Hi all newby here, I have a 1.3 53 plate terios sport with ac and my main aux belt has snapped, I have a basic knowlage of a spanner, so I would really appriciate a step by step blow of the proceedure, I have already wd'd all the nuts I think I will need to undo, I think the adjuster nut for the pas pump is at the back of the unit but not sure of the main tensioner pully wheel for the new belt, any helpers please,cheers jd.