Piston And Connecting Rod Disassemble

WARNING: This page is about a different variant/trim than selected.

Fig 1: Piston and Connecting Rod

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedure NOTE: Many internal engine components will develop specific wear patterns on their friction surfaces. Components MUST be separated, marked, or organized in a way to ensure installation to their original location and position. Take precautions in order to prevent interchanging of parts. Tag or mark each part immediately when removed. Indicate location, direction, or orientation when necessary.
1	Piston Compression Upper Ring WARNING: Handle the piston carefully. Worn piston rings are sharp and may cause bodily injury. NOTE: Use a suitable tool to expand the rings. The piston rings must not be reused.
2	Piston Compression Lower Ring
3	Piston Oil Ring Rail
4	Piston Oil Ring Spacer
5	Piston Oil Ring Rail
6	Piston Pin Retainer WARNING: Use extreme care when removing snap rings. Always wear adequate eye protection in order to avoid personal injury. NOTE: Two retainers hold the piston pins in place. Ensure that the piston pin is not damaged. Do not reuse the retainers. Procedure Remove the piston pin retainers using the EN-49941 remover. Special Tools EN-49941 Piston Pin Retainer Remover and Installer For equivalent regional tools, refer to Special Tools .
7	Piston Pin
8	Piston NOTE: An arrow/dot showing proper piston orientation is located on the top of the piston.
9	Connecting Rod NOTE: Features such as a raised section on the connecting rod may help identify the correct orientation relative to the front of the engine. Ensure that each connecting rod has been clearly marked upon removal to identify the cylinder, orientation, and direction of both the rod and cap.