Special Tools
EN-49941 Remover / Installer Piston Retainer Ring
For equivalent regional tools, refer to Special Tools .
- Install the connecting rod (3) and the piston pin (2) to the piston (1).
- Install the piston and connecting rod assembly to a bench vise. Use aluminium braces.
- Place the piston pin retainer in the piston pin retainer groove so that the ring gap lays on the notch (2).
- Push the piston pin retainer down with the thumb in the shown position (1) and hold.
- Apply the EN-49941 installer (4) to the piston pin retainer in the position shown (3) and push in direction of the arrow while pushing down with the thumb.
- Move the EN-49941 installer (1) carefully to the position shown while pushing in direction of the arrow until the piston pin retainer engages in the piston pin retainer groove.
- Push down the piston ring retainer to get a proper seat in the groove.
- Place the piston pin retainer in the piston pin retainer groove so that the ring gap lays on the notch (4).
- Push the piston pin retainer down with the thumb in the position shown (1) and hold.
- Apply the EN-49941 installer (3) to the piston pin retainer in the position shown (2) and push in direction of the arrow while pushing down with the thumb.
- Move the EN-49941 installer (2) carefully to the position shown while pushing in direction of the arrow until the piston pin retainer engages in the piston pin retainer groove.
- Push down the piston ring retainer to get a proper seat in the groove.
- Remove the piston and connecting rod assembly from the bench vise.
- Install the piston rings. Use piston ring pliers (1).
- The piston rings must be ordered as followed: Upper compression ring (1) Lower compression ring (2) Piston oil ring with spacer (3), (4)
- The piston ring joints must be positioned 90 degrees to each other. Upper compression ring joint (2) Lower compression ring joint (5) Oil ring joint, upper part (1) Oil ring joint, lower part (4) Oil ring spacer joint (3)