Engine Cooling: Maintenance Jaguar XKR I рестайлинг

Drain Location

A coolant drain plug is located at the rear of the cylinder block behind the starter motor.

Scheme 28

The water pump is fitted between the two cylinder banks, on the front face of the cylinder block.

The pump consists of a housing containing a shaft, with a shrouded plastic impeller on one end and a drive pulley on the other.

A pair of roller bearings support the shaft in the housing. A seal behind the impeller prevents coolant from contaminating the bearings. Should this seal fail, coolant escapes from a witness hole in the housing indicating that immediate action is required.

An O-ring and an aluminum-alloy gasket, seal the ports between the pump and the cylinder banks.

Scheme 29

A coolant outlet plastic pipe connects to the outlet port of each cylinder head to provide a common connection point for the radiator top hose. It also incorporates the engine coolant temperature (ECT) sensor which provides a signal representing coolant temperature at the cylinder heads. Controlling the coolant flow through the radiator, the thermostat starts to open at 80° to 84°C and is fully open at 96°C. The outlet pipe has connections to supply the heater core and the bypass flow to the thermostat housing. An in-groove gasket, seals each of the outlet-to-cylinder head joints. An aluminum gasket seals the ECT sensor to thermostat housing.

Scheme 30

The coolant outlet duct on the supercharged engine performs exactly the same function as on the normally aspirated engine and connects to the same ports on the engine. The main physical difference is that the thermostat housing has been combined with the outlet duct and consequently, there is no separate housing assembly fitted above the water pump, as used on the normally aspirated engine.

A duct in the cylinder block connects the thermostat housing outlet to the water pump inlet. The joint between the thermostat housing and the cylinder block is via an in-groove seal.

Scheme 31

The cooling pack incorporates the radiator assembly with integral transmission oil cooler (located in the radiator outlet tank), an air conditioning condenser, and the twin fan and motor assembly.

The cooling pack on supercharged vehicles is the same as described above, but with the addition of a charge air cooler coolant radiator located in front of the condenser.

Cooling System Draining, Filling and Bleeding - General Procedures

All vehicles

Scheme 32

Scheme 33

1. Release the cooling system pressure. Remove the expansion tank cap.
2. Remove the coolant expansion tank cap.
3. Raise and support the vehicle. Refer to «Jacking and Lifting»(ref-311011) article.
4. Remove the generator lower cooling duct.
5. Drain the coolant Remove the radiator drain plug. Drain the coolant into a suitable container. Clean off any spillages.
6. Install the radiator drain plug when all coolant has drained. Remove the drain tray.
7. Install the generator lower cooling duct.
8. Lower the vehicle.
9. Fill the cooling system up to the MAX mark on the coolant expansion tank using a fifty percent mixture of Jaguar Premium Cooling System Fluid or equivalent, meeting Jaguar specification WSS M97B44-D and fifty percent water.
10. Install the coolant expansion tank pressure cap.

Vehicles with supercharger

1. Remove the supercharger coolant filler plug. Remove and discard the sealing washer.
2. Top up the coolant through the supercharger fill port.
3. Switch ignition on.
4. Allow the supercharger pump to run and top up the coolant through supercharger fill port.
5. Switch the ignition off.
6. Install the supercharger coolant fill plug. Install a new sealing washer. Tighten to 45 Nm. Clean off any spillages.

All vehicles

1. START and RUN the engine.
2. SET the heating system to MAX heat, the blower motor to MAX speed and the air distribution to instrument panel registers.
3. Allow the engine to RUN until hot air is emitted from the instrument panel registers, while observing the engine temperature gauge.
4. Switch off the engine.
5. Allow the engine to cool.
6. Release the cooling system pressure. Remove the coolant expansion tank pressure cap.
7. Fill the cooling system up to the MAX mark on the coolant expansion tank using a fifty percent mixture of Jaguar Premium Cooling System Fluid or equivalent, meeting Jaguar specification WSS M97B44-D and fifty percent water.
8. Install the coolant expansion tank pressure cap.

Cooling System Draining and Vacuum Filling - General Procedures

Note. Vehicles fitted with supercharged engines shown, V8 NA and V6 engines similar.

All vehicles

1. Set the heater controls to maximum HOT.
2. Remove the coolant expansion tank pressure cap.
3. Raise and support the vehicle.
4. Remove the generator lower cooling duct. Remove the screw.
5. Remove the radiator drain plug. Drain the coolant into a suitable container.
6. Allow the coolant to drain.
7. Install the radiator drain plug. Remove the drain tray.
8. Install the generator lower cooling duct.

