GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Impala 🢒 Engine 🢒 Engine Mechanical - 3.9L 🢒 Valve Stem Oil Seal and Valve Spring Replacement

Tools Required

    • EN-47823 Valve Spring Compressor Adapter
    • J 22794 Spark Plug Port Adapter
    • J 5892-D Valve Spring Compressor

Removal Procedure

Important: 

   • Before removing 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.
   • Loosen the spark plug, and clean any dirt and/or debris from the spark plug recess area before removing.


    Object Number: 1557721 Size: SH
  1. Remove the spark plug. Refer to Spark Plug Replacement .
  2. Remove the rocker arm. Refer to Valve Rocker Arm and Push Rod Replacement .
  3. Install the J 22794 into the spark plug port. Apply compressed air in order to hold the valve in place.
  4. Using caution so as not to damage the valve spring or valve spring dampener, compress the valve spring using the J 5892-D (1) and the EN-47823 (2).

    5. Object Number: 1665094 Size: SH
  5. Remove the valve spring cap keys.
  6. Remove the valve cap.
  7. Remove the valve spring assembly.
  8. Remove the valve stem oil seal.

Installation Procedure

    Object Number: 1665094 Size: SH
  1. Lubricate the valve stem with clean engine oil.
  2. Install the valve stem oil seal, ensuring the proper seals (intake - black seal and exhaust - brown seal) are installed.
  3. Install the valve spring.
  4. Install the valve cap.

    5. Object Number: 1557721 Size: SH
  5. Using caution so as not to damage the valve spring or valve spring dampener, compress the valve spring using the J 5892-D (1) and the EN-47823 (2).
  6. Install the valve cap keys. If necessary, use grease in order to hold the valve cap keys in place.
  7. Ensure the valve cap keys are seated.
  8. Remove the compressed air and remove the J 22794 from the spark plug port.
  9. Install the rocker arm. Refer to Valve Rocker Arm and Push Rod Replacement .
  10. Install the spark plug. Refer to Spark Plug Replacement .