Spark

Camshaft Replacement

1. Remove the camshaft sprocket. Refer to Camshaft Exhaust Sprocket Replacement .



2. Check the camshaft lobe (1) is in a neutral position.



3. Observe the markings on the bearing caps. Each bearing cap is marked in order to identify its location. The markings have the following meanings:

•	The raised feature must always be oriented toward the center of the cylinder head.

•	The I indicates the intake camshaft.

•	The E indicates the exhaust camshaft.

•	The number indicates the journal position from the front of the cylinder block.




4. Loosen the 20 camshaft bearing cap bolts (3) working from outside to inside in a spiral in steps of 1/2 up to 1 turn.
5. Remove the 20 camshaft bearing cap bolts (3).

Note: Mark camshaft bearing caps before removal.

6. Remove the camshaft bearing caps (1, 2) from the cylinder head.



7. Remove the camshafts (1).

1. Install the camshafts (1).



2. Check the camshaft lobes (1) are in a neutral position.



3. Install the camshaft bearing thrust cap (1) in the first journal of the right cylinder head.
4. Install the remaining bearing caps (2) with their orientation mark toward the centre of the cylinder head.
5. Hand start all the camshaft bearing caps to cylinder head retaining bolts (3).

Note: Check and confirm the bearing cap sequence.

6. Tighten the 20 camshaft bearing cap bolts (3) working from outside to inside in a spiral in steps of 1/2 up to 1 turn.
7. Tighten the 20 camshaft bearing cap bolts to 10 N·m (89 lb in).



8. Observe the markings on the bearing caps. Each bearing cap is marked in order to identify its location. The markings have the following meanings:

•	The raised feature must always be oriented toward the center of the cylinder head.

•	The I indicates the intake camshaft.

•	The E indicates the exhaust camshaft.

•	The number indicates the journal position from the front of the cylinder block.

9. Install the camshaft sprocket. Refer to Camshaft Exhaust Sprocket Replacement .