How to Replace the Brake System of an Electric Bicycle
Views :
Update time : 2026-02-12
Brake System Replacement Tutorial (Covers Disc & Drum Brakes)
1. Preparation Tools & Materials
- Essential Tools: Wrench, socket, screwdriver, needle-nose pliers, piston press (disc brake-specific), anti-squeal paste, cleaning cloth;
- Replacement Materials: Vehicle-compatible brake pads (disc/drum), brake cable (if replacement is needed);
- Safety Premise: Turn off the power, pull out the key, and secure the vehicle firmly.
2. Disc Brake System Replacement Steps
Step 1: Remove the Old Brake Pads
- Open the brake fluid reservoir cap. If the brake fluid is overfilled, use a syringe to suck out some (to prevent overflow during installation);
- Remove the tire (refer to Step 2 of Tire Replacement), use a wrench to unscrew the caliper mounting bolts, and take out the old brake pads;
- Wipe the inside of the brake caliper with a cleaning cloth to remove dust and oil. Check for rust on the caliper piston (replace the caliper if there is any issue).
Step 2: Install the New Brake Pads
- Apply a small amount of anti-squeal paste to the friction surface of the new brake pads (to reduce noise);
- Use a piston press to slowly push the caliper piston back to its original position (to facilitate the installation of new pads);
- Install the new brake pads in place, tighten the caliper mounting bolts, and close the reservoir cap.
Step 3: Debugging & Test Ride
- Repeatedly squeeze the brake lever to reset the piston and make it fit with the brake pads;
- Check the brake feel: Too tight will increase wear, while too loose will result in ineffective braking. Fine-tune using the brake lever travel knob;
- Reinstall the tire and conduct a low-speed test ride: The braking distance should be within 1.5 meters (at 20km/h). It is qualified if there is no abnormal noise or deviation.
3. Drum Brake System Replacement Steps
Step 1: Remove the Rear Wheel & Brake Drum
- Remove the rear wheel according to the tire replacement steps, loosen the drum brake adjustment screw, use needle-nose pliers to remove the brake drum fixing spring, and pull out the brake drum;
- Check the inner wall of the brake drum: If it is severely worn or has grooves, replace the brake drum together.
Step 2: Replace the Brake Shoes
- Use needle-nose pliers to remove the tension spring connecting the old brake shoes and take out the old shoes;
- Install the new brake shoes in the original position, hang the tension spring (note the direction of the spring hook faces the front), and adjust the position of the brake shoes to ensure uniform clearance with the inner wall of the brake drum.
Step 3: Reset & Debugging
- Reinstall the brake drum and rear wheel, and tighten the axle nut;
- Adjust the brake cable tightness: When squeezing the brake lever, the travel should be 1-2cm. The rear wheel should lock quickly without dragging during braking;
- Test Ride Inspection: When squeezing the brake with no load, the rear wheel should stop rotating. There should be no continuous friction noise during riding.
Related News
Read More >>
Urban Commuting vs. Off-Road A
02 .12.2026
Introduction: Why Scenario Determines Your E-Bike ChoiceElectric bikes are no lo
How to Replace the Brake Syste
02 .12.2026
Brake System Replacement Tutorial (Covers Disc & Drum Brakes)1. Preparation Tool
How to Replace an Electric Veh
02 .12.2026
Tire Replacement Tutorial (Universal for Front & Rear Wheels, Beginner-Friendly)
How to Customize Your Electric
02 .11.2026
How to Customize Your Electric Bike: Stickers, Lights & Accessories IdeasElectri