LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Mechanical - 6.6L - On Vehicle Repair Instructions) >> On-Vehicle Repair Instructions >> Valve Stem Oil Seal and Valve Spring Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    NOTE: Air pressure should remain applied to the cylinder for installation.
  1. Install the valve spring lower seat.
  2. Install the valve stem seal using J 44640  . See Special Tools .
    Fig 1: Installing Valve Stem Seal Using J 44640
    GM663571Courtesy of GENERAL MOTORS CORP.
  3. Install the valve spring (3), the painted end of the valve spring goes toward the cylinder head.
    Fig 2: Identifying Valve Components
    GM663504Courtesy of GENERAL MOTORS CORP.
  4. Install the valve spring upper seat (2).
    5. CAUTION: Compressed valve springs have high tension against the valve spring compressor. Valve springs that are not properly compressed by or released from the valve spring compressor can be ejected from the valve spring compressor with intense force. Use care when compressing or releasing the valve spring with the valve spring compressor and when removing or installing the valve stem keys. Failing to use care may cause personal injury.
    Fig 3: Compressing Valve Spring Using J 44646
    GM702702Courtesy of GENERAL MOTORS CORP.
  5. Using J 44646  compress the valve spring. See Special Tools .
  6. Install the valve keys to the valve stem.
    7. NOTE: The valve stem keys must correctly seat in the valve spring cap. Engine damage may occur by not installing properly.
  7. Carefully release the valve spring pressure. Make sure the valve keys stay in place.
  8. Continue to install the 3 remaining valve stem seals for the cylinder.
  9. Release the compressed air holding the valves in place.
  10. Remove J 26999-20  (1) from the glow plug hole. See Special Tools .
    Fig 4: Removing J 26999-20 & J 26999 From Glow Plug Hole
    GM702726Courtesy of GENERAL MOTORS CORP.
  11. Continue to replace the valve stem seals on the remaining cylinders using the above procedures.
  12. Install the glow plug. Refer to Glow Plug Replacement - Bank 1 or Glow Plug Replacement - Bank 2 .
  13. Install the valve rocker arm shaft, the valve bridges, and the push rods. Refer to Valve Rocker Arm, Shaft, and Push Rod Replacement .
  14. Install the upper and lower fan shroud. Refer to Fan Shroud Replacement - Lower and Fan Shroud Replacement - Upper (w/RPO HP2) or Fan Shroud Replacement - Upper (Automatic Transmission - Diesel) or Fan Shroud Replacement - Upper (Manual Transmission - Diesel) .
scientia non olet · About LEMON Manuals