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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1877 (Engine Mechanical - 2.4L (Lat)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Stem Oil Seal and Valve Spring Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Prevent the crankshaft from rotating clockwise or counter-clockwise before using compressed air in the cylinder. Rotation of the crankshaft may cause damage to J 43655  .
  1. If equipped, with a manual transmission leave the transmission in first gear with the vehicle on the ground and the parking brake set.
  2. If equipped, with an automatic transmission, remove the starter. Refer to Starter Motor Replacement (2.4L (LAT)) .
  3. Install J 43653  .
    4. Fig 1: Identifying Camshaft Roller Followers
    GM758358Courtesy of GENERAL MOTORS CORP.
  4. Remove the camshaft. Refer to Intake Camshaft and Lifter Replacement  or Exhaust Camshaft and Lifter Replacement .
  5. Remove the camshaft roller followers.
    6. Fig 2: View Of J 43649 Valve Spring Compressor
    GM1675266Courtesy of GENERAL MOTORS CORP.
  6. Install the front section of the J 43649  to the second camshaft cover bolt hole. See Special Tools .
    7. Fig 3: View Of J 43649 Valve Spring Compressor
    GM1675271Courtesy of GENERAL MOTORS CORP.
  7. Install the remaining parts of the J 43649  to the cylinder head. See Special Tools .
  8. Remove the spark plugs. Refer to Spark Plug Replacement .
    9. Fig 4: View Of Air Hose Adaptor
    GM758363Courtesy of GENERAL MOTORS CORP.
  9. Install an air hose adapter into the spark plug hole.
  10. Attach an air hose to the adapter
  11. Using the compressed air, pressurize the cylinder to 690 kPa (100 psi).
  12. Compress the valve spring using the J 43649  . See Special Tools .
    13. Fig 5: Identifying Valve Spring Keepers
    GM1403900Courtesy of GENERAL MOTORS CORP.
  13. Remove the valve spring keepers.
  14. Remove the valve spring retainer.
    15. Fig 6: Identifying Valve Springs
    GM1403902Courtesy of GENERAL MOTORS CORP.
  15. Remove the valve spring.
    16. Fig 7: View Of J 36017 & Valve Seal
    GM758364Courtesy of GENERAL MOTORS CORP.
  16. Using the J 36017  remove the valve seal.
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