57. Cylinder Head Disassemble

Cylinder Head Disassemble


Tools Required
* EN 46116 Valve Stem Seal Remover/Installer
* EN 46117 Valve Stem Key Remover/Installer
* EN 46119 Off-Vehicle Valve Spring Compressor Adapter
* J 8062 Valve Spring Compressor - Head Off






1. Remove the engine coolant temperature (ECT) sensor.




2. Remove the spark plugs.





Important: Ensure valve heads will not contact anything during the following step in order to avoid bending or damage.


3. Using an appropriately sized deep socket and a plastic hammer, lightly tap on the valve spring retainer to loosen the valve keepers.





Caution: Compressed valve springs have high tension against the valve spring compressor. Valve springs that are not properly compressed by or released from the valve spring compressor can be ejected from the valve spring compressor with intense force. Use care when compressing or releasing the valve spring with the valve spring compressor and when removing or installing the valve stem keys. Failing to use care may cause personal injury.


Notice: Do not compress the valve springs less than 24.0 mm (0.943 in). Contact between the valve spring retainer and the valve stem oil seal can cause potential valve stem oil seal damage.

4. Compress the valve spring using the J 8062 and the EN 46119.




5. Use the magnet of the EN 46117 in order to remove the valve keepers.
6. Remove the valve spring compressor and the adapter.




7. Remove the valve spring retainer.
8. Remove the valve spring.




9. Remove the valve.





Important: NEVER reuse a valve stem oil seal.


10. Remove the valve stem oil seal using the EN 46116 and discard.
11. Repeat these procedures for the remaining valves.




12. Remove the cylinder head oil gallery expansion plugs.




13. Remove the cylinder head coolant threaded plugs.