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Valve Rocker Arm and Push Rods Cleaning and Inspection

WARNING: This page is about a different car, the 2003 GMC Sonoma and 2003 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Important:  Pats that are to be reused must be marked, sorted or organized for assembly.

  1. Mark, sort, or organize the components for assembly. Refer to SEPARATING PARTS  .
  2. Clean the components with cleaning solvent.
    CAUTION: Wear safety glasses in order to avoid eye damage.
  3. Dry the components with compressed air.
  4. Inspect the valve rocker arms bearings for binding or roughness.
  5. Inspect the valve rocker arm pushrod sockets and valve stem mating surfaces. These surfaces should be smooth with no scoring or exceptional wear.
  6. Inspect the rocker arm pedestals and mounting bosses on the cylinder head for damage.
    Fig 1: Inspecting Valve Rocker Arm Pushrod Sockets And Valve Stem Mating Surfaces
    G01977180Courtesy of GENERAL MOTORS CORP.
  7. Inspect the pushrods for worn or scored ends. These surfaces should be smooth with no scoring or exceptional wear.
  8. Inspect the pushrods for bends. Roll the pushrod on a flat surface to determine if the pushrod is bent.
  9. Inspect the pushrod oil passages for restrictions.
    Fig 2: Inspecting Pushrods
    G01977181Courtesy of GENERAL MOTORS CORP.