Cylinder Head Disassemble

Special Tools

• EN-8062:  Valve Spring Compressor
• EN-36017:  Valve Seal Remover
• EN-43963:  Valve Spring Compressor (off car)

For equivalent regional tools, refer to Special Tools .

Fig 1: Identifying the Coolant Air Bleed Hose Fitting
Courtesy of GENERAL MOTORS CORP.
1. Remove the coolant air bleed hose fitting (1).
Fig 2: View of Valve Keys and Retainer
Courtesy of GENERAL MOTORS CORP.
NOTE: Ensure that the valve train components are kept together and identified in order for proper re-installation in their original position.
2. Using the EN-8062:  compressor and the EN-43963:  compressor (off car), compress the valve spring.
3. Remove the valve keys (1).
4. Slowly release the EN-8062:  compressor and the EN-43963:  compressor (off car) from the valve spring assembly.
5. Remove the retainer (2).
Fig 3: View of Valve Springs
Courtesy of GENERAL MOTORS CORP.
6. Remove the springs (1).
Fig 4: View of Valve Seals
Courtesy of GENERAL MOTORS CORP.
CAUTION: Do not damage the valve guide. Remove any burrs that have formed at the key groove by chamfering the valve stem with an oil stone or a file.
7. Remove the valve seals (1). Use the EN-36017:  remover. Do not reuse.
Fig 5: View of Valves
Courtesy of GENERAL MOTORS CORP.
8. Remove the valves (1).
Fig 6: View of Cylinder Head Plugs and Oil Restrictor
Courtesy of GENERAL MOTORS CORP.
9. Remove the cylinder head plugs (1) and oil restrictor.