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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 721 (Engine Mechanical - 8.1L (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 2002 GMC Yukon XL, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Installing Valve Stem Oil Seal Using J 43105
    GM719126Courtesy of GENERAL MOTORS CORP.
  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 2: Valve Components
    GM677779Courtesy 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 3: Compressing Valve Spring Using J 5892-D
    GM1964Courtesy 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. Install the spark plug.
    10. Fig 4: View Of Valve Rocker Arms
    GM470899Courtesy of GENERAL MOTORS CORP.
  10. Install the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
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