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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Mechanical - 5.7L (LS6)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Stem Oil Seal and Valve Spring Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Clean the cylinder head valve spring seat area.
  2. Install the valve stem oil seal and shim (2), tapping it into position using an appropriate size socket and hammer. Install the oil seal and shim until it bottoms on the head.
    Fig 1: View Of Valve Spring & Stem Components
    GM1378970Courtesy of GENERAL MOTORS CORP.
    3. Fig 2: Compress The Valve Spring (Cylinder Head Installed) Using Special Tools
    GM218211Courtesy of GENERAL MOTORS CORP.
  3. Install the valve spring to the J 38606 .
  4. Compress the valve spring using the J 38606 .
  5. Install the valve spring to the cylinder head.
    6. Fig 3: View Of Valve Spring & Stem Components
    GM1378970Courtesy of GENERAL MOTORS CORP.
  6. Install the valve spring cap (4).
  7. Install the valve stem keys (5).
    • Use grease to hold the keys (5) in place and remove J 38606 .
    • Make sure the keys (5) seat properly in the groove of the valve stem.
    • Carefully release the valve spring pressure, making sure the valve keys stay in place.
    • Remove the J 38606 .
    • Tap the end to the valve stem with a plastic faced hammer to seat the keys, if necessary.
    8. Fig 4: Identifying J 22794
    GM353918Courtesy of GENERAL MOTORS CORP.
  8. Disconnect and remove the air supply from the J 22794  . See Special Tools and Equipment .
  9. Remove the J 22794  from the spark plug hole. See Special Tools and Equipment .
    10. Fig 5: View Of Spark Plug And Sparkplug Seat
    GM14824Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  10. Install the spark plug by hand until snug.
  11. Tighten the spark plug.

    Tighten:  Tighten the spark plugs to 15 N.m (11 lb ft).

    12. Fig 6: Spark Plug Wire Routing
    GM74069Courtesy of GENERAL MOTORS CORP.
  12. Install the spark plug wire to the spark plug.
  13. Install the valve rocker arms. Refer to Valve Rocker Arm and Push Rod Replacement .
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