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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 855 (Engine Mechanical - 4.8L, 5.3L & 6.0L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Stem Oil Seal and Valve Spring Replacement >> Installation Procedure

Installation Procedure

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  1. Clean the cylinder head valve spring seat and/or shim area.
  2. Lubricate the valve guide and valve stem oil seal with clean engine oil.
  3. Install the valve stem oil seal and shim (1, 5).
    Fig 1: Installing Valve Stem Oil Seal & Shim
    G02116395Courtesy of GENERAL MOTORS CORP.
  4. Install the valve spring (4).
  5. Install the valve spring cap (3).
    Fig 2: Installing Valve Spring & Cap
    G02116396Courtesy of GENERAL MOTORS CORP.
  6. Compress the valve spring using the J 38606  .
  7. Install the valve keys.
    • Use grease in order to hold the valve keys in place.
    • Make sure the keys seat properly in the groove of the valve stem.
    • Carefully release the valve spring pressure, making sure the valve keys stay in place.
    • Remove the J 38606  .
    • Tap the end of the valve stem with a plastic faced hammer to seat the keys, if necessary.
    Fig 3: Compressing Valve Spring Using J 38606
    G02116397Courtesy of GENERAL MOTORS CORP.
  8. Remove the J 22794  from the spark plug port.
    Fig 4: Removing J 22794 From Spark Plug Port
    G02116398Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  9. Hand start the spark plug.

    Tighten 

    Tighten the spark plug to 15 N.m (11 lb ft).

  10. Install the spark plug wires at the ignition coil.
  11. Install the spark plug wire to the spark plug.
  12. Inspect the wires for proper installation:
    • Push sideways on each boot in order to check for proper installation.
    • Reinstall any loose boot.
  13. Install the rocker arm. Refer to VALVE ROCKER ARM AND PUSH ROD REPLACEMENT  .
    Fig 5: Installing Spark Plug Wires At Ignition Coil
    G02116399Courtesy of GENERAL MOTORS CORP.
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