
fan and motor units (26.25.25).

3. R
emove the components from the mounting frame.
1. Remove the harness an d pipe securing clips.
2. Remove the rubber vent flaps.
1. Installation is th e reverse of the re moval procedure.

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.