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Hydraulic Valve Lash Adjuster Arm Cleaning and Inspection

  1. GM3986280Courtesy of GENERAL MOTORS COMPANY

    Inspect the hydraulic valve lash adjuster arm roller (1) for the following:

    • Flat spots
    • Excessive scoring and pitting
    • Ensure the roller spins freely
  2. Inspect the hydraulic valve lash adjuster arm valve tip area (2).
  3. Inspect the hydraulic valve lash adjuster pivot area (3).
  4. Replace the hydraulic valve lash adjuster arms as necessary.
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