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2010 Land Rover Range Rover (LM) V8-5.0L SC Technical Service Bulletin # TECLTB00474 Date: 120806

2010 Land Rover Range Rover (LM) V8-5.0L SC Technical Service Bulletin # TECLTB00474 Date: 120806



Engine - Rattle/Click Noise From Front Of Engine



LTB00474NAS



06 AUG 2012



SECTION: 303-01



"Rattle"/"Click" Noise from Front of Engine



AFFECTED VEHICLE RANGE



CONDITION SUMMARY:



Situation:



A 'rattle' / 'click' noise may be heard from the front of the engine. The noise may be more pronounced when the engine is at idle speed



Cause:



This may be caused by insufficient tension on the engine's primary chain system.



Action:



In the event of a customer concern of the above, refer to the Repair Procedure outlined below.



2010 Land Rover Range Rover (LM) V8-5.0L SC Page 11



PARTS



TOOLS:



Refer to Workshop Manual for any required special tools



WARRANTY



REPAIR PROCEDURE



VEHICLES WITH LESS THAN 500 MILES (800 KM)



1. Refer to Workshop Manual section 414-00 and disconnect the battery ground cable.



2. Refer to Workshop Manual section 303-01 and remove the lower timing cover.



2010 Land Rover Range Rover (LM) V8-5.0L SC Page 12



3. Check that the tensioner plunger is not stuck within the tensioner body.



^ If there is a gap between the tensioner plunger and the tensioner blade, the tensioner plunger is stuck within the tensioner body, carry out



steps 5 to 9.



^ If there is no gap between the tensioner plunger and the tensioner blade, carry out step 4.



4. Make sure that the timing chain tensioner plunger is positioned in the first ratchet position.



^ Firmly squeeze the timing chain to see if the tensioner plunger retracts in to the tensioner body.



^ If the tensioner plunger retracts all the way in to the tensioner body and/or if the tensioner blade makes contact with the tensioner body, the



tensioner plunger is not in the first ratchet position, carry out steps 10 to 12.



NOTE:



Only carry out steps 5 to 9 if the tensioner plunger is stuck within the tensioner body.



5. Using a suitable tie-strap, secure the tensioner blade away from the tensioner.



2010 Land Rover Range Rover (LM) V8-5.0L SC Page 13



6. Remove the tensioner.



^ Remove the two (2) Torx bolts.



CAUTION:



Make sure that the plunger exerts pressure against the pin



7. Reset the tensioner.



a. Make sure the plunger is fully extended.



b. Push the plunger in to the tensioner body.



C. Continue to apply pressure to the plunger until it is fully retracted in to the tensioner body.



d. Insert a suitable pin.



2010 Land Rover Range Rover (LM) V8-5.0L SC Page 14



8. Install the tensioner.



^ Tighten the two (2) Torx bolts to 10 Nm.



CAUTION:



Make sure that the plunger exerts pressure against the tensioner blade



9. Release the tensioner plunger.



^ Remove the pin.



^ Proceed to step 13.



NOTE:



Only carry out steps 10 to 12 if the tensioner plunger is not in the first ratchet position



CAUTION:



Do not remove the lower Torx bolt



2010 Land Rover Range Rover (LM) V8-5.0L SC Page 15



10. Release the tensioner.



^ Remove the upper Torx bolt.



^ Slacken the lower Torx bolt.



^ Allow the tensioner to pivot around the lower bolt, this will allow the plunger to extend and latch in to the first ratchet position.



CAUTION:



Do not use a metal tool to lever the tensioner



CAUTION:



Make sure that the upper Torx bolt is installed finger tight before removing the lever from the tensioner.



11. Re-position the tensioner.



^ Using a suitable plastic tool, lever the tensioner in to the correct position.



^ Install the upper Torx bolt.



12. Secure the tensioner.



^ Tighten the two (2) Torx bolts to 10 Nm.



^ Repeat the check in step 4 to make sure that the plunger is in the first ratchet position.



^ Continue to step 13.



13. Carry out the checks in steps 3 and 4 to the tensioner on the other engine bank, and carry out rectification if required.



14. Refer to Workshop Manual section 303-01 and install the lower timing cover.



15. Refer to Workshop Manual section 414-00 and connect the battery ground cable.



VEHICLES WITH MORE THAN 500 MILES (800 KM) BUT LESS THAN 40,000 MILES (64,000 KM)



2010 Land Rover Range Rover (LM) V8-5.0L SC Page 16



NOTE:



LR4 and Range Rover Sport Only



NOTE:



Do not remove the timing chain guides



16. Remove and discard the tensioner blades and tensioners from both engine banks.



^ Refer to Workshop Manual section 303-01 and carry out removal steps 1 to 14 and step 16 of the Timing Drive Components procedure.



NOTE:



LR4 and Range Rover Sport Only



17. Install the new tensioner blades and tensioners.



^ Refer to Workshop Manual section 303-01 and carry out install step 1 and steps 3 to 50 of the Timing Drive Components procedure.



NOTE:



Range Rover Only



NOTE:



Do not remove the timing chain guides



18. Remove and discard the tensioner blades and tensioners from both engine banks.



^ Refer to Workshop Manual section 303-01 and carry out removal steps 1 to 14 and step 16 of the Timing Drive Components procedure.



NOTE:



Range Rover Only



19. Install the new tensioner blades and tensioners.



^ Refer to Workshop Manual section 303-01 and carry out install step 1 and steps 3 to 45 of the Timing Drive Components procedure.



VEHICLES WITH MORE THAN 40,000 MILES (64,000 KM)



20. Refer to Workshop Manual section 303-01 and replace the tensioner blades, tensioners, chain guides and timing chain of the Timing Drive

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