Paperclip Posted February 5, 2014 Report Share Posted February 5, 2014 Right so basically I've knoticed that in the last couple of weeks my pistons have not been pulling my pads all the way back in, unlike before. I've ordered some new pads to put in but I'd kinda like to resolve this problem asap, my tpa isnt fully screwed in but it's past half way and my free flow is around half way also.... Quote Link to comment Share on other sites More sharing options...
LEON Posted February 5, 2014 Report Share Posted February 5, 2014 WD40 the pistons? Obviously wipe them right off after. Was it brand new? Quote Link to comment Share on other sites More sharing options...
dezmtber Posted February 5, 2014 Report Share Posted February 5, 2014 Don't wd40 it please. use bicycle disc cleaner from a bike shop not car or motorbike stuff. or electrical contact cleaner , isopropal alcohol. if the brakes still stick. Use some o ring lube / silicon lube on the pistons to lube them up like new Quote Link to comment Share on other sites More sharing options...
sstein Posted February 10, 2014 Report Share Posted February 10, 2014 Don't wd40 it please. use bicycle disc cleaner from a bike shop not car or motorbike stuff. or electrical contact cleaner , isopropal alcohol. if the brakes still stick. Use some o ring lube / silicon lube on the pistons to lube them up like new the disc brake cleaner for cars and motorbikes is exactly the same as the bike stuff! Quote Link to comment Share on other sites More sharing options...
dezmtber Posted February 10, 2014 Report Share Posted February 10, 2014 Wd40 is mental oil based and is ok on maguras. used on discs using dot fluid it will make the seals swell up. car and motorbike disc cleaners have an anti rust inhabitant in the spray to reduce rusting of the rotors. this is basicly a very thin oil. use electrical contact cleaner if you don't like the price of bike shop brake cleaner. M i know mucoff and fenwicks will set you back 7-9 quid a tin. the electrical contact cleaners set you back 3-5 quid cheaper and better as its isopropal alcohol Quote Link to comment Share on other sites More sharing options...
Blake Posted February 10, 2014 Report Share Posted February 10, 2014 Bikehut disc cleaner is good stuff for cleaning rims and pads Light oil on slaves and wipe it off, or fill up a little pot with gt85 and put the slaves in there (without pads obvs) and squeeze the lever a ton. Let it dry and wack pads back on Quote Link to comment Share on other sites More sharing options...
SamKidney Posted February 10, 2014 Report Share Posted February 10, 2014 Wd40 is mental oil based and is ok on maguras. used on discs using dot fluid it will make the seals swell up. car and motorbike disc cleaners have an anti rust inhabitant in the spray to reduce rusting of the rotors. this is basicly a very thin oil. use electrical contact cleaner if you don't like the price of bike shop brake cleaner. M i know mucoff and fenwicks will set you back 7-9 quid a tin. the electrical contact cleaners set you back 3-5 quid cheaper and better as its isopropal alcohol I've used the car brake cleaner we have at work on all my brakes. Smooth rims on my trials bike, ground, my BMX brakes and my MTB discs. All brakes have performed FAR better than they had previously. The brake cleaner strips the rust inhibitors (thin grease) found on new car brake discs, it doesn't add to them. Quote Link to comment Share on other sites More sharing options...
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