This is from memory from a set of Dualmatics on my old M38. Have to remove the hub bolts. Unlock the hub with the toggle bars, pull the whole hub flange straight out. The bars that protrude through the outer housing pull out with the cover. Grease those bars and the 'star' flange they interface with. (The 'star flange' is the part on the splines of the axle end). Align and push back into place. Put in bolts. BTW, those hub bolts would never stay tight until I put the 'washers with ears", said ears to be bent up to secure the bolt heads after tight. These hubs are great! No little parts and a positive lock, if you can read the fine print on the edge of the toggle handles and get them both in the right position at the same time!