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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 2.4L) >> Repair Instructions - On Vehicle >> Valve Stem Oil Seal and Valve Spring Replacement >> Removal Procedure

Removal Procedure

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

This procedure is not used in Brazil.

NOTE:

Prevent the crankshaft from rotating clockwise or counterclockwise before using compressed air in the cylinder. Rotation of the crankshaft may cause damage to EN-43653  holding tool.

  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 Replacement (LEA, LUK) .
  3. Install EN-43653  holding tool.
  4. Remove the camshaft. Refer to Intake Camshaft and Valve Lifter Replacement , or Exhaust Camshaft and Valve Lifter Replacement .
    5. Fig 1: Camshaft Roller Followers
    GM2401694Courtesy of GENERAL MOTORS COMPANY
  5. Remove the camshaft roller followers (1).
    6. Fig 2: Valve Spring Compressor Adaptor Set
    GM2401706Courtesy of GENERAL MOTORS COMPANY
  6. Install the EN-43649-10  adaptor set (1) to the front and rear of the cylinder head.
  7. Install the cross bars and locks (2) of the EN-43649  compressor to the valve spring compressor adaptors.
  8. Remove the spark plugs. Refer to Spark Plug Replacement .
  9. Install an air hose adapter into the spark plug hole.
  10. Attach an air hose to the adapter and pressurize the cylinder to 690 kPa (100 psi).
  11. Compress the valve spring using the valve spring compressor (3).
    12. Fig 3: Valve Spring, Keepers And Retainer
    GM2401713Courtesy of GENERAL MOTORS COMPANY
  12. Remove the valve spring keepers (1).
  13. Remove the valve spring (3) and retainer (2).
    14. Fig 4: Valve Guide Seal Remover/Installer
    GM2401716Courtesy of GENERAL MOTORS COMPANY
  14. Use the EN-36017  seal remover (1) to remove the valve seal.
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