MaderaMark Posted March 29, 2023 Report Share Posted March 29, 2023 Had anyone experience this kind of thing? no leaks, but yes the pistons retracts so slow that it does made me hop with balls on the stem. Any compatible seals or should replace calipers? I had bleed many times and even tried my levers to other calipers (mtb) and all goes well. So I confirmed the MT4 calipers on my street trials bike. Any suggestions while $aving for budget? Cheers! Quote Link to comment Share on other sites More sharing options...
Daan Posted March 29, 2023 Report Share Posted March 29, 2023 Tried a good cleaning and relubing of the pistons? Remove pads, let the pistons come out a bit (not too far), (tooth)brush with alcohol, and give it a good scrubbing. Then some silicone spray on the pistons, push them back in, squeeze them out again, silicone spray, back in, etc etc a couple of times. 1 Quote Link to comment Share on other sites More sharing options...
MaderaMark Posted March 30, 2023 Author Report Share Posted March 30, 2023 thanks, i will get those silicone spray this week and some good amount of mineral oil.... pedal kicking with unexpected brakes engaging scares me a lot.... Quote Link to comment Share on other sites More sharing options...
Daan Posted March 30, 2023 Report Share Posted March 30, 2023 Don't forget to clean off the caliper with a good amount of alcohol when you're done, to get rid of any silicone where it shouldn't be. 1 Quote Link to comment Share on other sites More sharing options...
MaderaMark Posted April 1, 2023 Author Report Share Posted April 1, 2023 i had finally did your suggestions @Daan. It doesn't stick that much anymore, now the pistons retracts bit slower than the rear caliper. Will try to ride someday when I have time for a test. 1 Quote Link to comment Share on other sites More sharing options...
MaderaMark Posted April 11, 2023 Author Report Share Posted April 11, 2023 Latest.... Silicon spray saved me bunch of $$$..... Quote Link to comment Share on other sites More sharing options...
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