use something to pry the pads/pistons back apart
Seems easy. Too easy. . .
Go gently
the pistons need to retract without getting jammed. it's the same procedure when you stick new pads back in, the pistons need to be retracted.
@TvH started
London Fixed Gear and Single-Speed is a community of fixed gear and single-speed cyclists.
use something to pry the pads/pistons back apart