GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Aveo 🢒 Engine 🢒 Engine Mechanical - 1.5L 🢒 Valve Rocker Arm Cleaning and Inspection

Inspection Procedure

    Warning: Refer to Safety Glasses Warning in the Preface section.


    Object Number: 1241764 Size: SH
  1. Inspect valve stem tip wear.
  2. Inspect the valve keeper grooves and oil seal grooves for chips and wear.
  3. Inspect the valves for burns or cracks.
  4. Inspect the valve stem for burrs and scratches.
  5. Inspect the valve stem. The valve stem must be straight.
  6. Inspect the valve face for grooving. If the groove is so deep the refacing would result in a sharp edge, replace the valve.

    7. Object Number: 1241766 Size: SH
  7. Inspect the valve spring. If the valve spring ends are not parallel, replace the valve spring.
  8. Measure the valve spring height. Refer to Engine Mechanical Specifications. If the valve spring height does not match the specifications, replace the valve spring.

Cleaning Procedure

    Warning: Refer to Safety Glasses Warning in the Preface section.


    Object Number: 1241767 Size: SH
  1. Clean the cylinder head.
  2. Clean the valve guides.
  3. Clean all of the threaded holes.
  4. Clean the valves of carbon, oil, and varnish.