nafan Posted June 11, 2006 Report Share Posted June 11, 2006 I tried searching but couldn't find anything specific to this problem...Well firstly I have just this morning gave my brake a bit of a service, cleaned pistons out, lubed everything up etc...I have recently had to bodge my 05 maggie with a nut and bolt (instead of the tpa bolt) and it works ok...But for some stupid reason one piston is always hugging the rim and the other is miles away... In other words they do not adjust evenly...No matter what I do the whole thing just messes up... I am getting a new tpa bolt from my dad's friend today I think, but I really don't think that's the problem...Not only that, if I somehow manage to set it up as well as possible, it will swap around and the other side will hug the rim...I really do not know what is going on, if someone could help me and I would much appreciate it Cheers, Nathan Quote Link to comment Share on other sites More sharing options...
SamHolmes Posted June 11, 2006 Report Share Posted June 11, 2006 Mine started to do this the other dayI left it for a while without pulling the lever and it worked fine, after a while it starts again thoughMight just need re-bleeding? Quote Link to comment Share on other sites More sharing options...
nafan Posted June 11, 2006 Author Report Share Posted June 11, 2006 I did think that, I'll get a quote from Halfords or summit (don't like bleeding it myself)Cheers mate,Nathan Quote Link to comment Share on other sites More sharing options...
Si-man Posted June 11, 2006 Report Share Posted June 11, 2006 Dont do that, they will charge about £30 an f**k it upJust get a mate to bleed em or something, really isnt that hard to bleed a brake you know Quote Link to comment Share on other sites More sharing options...
ScotchDave Posted June 11, 2006 Report Share Posted June 11, 2006 Get some GT85, now hold one piston in and pull the lever til the second one comes out quite far, then squirt some loob on the piston, let it go back in and repeat til the stickiness disappears. This is obviously to be done without pads in. Quote Link to comment Share on other sites More sharing options...
nafan Posted June 11, 2006 Author Report Share Posted June 11, 2006 I have already lubed them up with WD40...Nathan Quote Link to comment Share on other sites More sharing options...
Simpson Posted June 11, 2006 Report Share Posted June 11, 2006 I have already lubed them up with WD40...Nathani found my old 04 lever did this its been working wank for 3 months or so and had a lazy piston i lubed an lubed and pulled an bled again an again - till i figured enough was enough - my mate was kind enough to give me a maggie front brake he had lying arround just fitting my rear hosing onto it gave it a fresh bleed best thing i ever did now the brakes awsome forgot what it was like to have a brake set up this well Quote Link to comment Share on other sites More sharing options...
redsol Posted June 11, 2006 Report Share Posted June 11, 2006 Are you sure it's not just that you've got the tpa in too far?http://www.execulink.com/~dtierney/wmc/Magura/TPA.htmI might be assuming wrong, but I hope that's some help anyway.Will Quote Link to comment Share on other sites More sharing options...
JT! Posted June 11, 2006 Report Share Posted June 11, 2006 (edited) You don't need to bleed your brake and you don't need to lube the pistons.It's becuase you have too much TPA ajustment.What you need to do is undo your tpa (red star) untill the both pads go right back to the cylindars. You'll now find that you need to pull the leaver right back to the bars to make the brake work, that's normal. Now undo the bolts that hold the magura cylindars in place and set them up nice and close to the rim. Some people use a 2p coin in between the brake pads and the rim, the 2p coin width is a good distence of a gap to have between your brake pad and your rim. When they are set up nice and close to the rim, and bolted back down, when you pull the leaver now it shouldn't come all the way back down to the bars, now all you do is use the tpa (red star) to ajust the brake to how you like it. Becuase now you have little tpa ajustment, both pads should retract nicely.If after doing this you still find one of the pads isn't comming back proporly, repeat what you have just done. Pay extra attention to the underlined part.*red star = bolt in your case. Edited June 11, 2006 by JT! Quote Link to comment Share on other sites More sharing options...
nafan Posted June 13, 2006 Author Report Share Posted June 13, 2006 (edited) Yeah my bodge pushes the tpa in way too far but I figured that would be alright, it should be fine once I get my new tpa bolt then...I will nip up to costmill and do my bodge again tonight, and not glue the nut onto the bolt too far Thanks ever so much guys, Nathan Edited June 13, 2006 by nafan Quote Link to comment Share on other sites More sharing options...
JT! Posted June 13, 2006 Report Share Posted June 13, 2006 Well if you can screw the bolt out far enough so that both pads retract, that the bodge is fine, and you need to do what i said.If the bodge means that you can actually unscrew it enough for both pads to retract then you've done something weird and wonderful and it need sorting out. Quote Link to comment Share on other sites More sharing options...
Clarky Posted June 13, 2006 Report Share Posted June 13, 2006 My brake does it all the time i think i just need to grease the pistons up or lube them as the bleeds fine.Clarky Quote Link to comment Share on other sites More sharing options...
nafan Posted June 13, 2006 Author Report Share Posted June 13, 2006 Cheers everyone I have adjusted the bodge so that the pistons are only adjusted about 2mm each side Seems to be working fine now, was riding well earlier Thanks again, especially you JT Nathan Quote Link to comment Share on other sites More sharing options...
JT! Posted June 14, 2006 Report Share Posted June 14, 2006 My brake does it all the time i think i just need to grease the pistons up or lube them as the bleeds fine.ClarkyTry what i said, it can't not work because once one pad retracts full the other one has too.Lubing cylinders won't work because one will always be 'freer' than the other, and that's the one that will retract fully.Even magura say that this problem is created by too much ajustment on the TPA. Quote Link to comment Share on other sites More sharing options...
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