Tools Required

• J43654 Piston Pin Clip Installer

IMPORTANT:  Install the piston onto the connecting rod with the arrow oriented toward the front of the engine.

1. Assemble connecting rod and the piston.
   Fig 1: Assembling Connecting Rod And Piston

   Courtesy of GENERAL MOTORS CORP.
   NOTE: Install the piston pin retainers correctly in the retaining groove during assembly in order to avoid engine damage.
2. Use the following procedure in order to assemble the piston pin and the retainer:
   1. 2.1 Coat piston pin with oil.
   2. 2.2 Using Piston Pin Clip Installer J43654, install one side of one piston pin retainer into the retaining groove. Rotate the retainer until it is fully seated in the groove.
   3. 2.3 Install the connecting rod and the piston pin. Push the piston pin until it bottoms in the previously installed retainer.
   4. 2.4 Install the second piston pin retainer, use insertion tool.
   5. 2.5 Ensure that the piston moves freely.
      Fig 2: Installing Piston Pin And Retainer

      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.
3. Install the following components of the oil control ring assembly (bottom ring):
   1. 3.1 Expander
   2. 3.2 Lower oil control ring
   3. 3.3 Upper control ring
4. Install lower compression ring (second ring). Place the manufacturer's mark facing up.
5. Install upper compression ring (top ring).
   Fig 3: Installing Piston Control Rings

   Courtesy of GENERAL MOTORS CORP.