When tightening or loosening bicycle brakes, make sure the the pads are properly aligned with the rim. Tighten and loosen bicycle brakes with tips from a bike mechanic in this free video on bicycles.
Hey, this is Jeff for the Two Wheeler Dealer, and I'm going to talk with you about how to tighten or loosen your brakes and make sure that they're properly adjusted. Now to start, on this bike, the first thing you want to do is make sure that the pads are properly aligned with the rim; they're not going to hit the tire, or they're not hanging off the bottom of the rim. To do that, squeeze the brake lever all the way closed to kind of hold the pads in place. And this is a four millimeter Allen in the end. Loosen that and then you should be able to reposition the pads on the rim. Tighten that back down. Do the same on the other side. And then you need to set your cable tension. Right now, the cable is too loose, so I can pull the lever all the way back to the handlebar before it engages. If it's too tight the wheel won't spin freely and your brake pads will rub, so there's a a fine line to to the point where it needs to be adjusted with cable tension. The easiest method to do this is to squeeze the brake pads against the rim, loosen this pinch bolt on the side; it's a five millimeter, and then pull the cable tight into there. I'll hold it down, holding everything about as tight as I can. I'll tighten this pinch bolt back on the cable, and when I release, there should be a small amount of give in the cable to open back up a slight amount off the rim. Pull the brake; make sure that it's adjusted properly. It should engage, maybe about two thirds of the way, or sorry, a third of the way into the into the lever pull, so right about there it engages. It still gives you plenty of leverage to come back. That's a, it's a well adjusted brake. And that's how to properly adjust it.