Bicycle Mechanics - My back brakes

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NCMTBIKER
10-17-09, 04:36 PM
I have a older model trek road bike and the back brakes when u apply them close in on the wheel but when u let off they dont open back up,there caliper style i beleive.And there are new cables on it so i know its not that.Thanks alot

operator
10-17-09, 05:02 PM
Disconnect the cable from the brake anchor point. It'll be obvious, which is the problem.
canopus
10-17-09, 11:14 PM
The pivot bolt assembly is to tight (most likely) and or the spring has been bent/compressed and doesn't have enough spring to return the calipers (least likely).

Just need to adjust the pivot bolt so that the calipers have a slight, slight, slight resistance (did I say slight...) when moving. The washers between the arms should be lubed also (I use a thin film of grease when I pull them apart and put them back together). Als use a little bit of grease on the spring arm where they seat in the caliper arm.