GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1400021  Size: SH
  1. Apply a liberal amount of lubricant to the pivot pocket (1), roller (2) and valve slot (3) areas of the valve rocker arm. Refer to Adhesives, Fluids, Lubricants, and Sealers for the recommended lubricant.

  2. Object Number: 902907  Size: SH

    Note: The valve rocker arm must be positioned squarely on the valve tip so that the full width of the roller will completely contact the camshaft lobe. If the valve rocker arm are being reused you must put them back in their original location.

  3. Place the valve rocker arms in position on the valve tip and the valve lifters.
  4. The rounded head end of the valve rocker arm goes on the valve lifter while the flat end goes on the valve tip.
  5. Clean the camshaft journals and carriers with a clean, lint-free cloth.