Was crawling around under a Disco 1 this lunchtime. There is an odd 'wheel' thing mounted near the bottom of the steering coloumn and near the end of the steering damper. It is about 6" across and 1" thick, looks heavy and didn't turn when I touched it.... Looked almost as if it was designed to rub against something. Looked odd but also as if it were meant to be there... There isn't one on my 90 and they are meant to have pretty much the same running gear underneath...
What is it and why is it there?
Thanks,
M