STEVE-0 Posted March 15, 2006 Report Share Posted March 15, 2006 (edited) At thrifwood comp, i fell off and fooked me back brake....Today while looking at it, i re-bled it and everythin was hunky-dory. When i looked at my brake lever, something was different...i could work out why my lever was all slack. I took off the lever and i could see the master cylinder that moves when you pull the brake was crushed down the bottom. I yanked it out using some pliers and the piston thing inside looks dead, wont move. I think i need a new lever.Despite that, my main problem, i took apart my other lever (that was working fine) to see what was the difference was. I pulled out this seal thingy (master cylinder, i think) and loads of oil came out and when i put it back together my brake hardly moved and the lever went down to the bars. But the oil wasnt brake fluid! because i have water :$ . WHATS WRONG?Thanks for your timeSteve Edited March 15, 2006 by STEVE-0 Quote Link to comment Share on other sites More sharing options...
Dan6061 Posted March 15, 2006 Report Share Posted March 15, 2006 I'm guessing you took apart the lever in your front brake to compare? (You only said lever...) It needs a bleed Quote Link to comment Share on other sites More sharing options...
STEVE-0 Posted March 15, 2006 Author Report Share Posted March 15, 2006 (edited) You think thats it? Ill try tomoz....just to make sure. Only water anyways. Edited March 15, 2006 by STEVE-0 Quote Link to comment Share on other sites More sharing options...
Dan6061 Posted March 15, 2006 Report Share Posted March 15, 2006 You think thats it? Ill try tomoz....just to make sure. Only water anyways. I'm guessing so, if oil came out, then I guess air got in. Could be wrong though. Might aswell try it Atleast I'm not the only one who's rear Magura's playing up Quote Link to comment Share on other sites More sharing options...
joewhite Posted March 15, 2006 Report Share Posted March 15, 2006 Hey yer that is ur problem i did the same thing just i took my lever off and the master cylinder popped out all the fluid came out ma brake so just rebleed and ull be fine Quote Link to comment Share on other sites More sharing options...
tom tom Posted March 16, 2006 Report Share Posted March 16, 2006 you see alot of topics titled magura troubletom tom Quote Link to comment Share on other sites More sharing options...
ogre Posted March 16, 2006 Report Share Posted March 16, 2006 On the mention of maguras is it normal that one pad returns further than the other? or do i have a spastic magura Quote Link to comment Share on other sites More sharing options...
sexymike Posted March 16, 2006 Report Share Posted March 16, 2006 On the mention of maguras is it normal that one pad returns further than the other? or do i have a spastic magura no u dont, it does happen, usually with older brakes though, if u could (which u cant) u should pop the pistons out and clean them up to feck, but u cantNe ways, to get ur piston out of the master cyclinger, undo the 8mm spanner shroud nut and remove the hose and also take out the 3mm bleed nippleu will have 2 tiny acess holes into the master cyclinder from the other end than the leveru need to grab 1 or 2 small allen keys (1.5mm ish) and push them agains the piston through the bleed and hose holes, this will push it al the way outClean up with Hot Soapy water, *degreser if u have ne* then re-fit with the spring in first and the piston facing so the crator *not pin* is showing outwards. Dont press too hard, it will go to the bottom again and get stuckMike Quote Link to comment Share on other sites More sharing options...
Tony Harrison Posted March 16, 2006 Report Share Posted March 16, 2006 Not a good idea to pull a piston out of a closed hydraulic system and expect it to back in and all be ok. It was probably oil because when you bled it some oil got trapped in the master cylinder. Don't forget, oil floats on water. Quote Link to comment Share on other sites More sharing options...
sexymike Posted March 18, 2006 Report Share Posted March 18, 2006 Not a good idea to pull a piston out of a closed hydraulic system and expect it to back in and all be ok. It was probably oil because when you bled it some oil got trapped in the master cylinder. Don't forget, oil floats on water.errrmne ways, if u do what i said u be reet Quote Link to comment Share on other sites More sharing options...
STEVE-0 Posted March 18, 2006 Author Report Share Posted March 18, 2006 Back brake is solved now i have to try and fix my front one or buy a new lever i think.It might buy a disk although i need a new wheel then....hmmm poll needed.Cheers guys Quote Link to comment Share on other sites More sharing options...
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