Removal and Replacement

Camshafts





Removal

NOTICE: At no time, when the timing chains are removed and the cylinder heads are installed, may the crankshaft or camshaft be rotated. Severe piston and valve damage will occur.

1. Remove the camshaft roller followers. For additional information, refer to Camshaft Roller Follower Camshaft Roller Follower.

2. Loosen the camshaft sprocket bolt.

3. Remove the timing chains. For additional information, refer to Timing Drive Components Removal and Replacement.

4. Remove the bolt and the camshaft sprocket.

5. NOTE: The camshaft bearing caps must be installed in their original location. Record camshaft bearing cap location.

Remove the 13 bolts, the 2 bearing caps and the camshaft.


6. Clean and inspect the camshaft bearing caps.
- One of the bearing caps contains an oil flow restriction groove. Make sure the groove is free of foreign material.






Installation

1. Lubricate the camshaft journals with clean engine oil.





2. Install the camshaft and the 2 camshaft bearing caps in their original locations.
- Lubricate the camshaft bearing caps with clean engine oil.

- Position the 2 camshaft bearing caps.

- Install the 13 bolts loosely.


3. NOTE: LH shown, RH similar.

Tighten the 13 bolts in the sequence shown.

- Tighten to 10 Nm (89 lb-in).






4. Position the camshaft sprocket and install the bolt finger-tight.

5. Install the timing chains. For additional information, refer to Timing Drive Components Removal and Replacement.

6. Tighten the camshaft sprocket bolt in 2 stages.
- Stage 1: Tighten to 40 Nm (30 lb-ft).

- Stage 2: Tighten an additional 90 degrees.


7. Install the camshaft roller followers. For additional information, refer to Camshaft Roller Follower Camshaft Roller Follower.