As above but the problem is that the piston will not comptess back to allow fit of new pads ,is it to do with the hand brake assembly do i have to do something with that to allow the pistons to move back.

Ian Thompson, March 2014

I am not sure but these used to have a separate h/brake system with small shoes acting on an inner face of the disc and the brake pads/foot brake was a separate system altogether,but if the h/brake us incorporated onto the brake pads then the pistons will need to be wound in,some models were r/h wind on the offside and l/h wind on the near side so would check that out,also a wind back tool would be required,good luck

cdc, March 2014