Overhaul

Cylinder Head

















Disassembly

NOTE: If the components are to be reinstalled, they must be installed in the same positions. Mark the components removed for locations.

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

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

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

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

Remove the spark plugs.

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

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





6. Inspect the components, if necessary. For additional information, refer to Engine.

7. Remove the valves.

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





9. Inspect the valves. For additional information, refer to Engine. Install new parts, as necessary.

Assembly

1. NOTE: 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.

Using the Valve Stem Oil Seal Installer, install the valve seals.





3. NOTE: Check the seating of the valve collets.

Using the Valve Spring Compressors, install the valve springs.

- Insert the valve springs and the valve spring retainers.

- Compress the valve springs and install the valve collets, using multi-purpose grease and a small screwdriver.





4. 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).

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

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

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