Cylinder Head - Disassembly and Assembly

Cylinder Head

















Disassembly

NOTE: If the components are to be reinstalled, mark the location of the components removed, they must be installed in the same location.

1. NOTE: One lifting eye shown, other lifting eye similar.

Remove the bolts and the 2 lifting eyes.





2. Remove the 4 bolts and the coolant outlet.
- Discard the gasket.

3. Remove the 2 bolts and the EGR valve.
- Discard the gasket.

4. Remove the Cylinder Head Temperature (CHT) sensor.

5. Remove the EGR tube.

6. NOTICE: Only use hand tools when removing or installing the spark plugs, or damage can occur to the cylinder head or spark plug.

NOTE: Use compressed air to remove any foreign material in the spark plug well before removing the spark plugs.

Remove the spark plugs.

7. NOTE: Use a small screwdriver and multi-purpose grease to remove the valve collets.

Using the Valve Spring Compressors, compress the valve spring and remove the valve spring collets, the valve spring retainers and the valve springs.





8. Inspect the valve spring, valve spring retainer and valve spring retainer key. For additional information, refer to Engine System - General Information Procedures.

9. NOTE: Note the location of the valves if they are to be reused.

NOTE: Mark each valve if the original valves are to be used.

Remove the valves.





10. Using the Valve Stem Oil Seal Remover and Slide Hammer, remove and discard the valve seals.





11. Inspect the valves. For additional information, refer to Engine System - General Information Procedures. Install new parts, as necessary.

Assembly

1. NOTE: If installing the original valves, make sure the valves are installed in the same position from which they were removed. Coat the valve stems with clean engine oil.

Install the valves.





2. NOTE: Use the protector provided with the replacement kit to prevent damage to the valve seals.

Lubricate the valve stems and guides with clean engine oil and, using the Valve Stem Oil Seal Installer, install the valve seals onto the cylinder head valve guides.





3. Place the valve spring in position over the valve and install the valve spring retainer.

4. NOTE: Use a small screwdriver and multi-purpose grease to install the valve collets.

Using the Valve Spring Compressors, compress the valve spring and install the valve collets.





5. NOTICE: Only use hand tools when removing or installing the spark plugs, or damage can occur to the cylinder head or spark plug.

Install the spark plugs.

- Tighten to 12 Nm (106 lb-in).

6. Install the EGR tube.
- Tighten to 55 Nm (41 lb-ft).

7. Install the CHT sensor.
- Tighten to 12 Nm (106 lb-in).

8. Using a new gasket, install the EGR valve, and the 2 bolts.
- Tighten to 20 Nm (177 lb-in).

9. Using a new gasket, install the coolant outlet and the 4 bolts.
- Tighten to 10 Nm (89 lb-in).

10. NOTE: One lifting eye shown, other lifting eye similar.

Install the 2 lifting eyes and the bolts.

- Tighten to 45 Nm (33 lb-ft).