Vehicles with supercharger

Scheme 34

1. Remove the supercharger radiator drain plug. Drain the coolant into a suitable container.
2. Install the supercharger radiator drain plug.

All vehicles

Scheme 35

Scheme 36

Scheme 37

Scheme 38

1. Lower the vehicle.
2. Install the cooling system vacuum refill adaptor to the expansion tank.
3. Install the vacuum filler gauge to the cooling system vacuum refill adaptor.
4. Install the venturi tube assembly to the vacuum filler gauge.
5. Connect a regulated compressed air supply to the venturi tube assembly.
6. Position the evacuated air hose into a container.
7. Open the air supply valve.
8. Open the coolant supply valve for 2 seconds to prime the coolant supply hose.
9. Apply air pressure progressively until the arrow on the vacuum filler gauge reaches the green segment.
10. Close the air supply valve.
11. Allow one minute to check the vacuum is held. Disconnect the air supply.
12. Open the coolant supply valve and allow the coolant to be drawn into the system.
13. Remove the vacuum filler gauge and cooling system vacuum refill adaptor assembly.
14. Make sure that the coolant level in the expansion tank is at maximum.
15. Install the coolant expansion tank pressure cap.

Vehicles with supercharger

1. Remove the supercharger coolant filler plug. Remove and discard the sealing washer.
2. Top up the coolant through the supercharger fill port.
3. Switch on the ignition.
4. Allow the supercharger pump to run and top up the coolant through the supercharger fill port.
5. Switch the ignition off.
6. Install the supercharger coolant fill plug. Install a new sealing washer. Tighten to 45 Nm. Clean off any spillages.

All vehicles

1. START and RUN the engine.
2. Set the heating system to MAX heat, the blower motor to MAX speed and the air distribution to instrument panel registers.
3. Allow the engine to run until hot air is emitted from the instrument panel registers.
4. Switch off the engine.
5. Allow the engine to cool.
6. Remove the coolant expansion tank pressure cap.
7. Check and top-up the coolant if required.
8. Install the coolant expansion tank pressure cap.

Cooling System Flushing - General Procedures

All vehicles

1. Remove the thermostat. Refer to «Thermostat - Removal and Installation (Vehicles Without: Supercharger)»(ref-311046-S42834554692009032300000) or «Thermostat - Removal and Installation (Vehicles With: Supercharger)»(ref-311046-S24329315172009032300000) .

Vehicles without supercharger

1. Remove the radiator hose.

Vehicles with supercharger

1. Remove the radiator hose.

All vehicles

1. Detach the radiator hose. NOTE: To remove rust, sludge and other foreign material from the cooling system, use Premium Cooling System flush, meeting Jaguar specification EGR-M14P7-A, which is safe for use with aluminum cooling systems. This cleaning restores cooling system efficiency and helps prevent overheating. NOTE: In severe cases where cleaning solvents will not properly clean the cooling system, it will be necessary to use the pressure flushing method using Cooling System Flusher, 164-R3670 to restore efficient operation. NOTE: A pulsating or reversed direction of flushing water will loosen sediment more quickly than a steady flow in the normal coolant flow direction. NOTE: Dispose of old coolant and flushing water contaminated with coolant and cleaning chemicals in accordance with local, state and federal laws.
2. Connect a hose pipe to the radiator upper coolant hose connection using a suitable connector.
3. Flush the radiator using the hose pipe until the coolant flowing from the radiator lower coolant hose connection is clear.
4. Remove the hose pipe from the radiator upper coolant hose connection.
5. Connect a hose pipe to the upper coolant hose using a suitable connector.
6. Flush the engine using the hose pipe until the coolant flowing from the radiator lower coolant hose is clear.
7. Remove the hose pipe from the upper coolant hose connection.

Vehicles with supercharger

1. Install the radiator hose.

Vehicles without supercharger

1. Install the radiator hose.

All vehicles

1. Attach the radiator hose.
2. Install the thermostat. Refer to «Thermostat - Removal and Installation (Vehicles Without: Supercharger)»(ref-311046-S42834554692009032300000) or «Thermostat - Removal and Installation (Vehicles With: Supercharger)»(ref-311046-S24329315172009032300000) .
3. Fill the cooling system. Refer to «Cooling System Draining, Filling and Bleeding - General Procedures»(ref-311046-S08397875812009032300000) .