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One way to keep your brake calipers from sticking is to give them a good spray with brake cleaner. There are times when road dirt, brake dust, and other particles will get into the calipers causing them to "gum" up and stick. Brake cleaner will help penetrate into the calipers and loosen them up. One way to keep your brake calipers from sticking is to give them a good spray with brake cleaner. There are times when road dirt, brake dust, and other particles will get into the calipers causing them to "gum" up and stick. Brake cleaner will help penetrate into the calipers and loosen them up. * '''caliper slides''': those two pins that screw ends that hold the caliper on your disc. They can get gummed up and stick, preventing fee caliper movement. Never use petrolium based grease on these caliper slides. Use silicone based caliper slide grease. * caliper piston: if the caliper slides aren't causing the caliper to stick, then it is probably the piston. It is the part in the center that pushes the pad when break fluid pressure builds against it.* ''note that other factors besides caliper slides and piston can cause a caliper to stick, such as a pinched or collapsed break line.'' === replace caliper === # Car jacked, wheel unlocked (so steering wheel turns), tire removed.# Position drain pan under caliper. # Locate the "banjo" bolt (connects caliper to the brake hose). Loosen it.# dghdfssdf