Cylinder Head Disassemble

Special Tools

• J-8062  Valve Spring Compressor
• EN-46116  Valve Stem Seal Remover/Installer
• EN-50031  Valve Spring Compressor (off-vehicle)

Equivalent regional tools:Special Tools 

1. Courtesy of GENERAL MOTORS COMPANY

   Remove the coolant air bleed hose fitting.

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 J-8062  compressor and the EN-50031  compressor, compress the valve spring (4).
3. Remove the valve keys (1).
4. Slowly release the J-8062  compressor and the EN-50031  compressor from the valve spring assembly.
5. Remove the retainer (3).

6. Courtesy of GENERAL MOTORS COMPANY

   Remove the springs.

7. Courtesy of GENERAL MOTORS COMPANY

   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.

   Remove the valve seal. Use the EN-46116  remover. Do not reuse.

8. Courtesy of GENERAL MOTORS COMPANY

   Remove the valve.

9. Remove the remaining valves.

10. Courtesy of GENERAL MOTORS COMPANY

    Remove the cylinder head plugs.