2010 JAGUAR XFR torque

Variable Camshaft Timing Unit Schematic - Advance


To advance the camshaft timing, the ECM adjusts the signal to the VCT solenoid to move the spool valve so that the advance chamber oil passage is closed and the retard chamber oil passage is connected to inlet oil.

Each momentary increase of the torque acting on the camshaft generates a pressure pulse in the retard chamber. Oil moves
from the retard chamber, through the spool valve and the advance check valve to the advance chamber, to equalize the
pressures in the two chambers. The displacement of oil from the retard chamber causes the rotor assembly to advance in
relation to the sprocket housing. Each momentary decrease of torque acting on the camshaft also generates a pressure pulse
in the advance chamber, but, with the advance chamber oil passage closed, no movement of oil between the advance and
retard chambers occurs and the rotor assembly cannot move in the retard direction.

chamber oil passage and connect the advance chamber oil passage to the inlet oil.

Each momentary decrease of the torque acting on the camshaft causes oil to transfer from the advance chamber, through the
spool valve and the retard check valve to the retard chamber, and so retard the camshaft timing. www.JagDocs.com

Filling


1. CAUTION: Make sure that the area around the
component is clean and free of foreign material.


NOTE: Install a new sealing washer.
Torque: 24 Nm







2. Refer to: Air Deflector (501-02 Front End Body Panels, Removal and Installation).


3. NOTE: Install new O-ring seals.

Lubricate the oil filter element O-ring seal with clean
engine oil.













4. CAUTION: Tighten the component finger tight first.
Torque: 25 Nm











5. CAUTION: Make sure that the vehicle is left for 5 minutes from
filling with oil and that the engine oil level is reading at least minimum
(by following Steps 9-13), before starting the engine.

Fill the engine with oil - for filling values on vehicles without
supercharger:

Refer to: Specifications (303-01C Engine - V8 5.0L Petrol, Specifications).
Fill the engine with oil - for filling values on vehicles with
supercharger:

8. NOTE: Discard the O-ring seals.
















Filling

1. NOTE: Install new O-ring seals.
Lubricate the oil filter element O-ring seal with clean
engine oil.













2. CAUTION: Tighten the component finger tight first.
Torque: 25 Nm











3. CAUTION: Make sure that the vehicle is left for 5 minutes from
filling with oil and that the engine oil level is reading at least minimum
(by following Steps 7-11), before starting the engine.

Fill the engine with oil - for filling values on vehicles without
supercharger:

Refer to: Specifications (303-01C Engine - V8 5.0L Petrol, Specifications).
Fill the engine with oil - for filling values on vehicles with
supercharger:

Refer to: Specifications (303-01D Engine - V8 S/C 5.0L Petrol,

13.
14.
15.
16. Remove the Special Tool(s): JLR-303-1621

























NOTE: Install a new seal.

Torque: 12 Nm
































Remove the Special Tool(s): 303-1447

17.
18. Torque: 10 Nm


















NOTE: Install a new sealing washer.

Torque: 24 Nm









19.




20. Refer to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures).



CAUTION: Make sure that the vehicle is left for 5 minutes from filling with oil and
that the engine oil level is reading at least minimum (by following Steps 23-27), before
starting the engine.

Fill the engine with oil - for filling values on vehicles without supercharger:

Refer to: Specifications (303-01C Engine - V8 5.0L Petrol, Specifications). Fill the engine with oil - for filling values on vehicles with supercharger:

Refer to: Specifications (303-01D Engine - V8 S/C 5.0L Petrol, Specifications). Clean any residual engine oil from the oil filler cap area.


21.
oil. CAUTION: Make sure that the vehicle has been left for 5 minutes from filling with

Follow the Steps 23-27 before starting the engine.

22.
Start the engine and allow to run for 10 minutes, stop the engine.
Check for leaks.

23. CAUTIONS:


Make sure that the selector lever and the gearshift mechanism are in the park (P)
position.


Make sure that the hood is open.
Turn the ignition on.

5. CAUTIONS:


Make sure that the area around the component is
clean and free of foreign material.


Inspect the 3 timing chain oil nozzles for signs of
damage, install as necessary.

















6. NOTE: Using a suitable tie strap, position the
tensioner to one side.

Special Tool(s): JLR-303-1613 Torque: 12 Nm

























7. Refer to: Lower Timing Cover (303-01C Engine - V8 5.0L Petrol, Removal and Installation).
Refer to: Lower Timing Cover (303-01D Engine - V8 S/C 5.0L Petrol, Removal and Installation).

8.
9.
10. Remove the Special Tool(s): 303-1447
















Torque: 10 Nm


















NOTE: Install a new sealing washer.
Torque: 24 Nm










11. Refer to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures).


12. CAUTION: Make sure that the vehicle is left for 5 minutes from
filling with oil and that the engine oil level is reading at least minimum
(by following Steps 15-19), before starting the engine.

Fill the engine with oil - for filling values on vehicles without
supercharger:

Refer to: Specifications (303-01C Engine - V8 5.0L Petrol, Specifications).
Fill the engine with oil - for filling values on vehicles with
supercharger: