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Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Engine Mechanical - 4.6L (LH2) - 2 Of 5) >> On-Vehicle Repair Instructions (Part 2) >> Valve Stem Oil Seal and Valve Spring Replacement - Right Side >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Remove the right camshafts. Refer to Camshaft Replacement - Right Side .
  2. Remove the starter. Refer to Starter Motor Replacement (LH2) .
    3. Fig 1: View Of EN 46326 Installed To Engine Block
    GM1275654Courtesy of GENERAL MOTORS CORP.
  3. Install the EN 46326  (1).
    4. NOTE: Clean the spark plug recess area before removing the spark plug. Failure to do so could result in engine damage because of dirt or foreign material entering the cylinder head, or by the contamination of the cylinder head threads. The contaminated threads may prevent the proper seating of the new plug. Use a thread chaser to clean the threads of any contamination.
  4. Remove the spark plug from the cylinder being worked on.
    5. Fig 2: View Of Base Plate Installed Over The Spark Plug Hole For Changing Valve Stem Seal
    GM650537Courtesy of GENERAL MOTORS CORP.
  5. Install the base plate of the J 44211  (2) over the spark plug hole of the cylinder to be serviced.
  6. Install the J 39313  (1) in the spark plug hole.
  7. Apply constant air pressure to the J 39313  (1) in order to keep the valve closed.
  8. Install the arm and swivel nut of the J 44211  (2) over the stud corresponding to the valve to be serviced.
    9. CAUTION: Refer to Compressed Valve Spring Caution .
  9. Tighten the swivel nut of the J 44211  (2) down only enough to allow access for removal of the valve locks.
  10. Use a magnet to remove the valve stem locks.
  11. Loosen the swivel nut of the J 44211  (2) and swing the arm away from the valve spring retainer.
  12. Remove the valve spring retainer and valve spring.
    13. Fig 3: Using J 38820 To Replace Valve Seal
    GM616165Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The valve stem seal should not be removed unless replacement is required.
  13. Use the J 38820  in order to grip the seal. Remove the seal by exerting a twisting, pulling motion. Discard the old valve stem seal.
  14. Inspect and measure the valve spring. Refer to Valve Spring Inspection and Measurement .
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