as you do not say if front or rear pads you are changing, i will have to use guess-work, if it is the front pads, then you can push piston back with a "G" clamp or plumbers pliers. if rear pads them you need a piston reversing tool, which you can get from motor factors. and as you do not give car details, cannot tell you which way it turns, so you will have to work this out for yourself. and if you are to use this site again, it would be a great help if you supply car details i.e make, model, year, engine size. as this will help in getting any answers.
numpty helper, March 2011
