Anyone know anything about disc brakes?

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Saffronspokes

Shimano RS505. Pistons stuck in.

Have tried bleeding the system, forcing them out with mineral oil, have soaked them in degreaser to try and free them up. I've got one piston moving but the other won't budge

Edit: Now got it moving

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edscoble in reply to @Saffronspokes

My advice is to take it to a reputable LBS and ask them to see it they can do anything, as this sound like a delicate issues that can easily damage the piston if further attempt is being made.

Worse come to worse is a new caliper which isn’t expensive.

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Saffronspokes in reply to @edscoble

I seem to have got it working. I'll ride it for a bit and see, if it holds up then all good. If not, then yes new caliper time.
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Saffronspokes in reply to @edscoble

Just taken it for a ride around the block and the front brake now leaks fluid so looks like I need a new one.

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