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Message: <blockquote data-quote="Denver" data-source="post: 147880" data-attributes="member: 2512"><p>Didn't know one could use A T F for brake fluid, :headscratch:  but pumping pistons out with old pads still in till both pistons stop, will expose all dirty parts & clean parts of pistons are easily seen. Pull pins & soak everything in A T F, if your reusing brake pads remove them, if not leave in to keep the other piston from being expelled when pushing the first one back in. An old tooth brush & a strip of a green pad both soaking in the A T F with parts will clean pistons up so they can be pushed in with your fingers if everything is clean & smooth to the touch. The green strip of Scotch pad, soaked in the A T F, gets nice & soft, & around pistons like a shoe shine rag, will get the rear parts clean & ready to push in. Will work & release like new, if calipers seals are in good shape, if not easy enough to replace & then grease moving parts, pins with silicone grease, & reassemble. :yes:</p></blockquote><p></p>