YM 2020D - Front Axle Leak - Gasket part number needed

[winston1]

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[AaronM]

I'm interested in your version Aaron ....my concern is the inner portion of this is 113mm assuming this from the measurements of the gasket. the one Winston listed is 115mm....wont that just flop off?

Yes our version would be very loose also. The minimum diameter for ours is 114.88mm. If yours is 113mm then, most likely, a previous owner had the same problem and had the casting turned down to get to smooth metal again. I have seen that many times on those knuckles. They really have a hard life with dirt getting trapped there and acting like sandpaper wearing into the casting.

Is there any visible numbers on your old seal? To make that work they would have needed to replace the seal with something like a 113x145 seal. In theory you could find a 113mm sleeve and a 113x145 seal and make it work again. Or have a local machine shop build it back up and turn it back down to 115mm.