Cylinder Head - Disassembly and Assembly

Cylinder Head









NOTE: LH shown, RH similar.










Disassembly

1. Using the Valve Spring Compressor, compress the valve spring and remove the valve spring retainer keys.





2. Remove the valve spring retainer, valve spring, valve stem seal and the valve.
- Discard the valve seal.





3. Repeat the above steps and remove all of the valve springs, valve stem seals and valves.
- Discard the valve stem seals.

4. Install the Camshaft Aligner and Camshaft Pulley Aligners on the camshaft.





5. Remove the camshaft sprocket bolt, washer and the camshaft sprocket.

6. Remove the Camshaft Aligner and Camshaft Pulley Aligners from the camshaft.

7. Remove the camshaft sprocket spacer.

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

9. 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.





10. NOTICE: The hydraulic lash adjusters must be installed in their original locations. Record the hydraulic lash adjuster locations. Failure to follow these instructions may result in engine damage.

Remove the hydraulic lash adjusters.





Assembly

1. NOTICE: The hydraulic lash adjusters must be installed in their original locations. Failure to follow this instruction may result in engine damage.

NOTE: Lubricate the hydraulic lash adjuster with clean engine oil prior to installation.

Install the hydraulic lash adjusters in their original locations.

- Lubricate the hydraulic lash adjusters with clean engine oil prior to installation.





2. Lubricate the camshaft journals with clean engine oil.





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

- Lubricate the camshaft journals and lobes with clean engine oil.

- Position the camshaft bearing caps.

- Install the 13 bolts loosely.





4. Tighten the 13 bolts in the sequence shown.
- Tighten to 10 Nm (89 lb-in).





5. Install the sprocket spacer, sprocket, washer and bolt.

1. Position the spacer, sprocket, washer and bolt.

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

- Stage 2: Tighten an additional 90 degrees.





6. Using the Valve Spring Compressor and Valve Stem Oil Seal Installer, install new valve seals.





7. Install the Valve Spring Compressor Spacer between the valve spring coils to protect the valve stem seal from damage.





8. Using the Valve Spring Compressor, install the valve spring, the spring retainer and the valve spring retainer keys.





9. Repeat the above steps and install the valve spring, the spring retainer and the valve spring retainer keys.