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While installing hydraulic disc brakes on your new eBike may seem daunting, this guide to changing breaks will help you get started with information on the tools you need and steps to follow. After all, electric bicycles can be fast and need a powerful brake performance to ensure the rider is safe. Learning how to fix problems as they come up, like replacing the hydraulic brake setup, can help ensure your ebike lasts a long time.
Time Required: 30 minutes
Total Steps: 7
Tools Needed: Bike tool, cable cutter (or any sharp cutting tool)
The first step in changing out your old brakes for new ones is to remove the brake caliper that’s currently on your bike. Brake calipers will typically be mounted to the bike with two or three bolts. Two of the bolts attach the caliper to the bike and the third attached the brake hose to the caliber. Find the three bolts and use the appropriately sized Allen wrench on your bike tool to remove them from the bike.
Once the caliper is off, you’ll need to remove the existing brake levers. Take off the handgrip on the handlebars and an upright bar or mirror if the bike has one. Unplug the lever from the bike’s wire harness. Then, loosen the brake lever using the bike tool and slide it off the bike handlebars. You can leave the handlebar grip and other components you removed off until the end of the installation process.
Now that you’ve removed the old lever, you can immediately slide on the lever of the new hydraulic brake system. Slide the new hydraulic brake lever onto the bike handle and plug the electrical cable into the bike’s wire harness and position and tighten as needed.
The brake hose of the brake assembly runs between the lever and the brake caliper. Though it may not be needed depending on the assembly you buy, you may want to shorten the brake hose if it is too long for your bike. If brake adjustments are needed, use a cable cutter or any type of sharp cutting tool to shorten the hose.
Run the brake hose from the lever down to the brake disc where you will mount the new caliper. Hydraulic brake calipers will typically have a mount with two bolt holes that attach to the frame of the bike. Loosely screw the caliper to the bike to give you room to make adjustments. Then, squeeze the brake lever to align the caliper and the disc and tighten the mounting bolts of the caliper fully.
After fully installing the entire braking assembly, you want to make sure that everything is aligned properly. With the brakes released, lift the bike and spin the wheel. Make sure that the wheel is spinning freely without any friction between the caliper and the brake disc. Then, place pressure on the brake lever to stop the spin. If you can brake successfully, then everything is aligned properly. This is important to help make sure that you are less likely to have brake failures because the brake line is too long in your hydraulic disc brake system.
Now that the installation is complete, you can put any parts that you removed from the bike back on. Reinstall the bike’s handle grips, mirrors, and any other accessories that may have been removed from the handlebar. And if you found this article useful, we have more ebike hydraulic disc brakes tips you can check out.
Now that you have replaced the entire braking system on your bike, you may be interested in some information about your ebike motor like what to do if your ebike motor makes a clicking noise or other maintenance tips to help make sure the functional lifespan of your bikes with disc brakes is the most it can be. Additionally, you can learn the difference between rear and front-drive motors with our guides for the top rear-drive motor electric bikes and the best front-drive electric bikes. Lastly, we have a great guide on how you can convert a traditional bike to electric, should that interest you.
Hydraulic disk brakes have 100% braking power on a bike when you are moving in forward or reverse directions.
The front-wheel brake of the bike accounts for as much as 70% of a bike’s braking capabilities.