GM Service Manual Online
For 1990-2009 cars only

Special Tools

EN 46745 Piston Pin Clip Remover/Installer

For equivalent regional tools, refer to Special Tools.


    Object Number: 1316504  Size: SH

    Caution: You must use a piston ring expander to remove and install the piston rings. Only expand the rings far enough to fit over the piston lands. If the rings are overexpanded, the top ring will shatter and the others will distort.

  1. Remove the piston rings using a piston ring expander. Place each ring in a clean shop towel for storage.

  2. Object Number: 1210796  Size: SH

    Note: 

       • The connecting rod is non-directional and may be assembled/reassembled to the piston in either direction.
       • DO NOT reuse the piston pin retainers.

  3. Using the EN 46745 remover , remove the piston pin retainers by using the removal access notch (1) in the side of the piston. Discard the piston pin retainers.

  4. Object Number: 1210818  Size: SH
  5. Slide the piston pin out of the piston. The piston will disconnect from the connecting rod.