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Timing Chain and Tensioner Removal (LDK, LHU)

Timing Chain and Tensioner Removal (LDK, LHU)


Special Tools

EN-48953 Camshaft Actuator Locking Tool

For equivalent regional tools, refer to Special Tools (LDK, LHU)



1. Remove the upper timing chain guide bolts.


2. Remove the upper timing chain guide (1).

3.
Note

The timing chain tensioner must be removed to unload chain tension before the timing chain is removed. If it is not, the timing chain will become cocked and it will be difficult to remove.


Remove the timing chain tensioner (1).


4. Rotate intake camshaft actuators to install EN-48953 locking tool (1).


5.
Note

Marking the chain and actuators is crucial to procedures operation. The camshaft actuator and timing chain must have oil removed from the surface prior to marking both actuators and chain.


Install EN-48953 locking tool onto the cylinder head and tighten to 10N m (89 lb in) . If the intake camshaft actuator is moving independent of cam and is not locked, rotate the intake camshaft counter-clockwise and the tool will hold the actuator, locking the actuator to the cam.

6. Loosen the intake camshaft actuator bolt.

7. Loosen the exhaust camshaft actuator bolt.

8. Remove EN-48953 locking tool.

9. Locate hex on the exhaust camshaft and hold with a wrench (2).


10. Remove the exhaust cam bolt and the exhaust cam actuator (1).

Discard the bolt.

11. Remove the adjustable timing chain guide bolt.


12. Remove the adjustable timing chain guide (1).

13. Remove the plug (1) to gain access to the fixed timing chain guide bolt.


14. Remove the fixed timing chain guide bolts.


15. Remove the fixed timing chain guide (1).

16. Locate hex on the intake camshaft and hold with a wrench.


17. Remove the intake cam sprocket bolt, the intake cam sprocket (1) and the timing chain (2) through the top of the cylinder head. Discard the bolt.

18.
Note

The number 3 exhaust valves are open.


Note

Note the position and direction of the camshafts before removal. Mark the cylinder head in relation to the locking notches before component removal.


Mark the cylinder head where the exhaust camshaft actuator locking notch (1) and intake camshaft locking notch (2) are lined up with the cylinder head.


19. Remove the friction washers (1), if equipped.


20. Remove the crankshaft sprocket (2).

21. Remove the timing chain oil nozzle bolt.


22. Remove the timing chain oil nozzle (1).