Special Tools
EN-46745
Piston Pin Retainer Remover and Installer
Important: Install the piston onto the connecting rod with the arrow on top of the piston toward the front oriented toward the front of the engine.
Important: The cast boss (1) can be in either or both locations depending on displacement.
- The cast boss (1), on the underside of the piston, must go to the rear of the block.
- The larger feature (1), at the split line located on one side of the connecting
rod, must go to the front of the block.
- Assemble the connecting rod and the piston.
Notice: Install the piston pin retainers correctly in the retaining groove during
assembly in order to avoid engine damage.
- Use the following procedure to assemble the piston pin and the retainer:
4.1. | Coat the piston pin with oil. |
4.2. | Install one side of one piston pin retainer into the retaining groove using
EN-46745
. Rotate the retainer until it is fully seated in the groove. |
4.3. | Install the connecting rod and the piston pin. |
Push the piston pin until it bottoms in the previously installed retainer.
4.4. | Install the second piston pin retainer, using
EN-46745
. |
4.5. | Ensure that the piston moves freely. |
Notice: Use a piston ring expander to install the piston rings. The rings may
be damaged if expanded more than necessary.
- Install the following components of the oil control ring assembly (bottom ring):
5.2. | The lower oil control ring |
5.3. | The upper control ring |
- Install the lower compression ring (second ring). Place the manufacturer's mark facing up.
- Install the upper compression ring (top ring).