First I thought this was the truest expression of tetsudou mania I'd seen in a while--someone noticed that EF510-1 was taken to Umekoji (from Suita, not its home base of Toyama) to be turned 180 degress. Is this for wheel wear? Or maybe for repair purposes, as it wasn't driven there under its own power? But then, it seems common to use a DE10 or whatever to move other locos around. Handy having Umekoji available, else they'd have wye it somewhere.
http://railf.jp/news/2015/01/23/163000.html