Piston and Connecting Rod Assemble
Special Tools
EN-49941 Remover / Installer Piston Retainer Ring
For equivalent regional tools, refer to Special Tools .
- NOTE:
Lubricate the piston pin with clean engine oil.
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 aluminum braces.
- WARNING:
Use extreme care when removing snap rings. Always wear adequate eye protection in order to avoid personal injury.
WARNING:Use care when removing or installing the piston retainer ring. Ensure the EN-49941 remover/installer is installed properly onto the retainer ring and that hands and fingers are kept clear from the front of the tool. Otherwise, bodily injury may occur.
NOTE:Notch (2) on right side.
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.
- NOTE:
Push the piston pin retainer down in the position shown (2).
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.
- NOTE:
Notch (4) on left side. EN-49941 installer should be used with left hand.
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.
- NOTE:
Push the piston pin retainer down in the position shown (1).
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).
- NOTE:
Mind the TOP marking on the piston rings.
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)
The EN-49941 installer should be applied in a perpendicular position to the piston pin retainer.
The EN-49941 installer should be applied in a perpendicular position to the piston pin retainer.