Tools Required

J 43655 Sprocket Holding Tool

1. Remove the camshaft cover. Refer to Camshaft Cover Replacement .



2. Remove the upper timing chain guide.



3. Install the J 43655 .



4. Remove both the intake and exhaust camshaft sprocket bolts and discard.
5. Slide the camshaft sprockets forward.



6. Mark bearing caps to ensure they are installed in the original position.

Important: Remove each bolt on each cap one turn at a time until there is no spring tension on the camshaft.

7. Remove the bearing caps.
8. Remove the intake camshaft.



9. Remove the camshaft roller followers.



10. Remove the hydraulic element lash adjusters.

1. Lubricate the valve tips.



2. Install the hydraulic element lash adjusters.



3. Install the camshaft roller followers.



4. Ensure that the alignment notches are aligned with the camshaft sprocket.



5. Install the intake camshaft.
6. Install the camshaft bearing caps.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

7. Tighten the camshaft bearing cap bolts in increments of 3 turns until they are seated.

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




8. Apply a 5 mm (0.197 in) bead of Permatex Anaerobic Gasket Maker®  51813, or equivalent, to the rear intake camshaft bearing cap.
9. Install the rear intake camshaft bearing cap bolts.

Tighten
Tighten the bolts to 25 N·m (18 lb ft).

10. Install camshaft sprockets onto the camshafts.
11. Hand tighten NEW camshaft sprocket bolts.
12. Remove the J 43655 .



13. Tighten the camshaft sprocket bolts.

Tighten
Tighten the bolts to 85 N·m (63 lb ft) plus 30 degrees.




14. Install the upper timing chain guide.

Tighten
Tighten the upper timing chain guide to 10 N·m (89 lb in).

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