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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1021 (Engine Mechanical - 8.1L) >> 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 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Lubricate the valve stem and outside diameter of the valve guide seal with clean engine oil.
  2. Lubricate the rotators with clean engine oil.
    IMPORTANT: When installing valve seals, J 43105  must be used to achieve correct installation. Failure to use J 43105  may cause excessive oil consumption.
  3. Install the valve stem oil seal (2) over the valve tip and onto the valve guide using J 43105  . Tap the valve stem seal onto the valve guide until the J 43105  fully seats the seal.
  4. Install the valve spring cap and the spring.
    5. Fig 1: Installing Valve Stem Oil Seal Using J 43105
    GM719126Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: When installing valve springs, the small end of the valve spring must be installed up.
  5. Install the valve spring (3).
  6. Install the valve spring cap (2).
    7. Fig 2: View Of Valve Stem & Components
    GM677779Courtesy of GENERAL MOTORS CORP.
  7. Using J 5892-D  compress the valve spring.
  8. Install the valve stem keys as follows:
    1. Apply a small amount of clean grease to hold the valve stem keys in place.
    2. Carefully release the J 5892-D  . Make sure the valve stem keys do not move.
    3. Remove the J 5892-D  from the valve assembly.
    4. Remove the compressed air from the cylinder being worked on.
    9. Fig 3: Compressing Valve Spring Using J 5892-D
    GM1964Courtesy of GENERAL MOTORS CORP.
  9. Install the spark plug. Refer to Spark Plug Replacement in Engine Controls - 8.1L.
  10. Install the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
    11. Fig 4: View Of Valve Rocker Arms
    GM470899Courtesy of GENERAL MOTORS CORP.
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