JIX Posted May 27, 2005 Report Share Posted May 27, 2005 I have just put new pads in my mono trial. Had a bit of trouble returning the pistons in to the caliper. I solved that problem by removing the top cap and pushing them in so that some oil could escape. ( I think when I had it bled the bike shop left the pistons where they were, resulting in to much oil in the system). Any way I put the new pads in with the pistons fully retracted and then centered the brake over the disc. But when you then pump the lever so the pistons set them selves one of them comes out alot more than the other and rubs on the disc. Basically one comes all the way out until it hits the disc while the other piston hardly comes out at all. Has anyone else had this problem? Does any one know a solution? Thanks for your help. Quote Link to comment Share on other sites More sharing options...
Nick Garland Posted May 27, 2005 Report Share Posted May 27, 2005 I think it might be like that guessing from the name Mono Mini, thus one piston at a guess, so one is closer and the other moves. Im not too sure though, I could well be wrong but thats my guess. So it might be normal. If not then you might have a "sticky piston" so if one doesnt retract the other will retract the amount the other didnt due to fluid levels. Quote Link to comment Share on other sites More sharing options...
guineasmithpig Posted May 27, 2005 Report Share Posted May 27, 2005 yeah, jaime. usually, there's just one piston, which pushes the disc onto the other (fixed) pad? not havin a mono trial myself, i don't know if it is 2 pot, but if one doesn't move at all, i'm guessing its single pot. so sounds like u need to move the caliper out board a little more, so the fixed one is closer to the disc. if the mono's have auto pad wear adjust, then i'm guessin thats y the piston is staying out so far. the amount of travel makes the brake think the pads are worn anyways, good look. avids rule!!!!!!!!! smithy Quote Link to comment Share on other sites More sharing options...
JIX Posted May 27, 2005 Author Report Share Posted May 27, 2005 No the mono part of the name refers to the fact that the caliper is machined from one bit of aluminium. They are definatly 2 pot, as in both pads should move to the disc. It may be a sticky piston but Im not sure how to solve it.>? Avids suck. Quote Link to comment Share on other sites More sharing options...
matthewholdsworth Posted May 27, 2005 Report Share Posted May 27, 2005 long flat blade screwdriver, stick in between your pads and slowly push out keeping screwdriver at same angle so as not to bugger ur pads. this works in the shop if people insist on pulling the demo set up mono trial is a 2 pot and yes they are better than avids! Quote Link to comment Share on other sites More sharing options...
ScotchDave Posted May 27, 2005 Report Share Posted May 27, 2005 No the mono part of the name refers to the fact that the caliper is machined from one bit of aluminium. They are definatly 2 pot, as in both pads should move to the disc. It may be a sticky piston but Im not sure how to solve it.>? Avids suck. ← Best way accorfing to hope is to get a piece of paper and hold the disc against the pad thats coming out too far and pump the lever. This means you get nothing on your pads/rotor and the second piston has to move because the other one can't. :turned: Quote Link to comment Share on other sites More sharing options...
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