Replace leaking calipers instead of overhauling; get new or rebuilt units. Always replace in pairs. To remove, loosen lug nuts, raise vehicle, remove wheel, and disconnect brake hose from caliper. Plug the brake hose and discard washers. To install, reverse removal, use new washers, tighten guide pins or bolts, and bleed brake circuit if hose was disconnected. Check for leaks, pump brake pedal to align pads with disc, and test brakes before normal use.