Team, You can do it either way. As was mentioned, lift the frame or as you said, all the same in the end. Take the nuts off of the U-bolts & center bolt (a little heat will help). Jack up the frame high enough to let the center bolt out (or lower the axle)or roll the axle enough to let it past. You can reuse the bolts (you will need to cut a little off of the center bolt once it is reinstalled so the top plate goes back on) just clean the treads good so the nuts go down on farther without getting jambed. Lorne