Piston and Connecting Rod Assemble

Important:  Install the piston onto the connecting rod with the marks (1) oriented toward the front of the engine.

1. Coat the piston pin with engine oil.
   Fig 1: Locating Marks

   Courtesy of GENERAL MOTORS CORP.
2. Push the piston pin into the piston pin bore by hand.
3. Assemble the connecting rod and the piston.
   Fig 2: Installing Piston Pin

   Courtesy of GENERAL MOTORS CORP.

   Important:  Be sure that the end gap of the piston pin snap ring is not aligned with the pin hole cutout portion of the piston.

4. Install new snap rings using a small screwdriver.
   Fig 3: Installing Snap Rings

   Courtesy of GENERAL MOTORS CORP.
   NOTE: Use a piston ring expander to install the piston rings. The rings may be damaged if expanded more than necessary.
5. Install the following components of the oil control ring assembly (bottom ring):
   1. 5.1. The expander
   2. 5.2. The lower oil control ring
   3. 5.3. The upper control ring
6. Install the lower compression ring (second ring). Place the manufacturer's mark facing up.
7. Install the upper compression ring (top ring). Place the manufacturer's mark facing up.
   Fig 4: Installing Piston Rings

   Courtesy of GENERAL MOTORS CORP.