Piston and Piston Pin Installation Procedure
WARNING: This page is about a different variant/trim than selected.
- The piston is directional and must be installed in the engine block in the proper direction. The dot on the top of the piston must face the front of the engine.
- The piston is model dependent and may not appear exactly as shown.
- Lubricate the piston pin bores in the piston and the connecting rod with GM prelube lubricant. Refer to Adhesives, Fluids, Lubricants, and Sealers for recommended lubricant.
- Assemble the piston and piston pin to the connecting rod. Properly orient the piston when reusing a marked connecting rod.
- Align the piston pin bore with the connecting rod pin bore.
- Slide the piston pin into the piston and the connecting rod.
- Install NEW piston pin retainers using the EN-46745 remover/installer. Align the EN-46745 remover/installer to the notch (1) in the piston.
- Ensure that the piston pin retainers are fully seated in their grooves.
- Repeat these procedures for the remaining pistons.
NOTE:
NOTE:
New piston pin retainers must be used. Never reuse the piston pin retainers.