Great write up...I want to take apart my automatic hub to grease them up but it says in the Service Manual (FA p.19) to replace the O ring and snap ring but does not give any sizes.
I went to Nissan and they were dumbfounded as usual but I got the part numbers, they told me they only sell the entire hub. It seems the O ring is part 40250E and the Snap Ring is 38514. If you could help me with replacement sizes, since you might still have your original still in parts, it would be greatly appreciated. Thanks