Not sure if anyone can help, but thought I'd throw this out there. I have an XTR m988 trail brakeset. Lately, the rear brake lever has been acting a little "notchy". In other words, there is a point in the throw of the brake lever where the pressure needed to get past a certain point spikes a little higher, making the brake feel slightly "indexed". There's a faint "tick" sound from the lever at that point as well.
Underneath the brake lever, there is a rolling pin that follows a curved track in the bottom of the lever "chassis", presumably to alter the leverage ratio at different points of the throw. The track turns sharply at one point, and that's exactly where the tick sound and notchy behavior is coming from.
I've tried using a little tri-flow on the pin and the track at this location, but it hasn't made a difference. The brake did not act like this when new. Does anyone have any experience or insight into this? Thanks.
Results 1 to 3 of 3
Thread: XTR m988 notchy/clicking
Check out the hottest mountain bike products from these brands!
See All Interbike Coverage - Click Here »