Cylinder Head Disassemble

Tools Required 

J 8062  Valve Spring Compressor

Fig 1: View Of Cylinder Head Components
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IMPORTANT:
• Remove the spark plugs from the cylinder head with the components at room temperature.
• Mark, organize, or sort the cylinder head components for assembly. Return the components to their original location during assembly.
• Do not remove the cylinder head expansion plugs (226) unless service is required.
1. Remove the spark plugs from the cylinder heads.
Fig 2: Compressing Valve Spring Using
Courtesy of GENERAL MOTORS CORP.
2. Use the J 8062  in order to compress the valve spring.
Fig 3: View Of Cylinder Head Components
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3. Remove the valve stem keys (225).
4. Remove the valve spring cap (224).
5. Remove the valve spring (223).
6. Remove the valves (227 and 228).
7. Remove the valve stem oil seal (222). Refer to Separating Parts .
Fig 4: View Of Cylinder Head Expansion Plugs
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8. Remove the cylinder head expansion plugs (226), if required.
Fig 5: View Of Coolant Temperature Sensor (Left Cylinder Head)
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9. Remove the coolant sensor from the left cylinder head.
Fig 6: View Of Coolant Plug (Right Cylinder Head)
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10. Remove the coolant plug from the right cylinder head.