Morning all,under the o/s front corner of my V8 disco1,between the long radius arm and the axle diff. housing,there is a strange vertical disc shaped thing.Though shown on the underbody photo in the haynes manual,it is not named,and (as usual) there is no mention of it in the manual. Anyone know what its called and what it does,its got me beat. Also noticed that access to starter looks very difficult.Is it as bad as what it looks? Cheers.