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Avid Disc Brake Problem

buck

Chimp
Jan 26, 2003
59
0
poolesville/clemson for school
I can't seem to get my rear brake to work. It was working fine one day, then after a weekend of riding it doesnt work. I worked on it awhile and had it aligned really well, but it still didnt work. I think the rotor may be contaiminated, so I was going to get some alcohol to clean it. Also should I try to clean the pads too when I clean the rotor. If the rotor is contaminated will I have to replace the pads anyway? My front pads are fine and it looks like I have enough pad left in the rear. Thanks, any help will be good, I want to ride, so I got to get this fixed.
 

Serial Midget

Al Bundy
Jun 25, 2002
13,053
1,897
Fort of Rio Grande
My guess, if everything else is in order, is that you have contaminated pads caused by the pick up from your rotor. If you use a propelled chain lube it's easy to hit the rotor without noticing..n it doesn't take much.

I've never attempted to clean a set of pads but for safety and performance I'd replace them before I's use ones that were contaminated and cleaned.
 

Nate at RIT

Monkey
Oct 8, 2003
278
0
bending stuff in the ROC
This has always worked for me and gotten my Avids from fully contaminated to deadly powerful.
1. Clean the rotor with dishwashing soap and water, then rinse it. Then clean it with alcohol to get any residue off of it.

2. Get a small bowl and pour some rubbign alcohol into it. Let the pads soak in it for a minute or two. Using pliers, hang onto the little tab and pick them up out of the bowl. Using a blow torch or similar device, burn them for a minute or so. They should look "dry" when you're done, and there will be a black residue on the pads now. Let them cool, and sand them down with fine sandpaper, then clean that off with rubbing alcohol.

Put the pads back in, readjust everything if needed, and that should do it. They may be loud for a couple stops, but that should get them back to full power.