This was an interesting piece that I discovered while taking apart the engine. I can't remember seeing one of these out of an engine although I always knew they were in there. This is an oil filter rotor that used centrifugal force to spin the oil through the assembly and continue circulating it. Here is a shot of it on my vice after I used the impact to break all the screws loose. They took more effort than I imagined.
I read a story in which a person thought that his engine might have siezed because of this assembly being clogged up. There is no screen inside of this and I figure that it's purpose is just to move more oil through the engine in addition to the pump which has the screen to filter large sediments from the bottom beneath the clutch. I wouldn't recommend taking this piece apart. I can't imaging anything being stuck inside of it and it's a really simple contraption. Just to emphasize I must repeat that it took some really big hits to loosen the screws that hold this together. There is a pretty big danger of damaging the unit as the vice needed to be tightened a good amount to hold it.
