Nope.  You can simply unbolt the cv joint from the back side and the entire hub will come out with the arm.

Z

Sent from my iPad

On Jun 28, 2013, at 13:31, Jim Felder <jim.felder@GMAIL.COM> wrote:

> Does the axle nut need to come off to remove the trailing arm? I see lots
> of references to that spread around the interwebs as well as how-to books.
> 
> Just wondering.
> 
> Jim