CV Shaft issues on my 2010 Sportsman
I have been racking my brain on this one for a while and can't seem to find a good explanation.
I have a '10 Sportsman 500, stock only and my 2nd CV shaft on the right rear is on its way out. I had the first one fail about a year and half ago. The bike is mainly used for snow plowing and some mild trail riding. I am pretty easy on it for the most part other than some hard plowing in the winter.
I replaced the first CV shaft with an OEM replacement. I tore into the bad one a found the outer housing of the inner cv joint worn and heat checked. It was def bad. Now the replacement is making the same grinding sound as this one. The boots are still good.
I can't seem to figure out why I have gone through 2 shafts in 3 years. Rear tranny/dif fluid was replaced in 2011. Nothing appeared to be damaged or bent on the right rear chassis/suspension when changing out the first one and I haven't ridden it much. Just bad parts? Or do I have other issues? Any help would be appreciated.