Piston and Connecting Rod Assemble

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

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
1	Connecting Rod NOTE: Align the connecting rod and piston with the features used to identify the orientation of the component relative to the front of the engine.
2	Piston Procedure Locate the alignment feature or marks on the connecting rod. Locate the alignment feature or marks on the piston. Ensure that the alignment features are in the correct location when assembling the components.
3	Piston Pin
4	Piston Pin Retainer CAUTION: Install the piston pin retainers correctly in the retaining groove during assembly in order to avoid engine damage. Procedure Coat the piston pin with oil. Install one side of one piston pin retainer into the retaining groove using EN-49941 installer. Rotate the retainer until it is fully seated in the groove. Install the piston pin. Push the piston pin until it bottoms in the previously installed retainer. Install the second piston pin retainer, using EN-49941 installer. Ensure that the piston moves freely. Special Tools EN-49941 Piston Pin Retainer Remover and Installer For equivalent regional tools, refer to Special Tools .
5	Piston Oil Ring Rail CAUTION: Use a piston ring expander to install the piston rings. The rings may be damaged if expanded more than necessary.
6	Piston Oil Ring Spacer NOTE: Properly orient the oil ring spacer as shown before installation. The ends of the spacer must be facing toward the top of the piston.
7	Piston Oil Ring Rail
8	Piston Compression Lower Ring
9	Piston Compression Upper Ring Procedure Once the rings are installed, set the ring gaps as shown. Use the piston location arrow for reference.