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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (Engine Mechanical - 4.6L - 1 Of 4) >> On-Vehicle Repair Instructions (1 Of 2) >> Valve Stem Oil Seal and Valve Spring Replacement - Right Side >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the right camshafts. Refer to Camshaft Replacement - Right Side .
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
    3. Fig 1: View Of Brace Between The Engine Oil Pan And The Transaxle Case
    GM333127Courtesy of GENERAL MOTORS CORP.
  3. Remove the brace between the engine oil pan and the transaxle case.
  4. Remove the torque converter cover. Refer to Torque Converter Cover Replacement .
    5. Fig 2: Locating Flywheel Holder J 44214
    GM650536Courtesy of GENERAL MOTORS CORP.
  5. Install the J 44214  (1). See Special Tools .
  6. Lower the vehicle.
    7. 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.
  7. Remove the spark plug from the cylinder being worked on.
    8. Fig 3: View Of Base Plate Installed Over The Spark Plug Hole For Changing Valve Stem Seal
    GM650537Courtesy of GENERAL MOTORS CORP.
  8. Install the base plate of the J 44211  (2) over the spark plug hole of the cylinder to be serviced. See Special Tools .
  9. Install the J 39313  (1) in the spark plug hole. See Special Tools .
  10. Apply constant air pressure to the J 39313  (1) in order to keep the valve closed. See Special Tools .
  11. Install the arm and swivel nut of the J 44211  (2) over the stud corresponding to the valve to be serviced. See Special Tools .
    12. CAUTION: Refer to COMPRESSED VALVE SPRING CAUTION .
  12. Tighten the swivel nut of the J 44211  (2) down only enough to allow access for removal of the valve locks. See Special Tools .
  13. Remove the valve locks. A magnet is the most suitable tool for this activity.
  14. Loosen the swivel nut of the J 44211  (2) and swing the arm away from the valve spring retainer. See Special Tools .
  15. Remove the valve spring retainer and valve spring.
    16. Fig 4: 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.
  16. Use the J 38820  in order to grip the seal. See Special Tools . Remove the seal by exerting a twisting, pulling motion. Discard the old valve stem seal.
  17. Inspect and measure the valve spring. Refer to Valve Spring Inspection and Measurement .
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