axle bearings, need help

Can you see the thrust button by looking down a axle tube? If not get two broom handles, In-cert one on one side all the way into one side of the axle housing. Make sure it is smaller than the axle splines and make sure you seat it all the way in. Next in-cert another broom handle in the other side. If you can push one side in and the broom handle pushes out on the other side than yup you have the thrust buttons in your third member and you need to deal with that.