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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 597 (Engine Mechanical - 3.1L V6 - VIN (J) Unit Repair) >> Repair Instructions >> Cylinder Head Assemble

Cylinder Head Assemble

WARNING: This page is about a different car, the 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required: J 38606  Valve Spring Compressor

NOTE: Use oversize valve stem seals if you install oversize valves.
  1. Lubricate the valve stem with clean engine oil.
  2. Install the valves.
  3. Lightly lap the reconditioned valves into the valve seat.
  4. Install the valve stem oil seals.
  5. Install the valve springs.
  6. Install the valve spring caps.
    Fig 1: Valve Stem Components
    G01763854Courtesy of GENERAL MOTORS CORP.
  7. Compress the valve springs using the J 38606.
  8. Install the valve spring cap keys. Hold the valves in place with grease, if necessary.
  9. Release the valve springs.
  10. Ensure that the valve locks are seated.
  11. Measure valve spring installed height.
  12. If the valve spring installed height is not within specifications install 0.25 mm (0.010 in) rocker arm shims as needed. If more than 2 shims are needed replace the cylinder head or valve.
    Fig 2: Installing Valve Springs
    G01763855Courtesy of GENERAL MOTORS CORP.
    NOTE: In order to avoid damage, install the spark plugs after the cylinder head has been installed on the engine.
  13. Install the fuel line bracket.
  14. Install the fuel line bracket bolt or stud.

    Tighten: 

    Tighten the fuel line bracket bolt or stud to 50 N.m (37 lb ft) 

    Fig 3: Fuel Line Bracket
    G01763856Courtesy of GENERAL MOTORS CORP.
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