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Home >> Buick >> 2008 >> Allure CXL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (Engine Mechanical - 3.6L (4 Of 5)) >> Off-Vehicle Repair Instructions (2 Of 3) >> Cylinder Head Assemble >> Assemble

Cylinder Head Assemble: Assemble

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Locating Cylinder Head Coolant Threaded Plugs
    GM1210901Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  1. Install the cylinder head coolant threaded plugs.

    Tighten:  Tighten the cylinder head coolant threaded plug to 31 N.m (23 lb ft).

    2. Fig 2: Identifying Cylinder Head Oil Gallery Expansion Plugs
    GM1210891Courtesy of GENERAL MOTORS CORP.
  2. Install the NEW cylinder head oil gallery expansion plugs.
    3. Fig 3: View of Valve Stem Oil Seals With Tool EN 46116
    GM1210887Courtesy of GENERAL MOTORS CORP.
  3. Place the valve stem oil seals onto the guides.
    4. IMPORTANT: NEVER reuse a valve stem oil seal. Always use new seals when assembling the cylinder head.
  4. Mount a new valve stem oil seal using the EN 46116  . See Special Tools .
    5. IMPORTANT: Force should only be applied to the valve spring contact area of the new valve stem oil seal during installation.
  5. Push and twist the valve stem oil seal into position on the valve guide until the seal positively locks on the guide using the EN 46116  . See Special Tools .
  6. Lubricate the valve stem and valve guide ID with clean engine oil GM P/N 12345501 (Canadian P/N 992704) or equivalent.
    7. Fig 4: View Of Valve and Cylinder Head
    GM1210884Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The valve stem oil seal must not come loose from the valve guide when the valve is installed.
  7. Insert the valve into the valve guide until it bottoms on the valve seat.
    8. Fig 5: Identifying Valve Spring & Retainer
    GM1210879Courtesy of GENERAL MOTORS CORP.
  8. Position the valve spring on the spring seat.
  9. Place the valve spring retainer onto the valve spring.
    10. Fig 6: Compressing Valve Spring
    GM1210825Courtesy of GENERAL MOTORS CORP.
    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.
    NOTE: Do not compress the valve springs less than 24.0 mm (0.943 in). Contact between the valve spring retainer and the valve stem oil seal can cause potential valve stem oil seal damage.
  10. Compress the valve spring using the J 8062  and the EN 46119  . See Special Tools .
    11. Fig 7: View Valve Keepers With EN 46117
    GM1210911Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Ensure proper directional placement of valve keepers in the EN 46117  . See Special Tools . The valve keepers must be installed with the tapered end towards the valve stem seal.
  11. With the spring compressed, install the valve keepers into the EN 46117  . See Special Tools .
    12. Fig 8: Identifying Valve Spring Compressor & Adapter
    GM1210829Courtesy of GENERAL MOTORS CORP.
  12. Place the keepers into position by pushing the tool downward and releasing tension on the EN 46119  and the J 8062  . See Special Tools .
  13. Verify that the valve keepers are installed by placing a rag over the valve tip and tapping with a dead-blow hammer. The valve keepers and the spring should remain in place.
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