28-05-13, 05:30 PM
You could do what I did and split the caliper by undoing the 2 bolts on back. Don't lose the rubber washer that sits between the 2 halves & seals the fluid passageway. You can then blow pistons out with compressed air(cautiously) even if you have to ask the bike shop to do this. Then you can easily access grooves for seals to clean before fitting new seals-bit of red rubber grease helps when refitting pistons.