Special Tools

1. Remove the camshaft cover. Refer to Camshaft Cover Replacement.
2. Remove the upper timing chain guide bolts and guide.



3. Install a 24 mm wrench onto the hex on the camshaft in order to rotate the camshafts clockwise and install the camshaft actuator retainer EN-48953  (1).

Notice: Refer to Fastener Notice in the Preface section.

4. Install the camshaft actuator retainer bolts.

Tighten
Tighten the bolts to 10 N·m (89 lb in).

5. Loosen, but do not remove the intake and exhaust camshaft actuator bolts.

Important: Ensure the timing chain and the camshaft position actuators are marked for proper assembly.

6. Mark the intake and exhaust camshaft actuators and the respective locations on the timing chain.



7. Remove the timing chain tensioner.




Important: The camshaft actuators should not rotate during the removal or installation.

Important: Ensure the tips of the EN-48749 are fully engaged into the timing chain. The retention tool rod can be used on the back side of the chain to ensure the teeth from the retention tool are engaged.

8. Install the timing chain retention tool EN-48749  (1) to the exhaust side of the timing chain.



9. Remove and discard the exhaust camshaft actuator bolt (2).
10. Remove the exhaust camshaft actuator (3) from the camshaft while also removing the actuator from the timing chain.

Important: Ensure that the alignment mark made previously on the intake camshaft actuator is still aligned properly with the mark on the timing chain.

Important: The exhaust camshaft may need to be rotated clockwise to fully set the camshaft actuator.

1. Install the timing chain onto the exhaust camshaft actuator.
2. Align the exhaust camshaft actuator alignment mark made previously with the timing chain mark and install the actuator onto the camshaft.
3. Install a NEW exhaust camshaft actuator bolt (2) until snug.



4. Remove the timing chain retention tool EN-48749  (1) from the exhaust side of the timing chain.
5. Install the timing chain tensioner. Refer to Timing Chain Tensioner Replacement.



6. Install the camshaft actuator retainer (1).
7. Install the camshaft actuator retainer bolts.

Tighten
Tighten the bolts to 10 N·m (89 lb in).




8. Remove the tool (1) from the exhaust camshaft side of the timing chain assembly.
9. Install a 24 mm wrench onto the hex on the camshaft in order to hold the camshaft.
10. Tighten the NEW camshaft actuator bolt.

Tighten
Tighten the bolt to 85 N·m (63 lb ft), plus an additional 30 degrees using the J 45059 .

Important: You must have the EN-48953 installed to perform this procedure.

11. Release the tensioner by rotating the crankshaft balancer counterclockwise and tighten the bolt.

Tighten
Tighten the bolt to 45 N·m (33 lb ft).




12. Remove the camshaft actuator retainer EN-48953  (1).



13. Install the upper timing chain guide and bolts.

Tighten
Tighten the bolts to 10 N·m (89 lb in).

14. Install the camshaft cover. Refer to Camshaft Cover Replacement.

Special Tools

1. Remove the camshaft cover. Refer to Camshaft Cover Replacement.
2. Remove the spark plugs. Refer to Spark Plug Replacement.



3. Rotate the crankshaft clockwise and install the camshaft actuator retainer EN-48953 (1).

Caution: Refer to Fastener Caution in the Preface section.

4. Install the camshaft actuator retainer bolts and tighten to 10 N·m (89 lb in).
5. Loosen, but do not remove the exhaust camshaft actuator bolt.

Note: Ensure the timing chain and the camshaft position actuators are marked for proper assembly.

6. Mark the intake and exhaust camshaft actuators and the respective locations on the timing chain.



7. Remove the upper timing chain guide bolts and guide.



8. Remove the timing chain tensioner.




Note: 

•	The camshaft actuators should not rotate during the removal or installation.

•	Ensure the tips of the EN-48749 are fully engaged into the timing chain. The retention tool rod can be used on the back side of the chain to ensure the teeth from the retention tool are engaged.

9. Install the timing chain retention tool EN-48749 (1) to the exhaust side of the timing chain.



10. Remove and discard the exhaust camshaft actuator bolt (2).
11. Remove the exhaust camshaft actuator (3) from the camshaft while also removing the actuator from the timing chain.

Note: 

•	Ensure that the alignment mark made previously on the intake camshaft actuator is still aligned properly with the mark on the timing chain.

•	The exhaust camshaft may need to be rotated clockwise to fully set the camshaft actuator.

1. Install the timing chain onto the exhaust camshaft actuator.
2. Align the exhaust camshaft actuator alignment mark made previously with the timing chain mark and install the actuator onto the camshaft.
3. Install a NEW exhaust camshaft actuator bolt (2) until snug.



4. Remove the timing chain retention tool EN-48749 (1) from the exhaust side of the timing chain.
5. Reset and install the timing chain tensioner. Refer to Timing Chain Tensioner Replacement.



6. Install the camshaft actuator retainer (1).
7. Install the camshaft actuator retainer bolts and tighten 10 N·m (89 lb in).
8. Tighten the NEW camshaft actuator bolt to 30 N·m (22 lb ft) plus an additional 100 degrees using the J 45059 .

Note: You must have the EN-48953 installed to perform this procedure.

9. Release the tensioner by rotating the crankshaft balancer counterclockwise then tighten the bolt to 45 N·m (33 lb ft)..



10. Remove the camshaft actuator retainer EN-48953 (1).



11. Install the upper timing chain guide and bolts and tighten to 10 N·m (89 lb in).
12. Install the camshaft cover. Refer to Camshaft Cover Replacement.
13. Install the spark plugs. Refer to Spark Plug Replacement.