ok. my LGT145 has large nuts on the end of the axle. My MTD 990 has the snap rings, but the hub is more flat instead of the cone shape of the hub I see in your pictures.
maybe its a difference in the year, or the style of wheel that came on it that makes the difference.
that's all I got, I hope I helped.
ps, if the filter unit I see in the picture is attached to the hydro on the axle, MTD makes sense in that my 990 has the same kind of spin on filter for the hydraulic system.
Edited by mopargoob, September 26, 2013 - 06:34 PM.