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2015 MSU 500 - Oil problem has me stumped

CDT540

By CDT540
in Massimo UTV SxS Forum

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CDT540 Rookie

CDT540

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Just bought a used 2015 MSU 500.  I am in the process of replacing all the fluids and generally going over everything.  I pulled the outer plastic clutch cover off and oil started dripping out.  Oil was everywhere, a huge mess.  I thought for sure I had a bad seal on the clutch or secondary.  So I removed the clutch and secondary CVT so I could get a look at the seals and they both were dry as a bone.  The only two dry spots.  Now I  am stumped.  If oil did not get into the by way of the two shaft seals, how on earth could it have gotten in?  

Thanks

Chris

IMG_2286.jpg

IMG_2285.jpg

  • 3 weeks later...
Lucas Lenartowicz Rookie

Lucas Lenartowicz

Posted
Posted

Have you checked out the vent that from the top of the crank case to the air box? Except that is on the left hand side I believe unless they changed it (we have a 2008 hisun 700 utv) but I heard that there used is an air/oil separator there and in our case it was missing/destroyed and that led to oil splashing everywhere. I just connected the two ends of the air tubes without that separator and it works fine. Also on our hisun under that fan cover there is a little timing window that unscrews so maybe that is missing in your case. Just ideas as I heard somewhere that hisun makes the engines for massimo. But it may be a different setup as your pics do not look too familiar to me 🙃

CDT540 Rookie

CDT540

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Well I cleaned everything up and and replaced the wet clutch, outer clutch and belt.  I have been driving it around the neighborhood without the outer cover on so I could keep an eye on things and all seems to be good and dry.   I don't see how it could create the mess but one thing that was amiss was the oil filter wasn't even finger tight.

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