Cylinder Head

Cylinder Head









NOTE: LH shown, RH similar.









Disassembly

NOTICE: Place the cylinder head on a cardboard or wood surface to prevent damage to the joint face.

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





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





3. NOTICE: Keep the valves and valve spring retainer keys in order so they can be reinstalled in their original locations. Failure to follow these instructions may result in engine damage.

Remove the valve spring retainers, valve springs and discard the valve seal.






4. NOTICE: The camshaft bearing caps must be reinstalled in their original locations. Record the camshaft bearing cap locations. Failure to follow these instructions may result in engine damage.

Remove the 13 bolts, 2 bearing caps and camshaft.






5. 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.






6. NOTICE: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges that make leak paths. Use a plastic scraping tool to clean sealing surfaces.

NOTE: If there is no residual gasket material present, metal surface prep can be used to clean and prepare the surfaces.

Clean the cylinder head sealing surfaces.
1. Remove any large deposits of silicone or gasket material with a plastic scraper.

2. Apply silicone gasket remover, following package directions, and allow to set for several minutes.

3. Remove the silicone gasket remover with a plastic scraper. A second application of silicone gasket remover may be required if residual traces of silicone or gasket material remain.

4. Apply metal surface prep, following package directions, to remove any remaining traces of oil or coolant, and to prepare the surfaces to bond with the new gasket. Do not attempt to make the metal shiny. Some staining of the metal surfaces is normal.


7. Inspect the cylinder head for distortion.

Assembly

1. Lubricate the camshaft journals with clean engine oil.





2. Install the camshaft and the 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. NOTE: Lubricate the valve stems using clean engine oil.

Install the valves in the valve guides located in the cylinder head.






5. NOTE: Lubricate the valve seals with clean engine oil prior to installation.

Using the Valve Spring Compressor and Valve Stem Oil Seal Installer, install the new valve stem seal.






6. Install the valve springs and the valve spring retainers onto the valves.





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





8. Using the Valve Spring Compressor, compress the valve springs. Install the valve spring retainer keys.





9. NOTE: Lubricate the hydraulic lash adjusters using clean engine oil.

Install the hydraulic lash adjusters in their original locations.






10. Remove the Valve Spring Compressor Spacer.