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Home >> Buick >> 2008 >> Allure CXL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 3.6L (2 Of 5)) >> On-Vehicle Repair Information (1 Of 2) >> Valve Stem Oil Seal and Valve Spring Replacement - Left Side >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Remove the starter motor. Refer to Starter Motor Replacement (LY7) .
    2. Fig 1: View Of Special Tool EN 46106
    GM945978Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: If the EN 46106  is not installed, the crankshaft may rotate. See Special Tools . If the crankshaft rotates, disassembly and reassembly of the entire camshaft timing system may be required.
  2. Install the EN 46106  in order to prevent crankshaft rotation. See Special Tools .
  3. Remove the camshafts and rocker arms. Refer to Camshaft Replacement - Left Side .
  4. Remove the spark plug from the applicable cylinder. Refer to Spark Plug Replacement .
  5. Install the J 39313  to the applicable cylinder. See Special Tools .
  6. Connect the J 39313  to a compressed air source. See Special Tools .
    7. Fig 2: View Of Installed Valve Spring Compressor Tool
    GM1338337Courtesy of GENERAL MOTORS CORP.
  7. Install the EN 46110  above the applicable cylinder as shown. See Special Tools .
    8. 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.
  8. Tighten the EN 46110  valve spring compressor nut (2). See Special Tools .
    9. Fig 3: View Of Valve Spring Keepers
    GM902903Courtesy of GENERAL MOTORS CORP.
  9. Using the EN 46117  , remove the valve keepers. See Special Tools .
  10. Loosen the EN 46110  valve spring compressor nut. See Special Tools .
  11. Remove the valve spring retainer.
    12. Fig 4: View Of Valve Spring
    GM902899Courtesy of GENERAL MOTORS CORP.
  12. Remove the valve spring.
    13. Fig 5: Identifying Special Tool - EN-46116 & Valve Stem Seal
    GM1338340Courtesy of GENERAL MOTORS CORP.
  13. Use the EN 46116  (1) in order to remove the valve stem seal (2). See Special Tools .
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