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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 148 (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).
  4. Install the valve spring (4).
  5. Install the valve spring cap (3).
    Fig 1: Installing Valve Stem Oil Seal, Valve Spring & Components
    G02078496Courtesy 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 2: Compressing Valve Spring Using J 38606
      G02078497Courtesy of GENERAL MOTORS CORP.
  8. Remove J 22794  from the spark plug port.
    Fig 3: Removing J 22794 From Spark Plug Port
    G02078498Courtesy of GENERAL MOTORS CORP.
    CAUTION: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
  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.
    Fig 4: Installing Spark Plug
    G02078499Courtesy of GENERAL MOTORS CORP.
  13. Install the valve rocker arm. Refer to Valve Rocker Arm and Push Rod Replacement .
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