Piston and Connecting Rod Disassemble

Special Tools 

EN-46745  Piston Pin Clip Remover/Installer

Equivalent regional tools: Special Tools

1. Fig 1: Exploded View Of Piston Rings

   Courtesy of GENERAL MOTORS COMPANY
   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.

   Remove the piston rings (1, 2, 3, and 4) using a piston ring expander. Place each ring in a clean shop towel for storage.

2. Courtesy of GENERAL MOTORS COMPANY

   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.

   Courtesy of GENERAL MOTORS COMPANY

   Using the EN-46745  Piston Pin Clip Remover/Installer, remove the piston pin retainers by using the removal access notch (1) in the side of the piston (3). Discard the piston pin retainers (1).

3. Slide the piston pin (2) out of the piston (3). The piston will disconnect from the connecting rod (4).