GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Cobalt 🢒 Engine 🢒 Engine Mechanical - 2.0L 🢒 Cylinder Head Disassemble

Tools Required

    • J 8062 Valve Spring Compressor
    • J 36017 Valve Guide Seal Remover
    • J 43963 Valve Spring Compressor (Off Car)

    Object Number: 1451050 Size: SH
  1. Remove the engine coolant temperature sensor.

    2. Object Number: 412474 Size: SH

    Important: 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 and the J 43963 , compress the valve spring.
  3. Remove the valve keys.
  4. Slowly release the J 8062 and the J 43963 from the valve spring assembly.
  5. Remove the retainer.

    6. Object Number: 412475 Size: SH
  6. Remove the spring.

    7. Object Number: 412476 Size: SH

    Notice: 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 seal. Use the J 36017 . Do not reuse.

    8. Object Number: 412477 Size: SH
  8. Remove the valve.
  9. Remove the remaining valves.

    10. Object Number: 412478 Size: SH
  10. Remove the cylinder head plugs.