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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 37 (Engine Mechanical - 6.6L - Off Vehicle Repair Instructions (2 Of 3)) >> Off-Vehicle Repair Instructions (Part 2) >> Cylinder Head Assemble

Cylinder Head Assemble

WARNING: This page is about a different variant/trim than selected.

Tools Required

    IMPORTANT: Lubricate the valve stem with clean engine oil before installing.
  1. Install the valves into the cylinder head.
    2. Fig 1: View Of Valves & Cylinder Head
    GM663570Courtesy of GENERAL MOTORS CORP.
  2. Install the valve spring lower seat.
  3. Install the valve stem seal using J 44640  . See Special Tools .
    Fig 2: Installing Valve Stem Seal Using J 44640
    GM663571Courtesy of GENERAL MOTORS CORP.
  4. Install the valve spring with the painted end towards the cylinder head.
  5. Install the valve spring upper seat.
  6. Use the J 8062  to compress the valve spring.
    Fig 3: Compressing Valve Spring Using J 8062
    GM663501Courtesy of GENERAL MOTORS CORP.
  7. Install the valve keys.
  8. Remove the J 8062  from the cylinder head.
  9. Measure the valve installed height using a ruler. Measure from the base of the valve spring to the top of the valve. Refer to Engine Mechanical Specifications .
    Fig 4: Measuring Valve Spring Installed Height
    GM64315Courtesy of GENERAL MOTORS CORP.
  10. Install the remaining valves, springs, and other components.
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