When i spin the rear wheel there is a squeak coming form the rear brake, the wheel spins one turn with a bit of effort.
I assume that there is a sticky piston.
I'm going to take the caliper off, remove the pads, put a bit of wood inbetween the pistons and pump them out to give them a clean and regrease.
Does taking the resevior cap off help in returning the pistons to the in position?
Don't want to strip them down as i need the bike and am planning putting braided lines on in about 3 weeks so want to do it then if needs be.