Removal

Camshaft





NOTICE: During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces, that enters the oil passages, coolant passages or the oil pan can cause engine failure.

All camshafts

1. Remove the engine front cover. For additional information, refer to Engine Front Cover Removal.

2. Rotate the crankshaft clockwise and align the timing marks on the Variable Camshaft Timing (VCT) assemblies as shown.





3. NOTE: The Camshaft Holding Tool will hold the camshafts in the Top Dead Center (TDC) position.
Install the Camshaft Holding Tool onto the flats of the LH camshafts.






4. NOTE: The Camshaft Holding Tool will hold the camshafts in the TDC (Top Dead Center) position.
Install the Camshaft Holding Tool onto the flats of the RH camshafts.






5. Remove the 3 bolts and the RH VCT (Variable Camshaft Timing) housing.





6. Remove the 3 bolts and the LH VCT (Variable Camshaft Timing) housing.





NOTE: The following 3 steps are for primary timing chains when the colored links are not visible.

7. Mark the timing chain link that aligns with the timing mark on the RH intake VCT (Variable Camshaft Timing) assembly as shown.





8. Mark the timing chain link that aligns with the timing mark on the LH intake VCT (Variable Camshaft Timing) assembly as shown.





9. NOTE: The crankshaft sprocket timing mark should be between the 2 colored links.
Mark the 2 timing chain links that align with the timing mark on the crankshaft sprocket as shown.






10. Remove the 2 bolts and the primary timing chain tensioner.





11. Remove the primary timing chain tensioner arm.





12. Remove the 2 bolts and the lower LH primary timing chain guide.





13. Remove the primary timing chain.





LH camshafts

14. Compress the LH secondary timing chain tensioner and install a suitable lockpin to retain the tensioner in the collapsed position.





15. NOTE: The VCT (Variable Camshaft Timing) bolt and the exhaust camshaft bolt must be discarded and new ones installed. However, the exhaust camshaft washer is reusable.
Remove and discard the LH VCT (Variable Camshaft Timing) assembly bolt and the LH exhaust camshaft sprocket bolt.

- Remove the LH VCT (Variable Camshaft Timing) assembly, secondary timing chain and the LH exhaust camshaft sprocket as an assembly.






16. NOTE: When the Camshaft Holding Tool is removed, valve spring pressure will rotate the LH camshafts approximately 3 degrees to a neutral position.
Remove the Camshaft Holding Tool from the LH camshafts.






17. NOTICE: The camshafts must remain in the neutral position during removal or engine damage may occur.

Verify the LH camshafts are in the neutral position.






18. NOTE: Cylinder head camshaft bearing caps are numbered to verify that they are assembled in their original positions.
Remove the bolts and the LH camshaft bearing caps.

- Remove the LH camshafts.






RH camshafts

19. Compress the RH secondary timing chain tensioner and install a suitable lockpin to retain the tensioner in the collapsed position.





20. NOTE: The VCT (Variable Camshaft Timing) bolt and the exhaust camshaft bolt must be discarded and new ones installed. However, the exhaust camshaft washer is reusable.
Remove and discard the RH VCT (Variable Camshaft Timing) assembly bolt and the RH exhaust camshaft sprocket bolt.

- Remove the RH VCT (Variable Camshaft Timing) assembly, secondary timing chain and the RH exhaust camshaft sprocket as an assembly.






21. Remove the Camshaft Holding Tool from the RH camshafts.





22. NOTICE: The camshafts must remain in the neutral position during removal or engine damage may occur.

Rotate the RH camshafts counterclockwise to the neutral position.






23. NOTE: Cylinder head camshaft bearing caps are numbered to verify that they are assembled in their original positions.
Remove the bolts and the RH camshaft bearing caps.

- Remove the RH camshafts.