thetrialsmaster Posted April 13, 2010 Report Share Posted April 13, 2010 hi ive got a second hand set of hs33 maguras ive just bought for a new bike i will be getting i was wondering wen i pump the brake off the bike at the pad end one moves out further than the other ?? is this right?? or how do i fix the problem what is the problem??? Quote Link to comment Share on other sites More sharing options...
jt123 Posted April 13, 2010 Report Share Posted April 13, 2010 Lazy piston. pull the brake so the pads are out and put some car engine oil on the piston that is causing the problem, keep pumping the brake until the piston eases up a bit. Quote Link to comment Share on other sites More sharing options...
thetrialsmaster Posted April 13, 2010 Author Report Share Posted April 13, 2010 [k thanks Quote Link to comment Share on other sites More sharing options...
trials owns Posted April 13, 2010 Report Share Posted April 13, 2010 got the same problem, wont doing this damage the seal on the piston putting oil on it? Quote Link to comment Share on other sites More sharing options...
Adam Griffiths Posted April 13, 2010 Report Share Posted April 13, 2010 got the same problem, wont doing this damage the seal on the piston putting oil on it? No it wont damage your seal as a magura is mineral oil which is quite thin and engine oil is thick but they both lubricate. Quote Link to comment Share on other sites More sharing options...
PeanuckleJive Posted April 14, 2010 Report Share Posted April 14, 2010 Silicone lube (GT85 or similar) works a treat Pull the pistons out with a pair of molegrips (be careful not to break the little nubby!) and then twist them a bit so they rest on the 4 little fingers around the piston and hold the piston out. Then give it a good spray with lube, let it back into the cylinder body and then give it some pumping to make sure it gets nice and lubey. Have the brakes been bled with water? if so, you have to oil the pistons regularly to keep them working good, regular magura blood lubricates them but water does not, so you have to do that bit yourself Quote Link to comment Share on other sites More sharing options...
trials owns Posted April 14, 2010 Report Share Posted April 14, 2010 is a lazy piston also caused with a lack of oil in the hoses after the bleed?, or is it just the seals? because i have bought a brand new hs33 and it has got the problem of a lazy cylinder will just oil to lube up the piston work? Quote Link to comment Share on other sites More sharing options...
Ben John-Hynes Posted April 14, 2010 Report Share Posted April 14, 2010 is a lazy piston also caused with a lack of oil in the hoses after the bleed?, or is it just the seals? because i have bought a brand new hs33 and it has got the problem of a lazy cylinder will just oil to lube up the piston work? If it's brand new just hold in the piston that moves the most and pump the lever so the other piston moves a few times. WIll sort that, Quote Link to comment Share on other sites More sharing options...
trials owns Posted April 14, 2010 Report Share Posted April 14, 2010 ah cheers Quote Link to comment Share on other sites More sharing options...
modifiedridah2k9 Posted April 14, 2010 Report Share Posted April 14, 2010 I have the same problems but i just fixed my pistons. its not affecting my brake so i just leave it alone. Had too many problems Quote Link to comment Share on other sites More sharing options...
jof Posted April 22, 2010 Report Share Posted April 22, 2010 hi ive got a second hand set of hs33 maguras ive just bought for a new bike i will be getting i was wondering wen i pump the brake off the bike at the pad end one moves out further than the other ?? is this right?? or how do i fix the problem what is the problem??? try to use teflon spray normal oil stays wet it will pick up dust and crap and damage the piston and seals teflon drys not sure of silicone never tried it Quote Link to comment Share on other sites More sharing options...
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