ashk16 Posted November 1, 2009 Report Share Posted November 1, 2009 (edited) i have edited the thread because i have just took the brake apart to find that the problem lies with the master piston, i have been able to pull it out with pliers, cleaned the chamber, spring and piston and re greased it, i then put it in and put more fluid in the brake by pulling one of the slevs out and putting the bleed pins in but it still gets jammed in as soon as you push it in..... am i doing something wrong??ash. Edited November 1, 2009 by ashk16 Quote Link to comment Share on other sites More sharing options...
ashk16 Posted November 1, 2009 Author Report Share Posted November 1, 2009 i have sealed it up air tight with water in and i can now push the lever in and the pistons on the slaves pop out nicely but then the lever is not capable of springing back so i have to pysically push the slaves to pop the lever piston back out, any ideas on how to sort out the lever?? Quote Link to comment Share on other sites More sharing options...
Jack Morton Posted November 1, 2009 Report Share Posted November 1, 2009 Loosen the bolt ever so slightly which holds your lever body & lever blade together. Quote Link to comment Share on other sites More sharing options...
Revolver Posted November 1, 2009 Report Share Posted November 1, 2009 'Too' Quote Link to comment Share on other sites More sharing options...
ashk16 Posted November 1, 2009 Author Report Share Posted November 1, 2009 i can take the bolt and lever off and the piston still remains down inside Quote Link to comment Share on other sites More sharing options...
maxxis26 Posted November 2, 2009 Report Share Posted November 2, 2009 i had same problem i presume your using new style maggiehttp://www.trials-forum.co.uk/forum/index....p;#entry2010789i had a google and found the only way to make it fit right again was to gently sand the lower on the piston after this i put it back together and it worked fine with no leaks, just make sure the "O" ring seal is lightly lubricated before you put it back inhope i helped Quote Link to comment Share on other sites More sharing options...
eep803 Posted November 7, 2009 Report Share Posted November 7, 2009 Hi, I've had this same problem on an old maggy that was bled with water. The piston expands/swells/gets bigger and then wont return. I found putting it in the freezer made the plastic piston contract more than the alloy body and freed it up to spring out. This may help if you've got the newer maggy which doesnt allow you to poke an allen key through the bleed hole to pop it out. I then lubed mine up loads but as it warmed up the piston stuck again.I never got round to sanding it down and Tarty were doing a full maggy for £50, yes a bargain, and still are!http://www.tartybikes.co.uk/search.php?category_id=72Since then I've not got round to sanding it and putting it back together but did see that Tarty are now doing replacement pistons and springs. I presume that this will be another way of bringing back a swollen piston to life... ?!http://www.tartybikes.co.uk/product.php?product_id=10987Am going to chat to Tarty on Monday and if so will order one up asap.Cheers, DavePs I dont work for and am not sponsored by Tarty, just think they are the nutts. Quote Link to comment Share on other sites More sharing options...
George.E Posted November 7, 2009 Report Share Posted November 7, 2009 I had exactly the same problem, take out the piston, take off the o ring and sand the piston down.Lube it back up, put it back in and away you go.Mine has worked fine ever since. Quote Link to comment Share on other sites More sharing options...
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