I took a caliper to my local Kwik-Fit and got them to blast the piston out for me using one of their compressors. Do you have any sort of friendly car/bike workshop near you that might be able to do the same?
Just be sure to wrap a rag round it first so it doesn’t go flying across the workshop :Whistling:
Frozen you say? You could try that. I mean freezing it, or in fact heating it. The pistons are likely to be a different metal to the caliper and a change it heat will cause one to shrink (or expand) more than the other, thus freeing them up. Might be worth sticking them in a bag in the freezer for a few hours/overnight, or heating them with something, if you can’t get to a shop today…
*** make sure you don’t get any brake fluid on your food; it’s carcinogenic! ***
Totally - I’ve got this draper piston extractor slide hammer thing - has always worked for me until now - but I only get about 5 0r six full force slides and the thing just pops out of the piston . . . about three of them are well and truly stuck.
I think the problem started when I stuck some new calipers in yesterday - had to force the pistons in to accomodate the new thicker calipers.
Bike hardly moved then - it was like the brakes were on - I thought fck it - i’ll ride it and free them up simply by wearing away excess brake pad - anyways - the calipers just heated up like fck and got red hot because of the resistance.
So basicallly I think that I’ve welded the f*ckers in place . . .
What i should have done was overhauled the calipers before I put the new pads in - they are tokicos after all . . . :doze:
If they aint moving with big slide smashes … thats very very stuck indeed . You may have achieved fusion with the alloy . Does one of the 2 calipers work ? remove one disc , attatch working caliper . remove other hose blank it off . If it passes on one disc on the brake tester and only has one disc and one caliper ,I dont see why it would fail … Maybe ??? Then repair/ replace at your leisure .