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 (TDC) top dead center. This will eliminate the possibility of the valve accidentally falling inside the cylinder.
• Break the spark plug loose, and clean any dirt and debris from the spark plug recess area before removing.

1. Remove the spark plug.
2. Remove the rocker arm. Refer to Valve Rocker Arm & Push Rod - Replacement .
3. Install the J 22794  into 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: Valve Spring Compressor
Courtesy of GENERAL MOTORS CORP.
5. Compress the valve spring with the J 38606  .
   Fig 2: Compressing Valve Spring Using J 38606

   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. Replace the spring if it is damaged.
10. Remove the spring seat/valve stem oil seal.
    Fig 3: Valve Spring Seat/Valve Stem Oil Seal

    Courtesy of GENERAL MOTORS CORP.