Removal Procedure

Important: 

• Before you remove the valve locks, rotate the engine so that the piston in the cylinder you are working on is at top dead center (TDC). This will eliminate the possibility of the valve accidentally falling inside the cylinder.
• Break the spark plug loose, and clean any dirt or debris from the spark plug recess area before removing.
• Do not remove the spark plug when the engine is hot.

1. Remove the spark plug from the cylinder that is being serviced. Refer to SPARK PLUGS in Engine Performance - Removal and Installation.
2. Remove the rocker arm. Refer to VALVE ROCKER ARM AND PUSH ROD REPLACEMENT  .
3. Install the J 22794  to the spark plug port. Apply compressed air in order to hold the valves in place.
4. Install the J 38606  on the valve spring.
   Fig 1: Compressing Valve Spring By J 38606 (1 Of 2)

   Courtesy of GENERAL MOTORS CORP.
5. Compress the valve spring with the J 38606  .
   Fig 2: Compressing Valve Spring By J 38606 (2 Of 2)

   Courtesy of GENERAL MOTORS CORP.
6. Remove the valve locks.
7. Remove the valve cap.
8. Remove the valve spring.
9. Inspect the valve spring for damage. Refer to CYLINDER HEAD CLEANING AND INSPECTION  .
10. Remove the valve stem oil seal.
    Fig 3: Removing Valve Stem Oil Seal

    Courtesy of GENERAL MOTORS CORP.