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Home >> Buick >> 2004 >> Century Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 134 (Engine Mechanical - 3.8L) >> 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 car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT:
    • Use hand pressure to install the valve stem oil seal.
    • The color of the replacement seal may not be the same color as the original seal. Install the seals in their correct location based on GM part and package description. Make sure that the seal is fully seated on the valve guide.
  1. Place the oil seal over the stem until the seal begins to contact the valve guide.
  2. Use the J 42863  to install the valve stem oil seal over the valve guide.
  3. Fig 1: Installing Valve Stem Oil Seal Over Valve Guide Using J 42863
    GM40071Courtesy of GENERAL MOTORS CORP.
  4. Install the J 38606  on the valve spring.
  5. Fig 2: Identifying J 38606 & Valve Spring
    GM406033Courtesy of GENERAL MOTORS CORP.
  6. Compress the valve spring using the J 38606  .
  7. Install the valve spring and cap.
  8. Fig 3: Compressing Valve Spring
    GM190527Courtesy of GENERAL MOTORS CORP.
  9. Install the valve locks.
  10. Release the valve spring.
  11. IMPORTANT: Ensure that the valve locks are seated.
  12. Release the air pressure, and remove the J 23590  .
  13. Fig 4: Identifying J 23590
    GM406031Courtesy of GENERAL MOTORS CORP.
  14. Install the spark plug. Refer to Spark Plug Replacement in Engine Controls - 3.8L.
  15. Install the push rods and the valve rocker arms. Refer to Valve Rocker Arm and Push Rod Replacement .
  16. Install the left or the right valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement - Left  or Valve Rocker Arm Cover Replacement - Right .