[Trueoo7]

The spanner nut (better description would be ring) is located at the top of the rear coil spring. You cannot see all of them, but there is four notches in this ring at 90deg increments. There is a special tool that is used to turn the ring, it looks like a half moon with a protrusion at the end to fit in the notches. If you do it as stated above and no weight or pressure on the spring you could almost turn the ring by hand if its not rusted. I'm not sure how you size the tool to the ring though but they are cheap and if one doesn't work get another one. Hope this helps