Brakes are important features of our bikes because they stop us from hurting ourselves. When it comes to these little friends that slow your tires when danger is in the way, well, sometimes they need a little bit of attention.
If you find that the levers for your brakes moving too close to the handlebars or the tension seems loose then it may be time for an adjustment. There is no need to hit up the local bike shop if you have enough room and a few tools. Today we are going to discuss how to adjust your bicycle brakes.
First, there are all types of bicycle brakes, so we will do our best to cover them all. When it comes to your bike, the first thing you need to figure out what type of brakes you have. Let’s go over each type briefly.
Types of Bicycle Brakes
1. Caliper Brakes
This type of brake is the most widely used and found primarily on children’s and road bikes. They are fastened to the frame above the tire and squeeze on the rim to stop the bike, which is why they are known as rim brakes.
2. Cantilever Brakes
More powerful than our last type, cantilever brakes are typically used for bikes created for cyclocross racing, which takes a road bike through light terrain that is off-road. They require a special fork for mounting to a road bike.These types of brakes also apply pressure to the rim of the tire, which makes them rim brakes as well.
3. V Brakes
Also known as direct or linear pull brakes, this type is exceptionally powerful. Used mostly on mountain and off-road bikes, this style of brake works wonderfully when it’s wet or muddy. They weight more than the other types yet these fall into the same category of “rim brakes” as the other two we’ve discussed.
4. Disc Brakes
Our last type of brake comes in two forms of its own, hydraulic and mechanical. The reason why these are different is because they are not rim brakes. Instead, disc brakes apply pressure to the “rotor”. This type of brake can handle the elements better than any of the others. To put these brakes on a bike must have a compatible hub.
What You Need
Now that we have discussed the different types of brakes, if you don’t know what kind you have take a look and compare it to our descriptions. Once you figure out what type of brakes your bike has you can follow along to the instructions for that type only. We’ve broken it down by brake type to make it easier for you to follow along.
As for what you need, here is a general list. The exceptions are listed. No matter what type of brakes you have on your bike, you will need the following.
For all brake types:
- A set of Allen wrenches that include 3mm, 4mm, and 5mm wrenches
- The owners manual for your bike
For caliper brakes you also need:
- Two 10 mm socket wrenches
- A Phillips Head screwdriver
For cantilever brakes you also need:
- Zip tie
How To Adjust Your Bicycle Brakes
We’ve covered what types of brakes you might have and what you need to adjust them so let’s get to it. But before we do, make sure the size wrench we suggest is what your brakes require. Any information you might need for your bike is right in your manual.
Directions for both brake pads
- Make sure your wheel is fully in the drop out by opening and closing the quick release
- Take a 5mm Allen wrench and tighten the bolt that fastens the brake to the fork (frame) of the bike. You don’t want to make it too tight. Nice and snug is perfect.
- Take a 4mm Allen wrench and start with the left extension.
- Loosen the mounting screw and set the bottom edge of the brake pad to the bottom edge of the rim as close as possible. The idea is to not let the brake pad ride up and hit the tire in use. Also, be sure the brake pad is centered on the rim. You don’t want one side to be higher or lower than the other. It should be centered and flat along the rim.
Directions if one brake pad is further away from the rim than the other
- There should be an adjustment screw on top of the caliper, which moves the caliper around, and ultimately the position of the pads.
- Take a Phillips head screwdriver and loosen, or tighten, the screw. You should see the pads move around and by watching, adjust that screw until they are evenly placed by the rim.
- Spin the tire and make sure neither pad is rubbing against the tire.
- Some types of caliper brakes require adjustment to the mounting bolts to move the caliper. For this you need two 10mm socket wrenches.
- Place one socket wrench on the mounting nut on the back of the brake and the other on the bolt on the front of your frame.
- Rotate them at the same time to get the pads at an equal distance from the rim.
- Once again, test your brakes.
- Repeat for personal adjustments.
Make sure your wheel is fully in the drop out by opening and closing the quick release.
Release the cable from the brake pad so you can adjust them.
Wrap a zip tie around the back of the right brake pad. This creates a toe-in, which can help if you have squealing when applying your brakes.
Attach the cable and start to align the right brake pad.
Take a 5mm Allen wrench, release the locking nut, and push the pad up against the rim of the tire. Get it as high as you can. Make sure the pad is balanced on either side and flat against the rim.
These brakes are simpler to adjust. Follow these steps:
Adjust the barrel outward, which is simply twisting the small knob on the opposite side of the handle that attaches the cable.
It should move like a nut and the further you move it out the more resistance you will get when squeezing the handle.
This could be all you need but if the barrel is almost out but the handle lever is still loose then you need to move on to the actual brakes.
Take a number 5 Allen wrench and loosen the cable that attaches both brakes to the rim. Once the bolt is loosened the cable should slide easily.
Use your hand to pinch your brake levers together, hold the cable so they are tight, and tighten the bolt with the number 5 Allen wrench. When you spin your tire at this point the brake levers should be rubbing against the tires tightly.
Go back to the barrel adjustment and back it all the way in by twisting it in the opposite direction
Spin the wheel and test the handle.
You only need a few Allen wrenches for this adjustment. The steps are as follows:
It is normal to hear some rubbing when these types of brakes are new.
If the sound disappears that means the brake pads are wearing into the rotors.
To adjust them loosen the anchor bolt with the appropriate Allen wrench. This bolt can be found at the front of your brake and is attached to a cable.
Grasp the cable.
Move the arm up the cable.
And retighten the anchor bolt.
Next check the clearance of the brake pads.
This is done by looking down the length of the rotor through the pads. This can be difficult to distinguish but simply putting a sheet of white paper behind the rotor will add definition so you can see the separation.
To adjust the inner pad tolerance follow these steps:
You want to gain the tightest tolerance as possible. To do this you need to adjust the inner brake pad. This is done by twisting the pad adjuster bolt, which is found on the caliper located at the inner portion of the tire. Your owners manual should help you find these parts.
Twist the pad adjustment bolt clockwise.
Spin the wheel.
If you hear the rubbing on the rotor back it off slightly by turning the pad adjustment bolt back a bit.
Squeeze the brake lever.
Spin the wheel.
If the noise hasn’t stopped, adjust the bolt back again, squeeze the lever, and spin.
Repeat until noise has stopped.
Adjust the outer pad tolerance with the following steps:
Loosen the same anchor bolt that is attached to the cable.
Spin the wheel.
Move the arm until you hear a little rubbing.
Tighten the anchor bolt.
Squeeze your brake lever.
Spin the wheel.
If your pads are still making noise loosen the anchor bolt, move the arm slightly down the cable and tighten it again.
These steps work for front and rear brakes.
We hope this tutorial on how to adjust your brakes was simple for you to follow. Not everyone is savy to the world of bike mechanics and our goal is to make these instructions readable for riders of any level. Working brakes are important for our safety when riding.
On top of that, knowing how to adjust your own brakes without relying on a shop is self-reliant and easy on the wallet. If you liked this post please let us know in the comments section or share this article with your friends and fellow bikers.