Cylinder Head

Cylinder Head









NOTE: RH cylinder head shown, LH cylinder head similar.









Disassembly

All cylinder heads

1. Remove the 8 nuts and the exhaust manifold.
- Discard the nuts and gasket.


2. Clean and inspect the exhaust manifold.

3. Remove and discard the 8 exhaust manifold studs.

4. Remove the timing chain guide pin.

5. Remove the turbocharger coolant return fitting.

6. NOTE: If the components are to be reinstalled, they must be installed in the same positions. Mark the components for installation into their original locations.

Using the Valve Spring Compressors, remove the keys, retainer and spring.






7. Remove the valve from the cylinder head.

8. Remove and discard the valve stem seal.

9. Repeat the above steps for each valve.

RH cylinder head

10. Remove the timing chain tensioner arm pin.

Assembly

All cylinder heads

1. NOTE: If the components are to being reinstalled, they must be installed into their original location.

NOTE: Lubricate the valve stem and valve stem seal with clean engine oil prior to installation.

Using the Valve Stem Oil Seal Installer, install a new valve stem seal.






2. Install the valve.

3. Using the Valve Spring Compressors, install the valve spring, retainer and key.





4. Repeat the above steps for each valve.

5. Install the timing chain guide pin and tighten in 2 stages.
- Stage 1: Tighten to 20 Nm (177 lb-in).

- Stage 2: Tighten an additional 60 degrees.


6. Install the turbocharger coolant return fitting.
- Tighten to 18 Nm (159 lb-in).


LH cylinder head

7. Install the timing chain tensioner arm pin and tighten in 2 stages.
- Stage 1: Tighten to 20 Nm (177 lb-in).

- Stage 2: Tighten an additional 60 degrees.


8. Install 8 new LH exhaust manifold studs.
- Tighten to 12 Nm (106 lb-in).


9. NOTICE: Failure to tighten the exhaust manifold nuts to specification a second time will cause the exhaust manifold to develop an exhaust leak.

Using a new gasket, install the LH exhaust manifold and 8 new nuts. Tighten in 2 stages in the sequence shown:
- Stage 1: Tighten to 19 Nm (168 lb-in).

- Stage 2: Tighten to 25 Nm (18 lb-ft).






RH cylinder head

10. Install 8 new RH exhaust manifold studs.
- Tighten to 12 Nm (106 lb-in).


11. NOTICE: Failure to tighten the exhaust manifold nuts to specification a second time will cause the exhaust manifold to develop an exhaust leak.

Using a new gasket, install the RH exhaust manifold and 8 new nuts. Tighten in 2 stages in the sequence shown:
- Stage 1: Tighten to 19 Nm (168 lb-in).

- Stage 2: Tighten to 25 Nm (18 lb-ft).