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Bought a second hand caliper and replaced the seals just to make sure everything was good. Used gen seals, reused the pistons.
Used the bike and then it stood for a month, came to use it and shed floor had a patch of oil, pads were soaked and res was down by half.
Extended the pistons, cleaned all the fluid off, put a spare set of pads in and refilled the res and took it out.
It's now been stood for 8 hours and the pads are wet on one side, and there is fluid on the back of the other. It seems all 4 seals are leaking?
Any thoughts?
Cheers!
Matt
Definitely used DOT4/5 not mineral oil?
Did you use any grease when fitting the seals/pistons?
Seals designed for DOT4/5.1 fluid will swell if you get mineral oil/grease on them, so it could be the seals have swollen.
Scratched piston bore.
Twisted a seal (or two) while refitting the pistons?
The origional pistons are damaged?
The bottle says 5.1, came as part of a kit,I guess it's reliant on the person putting the correct fluid in bit I rebuilt a mono mini at the same time and that's been fine.
Just wet the seals with fluid when I put them in.
I reckon that's it Phil_H, I did have a game getting the seals in, I bet I messed one up. Just checked and it's leaking from the upper right one it seems.
Bores were good, pistons probably borderline, not scored but bit chipped on the pad face.
Looks like I'm spending again!