Tools Required

1. Disconnect the negative battery cable.
2. Remove the intake manifold. Refer to Intake Manifold Replacement .
3. Install the J 45482.



4. Remove the rear camshaft cover. Refer to Camshaft Cover Replacement - Right Side .
5. Remove the timing belt. Refer to Timing Belt Replacement .




Important: As a precautions, rotate the crankshaft counterclockwise to 60 degrees BTDC position to prevent valve/piston contact.

6. Insert the J 42069-1 into the camshaft gears to hold the gear in place while loosening the camshaft gear bolt.
7. Remove the J 42069-1.



8. Remove the camshaft gear bolt.
9. Remove the camshaft gear.




Important: The intake camshaft is marked with the letter A and the exhaust camshaft is marked with the letter E.

Important: Ensure that the camshaft is not under load from lifter(s) and that the camshaft comes out of bearing seats evenly.

10. Loosen the camshaft bearing cap bolts sequentially starting from the center and moving outward in a spiral directions in stage of 1/2 to 1 turn.
11. Remove the camshaft bearing cap bolts.
12. Remove the camshaft bearing caps. Note the code marks on the bearing caps.

Important: The bearing caps for the rear side (CYL 1, 3, 5) cylinder head are marked with an L followed by a number.

13. Remove the camshaft with seal attached.
14. Remove the camshaft seal.




Important: A magnet can be used to remove the lifters from the lifter bore.

15. Remove the lifters if being serviced.
16. Clean all bearing and sealing surfaces.

1. Lubricate the camshaft bearing surfaces with clean engine oil.

Important: 

•	The intake is marked with the letter A.

•	The exhaust is marked with the letter E.

2. Install the lifter assembly if removed.
3. Install the camshaft to the cylinder head.




Important: Ensure the pin on the exhaust camshaft is approximately in the 1 o'clock position and/or that the pin on the intake camshaft is approximately in the 11 o'clock position to allow for minimal load on the camshaft when installing the bearing caps.

4. Apply a small amount of Permatex® Anaerobic Flange Sealant (or equivalent) on the forward edge of the front bearing caps to ensure an adequate seal between the bearing cap and cylinder head.



5. The bearing caps for the rear (CYL 1, 3, 5) cylinder head are marked L1-L8 (Cylinder 1, 3, 5).
6. Install the camshaft bearing caps in their appropriate position.

Notice: Refer to Fastener Notice in the Preface section.





Important: DO NOT allow the sealer to get into the journal of the cap.

7. Install in sequence and torque the camshaft bearing caps bolts.

Tighten
Tighten the camshaft bearing cap bolt to 8 N·m (71 lb in).




8. Coat the lip of the seal with a small amount of clean engine oil to aid in the installation.
9. Use the J 35268-A to seat the camshaft seal into place.
10. On the rear exhaust camshaft seal, the J 35749 must be used.
11. Ensure that the camshaft seal i fully and evenly seated.




Important: Use a new camshaft sprocket bolt. The required tightening method will stretch the bolt, to its yield point. Therefore, the bolt is not reusable.

12. Install the camshaft gear bolt. Use J 42069-1 and J 42069-2 camshaft gear locks to lock the camshaft gears while torquing.

Tighten
Tighten the camshaft sprocket bolt to 50 N·m (37 lb ft) + 60 degrees + 15 degrees.




13. Install the timing belt. Refer to Timing Belt Replacement .
14. Install the rear camshaft cover. Refer to Camshaft Cover Replacement - Right Side .



15. Remove the J 45482.
16. Install the intake manifold. Refer to Intake Manifold Replacement .
17. Connect the negative battery cable.

Tighten
Tighten the battery terminal bolt to 17 N·m (13 lb ft).