Hi, I did this job on my '68 3400 last summer. I was able to remove the nut by hitting it with a hammer and cold chisel to turn it. It cut into the nut a little, but not too bad. Once I had the nut off, I took it to a shop and the guy pressed the axles out for me. He didn't have to remove any studs, just blocked it up with some steel scraps to get it in position. On assembly, I used an automotive wheel bearing socket that I bought from amazon . com for about 10 bucks. I cut the back out of the socket, and also had to cut some slits in the sides since the socket was made for a hex nut with more rounded corners. I slipped the bearing onto the axle enough to get the nut started, then used the nut to drive the bearing home. I turned the nut using a big pipe wrench on the socket, and a prybar wedged between two lug bolts on the hub. I cranked it down as hard as I could. No torque wrench, but I tried to tighten it further with my hammer and chisel method and it didn't budge so it was at least as tight as it was before I started. No problems with it so far. You can find the socket I used on amazon under "Powerbuilt 647068 2-3/4-Inch 6-Point Rounded Hex Wheel Bearing Locknut Socket". Worked for me. Best of luck!
This post was edited by Jetbird at 18:20:41 02/23/13.
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