paul_ct Posted July 13, 2014 Posted July 13, 2014 When I pull my one brake lever there is no response at first, then a sort of click and they start gripping. What could be the problem?
fanievb Posted July 13, 2014 Posted July 13, 2014 A bit more detail would nice. Hydraulic? Bleed themOtherwise check your cables
BMXER Posted July 13, 2014 Posted July 13, 2014 More details! But why use your brake? They simply slow you down.
paul_ct Posted July 13, 2014 Author Posted July 13, 2014 They're hydraulic disc brakes. It's hard to describe exactly what's happening.
Capricorn Posted July 13, 2014 Posted July 13, 2014 the older avid brakes would do that if you pushed the brake forward far enough. then pulling it back, it would click first, and then the brake would engage. I often played around with the brake like a sort of pre-race nervous tick. Didn't affect braking at all. The new models don't do it though. something to do with the lever mechanism. But lets see what the OP says... Captain Fastbastard Mayhem 1
paul_ct Posted July 14, 2014 Author Posted July 14, 2014 Let's try with more info!  The rear brake in question is a Shimano BR-M575. When pulling the lever, there's no resistance until 2/3 through the pull. Then it makes a squeaky click from the back and starts to grip. Make any sense?
paul_ct Posted July 14, 2014 Author Posted July 14, 2014 Wrt Capricorn's post, I haven't moved the lever forward, although the click might be similar and it does affect the braking as I don't have a smooth increase as I pull the lever.
MeridaHFS Posted July 14, 2014 Posted July 14, 2014 Caliper Piston sticking?? When last were the brakes bled and generally cleaned/serviced? How old/how many km's has the brake set done? frame 1
paul_ct Posted July 14, 2014 Author Posted July 14, 2014 They were serviced relatively recently. But I got the bike 2nd hand so I don't know the age of the set. Sticky piston sounds about right. I'll try have a closer look at that.
lechatnoir Posted July 14, 2014 Posted July 14, 2014 I had this on my car where the brake piston was seized in the caliper. Made for some scary braking. Some would say hilarious... Sorted it with lubing the piston nicely and making sure I avoided water traverses. Sounds like what you have there... The clicking could be the piston unjamming itself and suddenly being pressed into action (sorry)
paul_ct Posted July 14, 2014 Author Posted July 14, 2014 Thanks for that. I'll have a closer look. My last ride was pretty muddy although the problem surfaced quite a bit later. Perhaps my cleaning left something to be desired.
paul_ct Posted July 25, 2014 Author Posted July 25, 2014 (edited) By the way, lubed the piston and all sorted. B)Â Edit: I'd advise to try not get oil on the pads or rotor as it makes stopping more challenging. Edited July 26, 2014 by paul_ct
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