I'm sure I'm not the only one who has experienced this but I'll be damned if I can find any explanation/fix.
I have a Black Cat with 2012 XT disc brakes. They've always worked great- love em.
Two days ago I swapped rear cogs and in the process loosened and readjusted my rear caliper. I've done this a hundred times consider myself fairly skilled with disc brakes.
On the next ride, the rear brake started squealing like a mother. I bet you can hear me from 3/4 mile away in the forest.
And suddenly the performance of the rear brake is piss poor.
The pads have about 30% life left. Plenty of material on there.
At first I tried re-adjusting the calipers and resetting the pistons, etc.
No improvement in either sqawking or performance.
Then I tried cleaning the rotors with alcohol. No improvement.
Then I tried sanding the contact surfaces of the pads lightly. No improvement.
So I tried taking fine steel wool to the rotor surface. No change.
So I broke down and purchased new brake pads. No change. Same squeal, same poor performance.
So before I go purchase a new rotor, thought I'd check in and see if anyone knows a magic fix.
Deranged in Durango.
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