Assembly lube is also applied to the pin boss of the piston. One of the pin retaining circlips is also installed at this point.
The rings are compressed with a special tool and the piston is inserted into the bore.
The piston is pushed down and rotated until it lines up with the small end of the rod and this assembly port.
The piston pin is installed through this port.
A special tool is used to put the pin all the way in and seat it.
Next, the other pin retaining circlip is installed.