About This Guide
Engineered for the daily commute and everything aftWorn brake pads can reduce braking performance and cause scraping or rubbing noises. This guide explains how to replace the pads, centre the brake caliper, correct disc rubbing, and complete a final brake test.
Before starting work on your JOFEN electric scooter, confirm that the brake assembly and replacement pads are compatible with the procedure shown. Do not assume that every model uses the same brake components.er it.
Before You Begin: Warning Signs, Tools and Safety
When to inspect the pads
Check the brake pads if braking distance has increased, the brake lever needs to be pulled farther than before, or the brakes produce scraping or grinding sounds. Very thin or uneven friction material and braking that remains weak after normal adjustment are also warning signs.
Tools and parts
Prepare a 5 mm Allen key, compatible replacement brake pads, needle-nose pliers, protective gloves, and disc-brake cleaner if required.
Safety first
Turn the scooter off and support it securely before starting. Allow the brakes to cool if the scooter has recently been ridden. Do not touch the brake disc with oily hands, and keep lubricant away from the disc and brake-pad surfaces.
Step 1: Switch Off the Scooter and Prepare the Tools
Turn the scooter off completely and place it on a stable support. Make sure the wheel and brake caliper are easy to access without the scooter moving during the repair.
Have a 5 mm Allen key ready. If the scooter was recently ridden, wait for the brake components to cool.
Before removing anything, compare the replacement pads with the original brake assembly to confirm compatibility.
Step 2: Remove the Caliper and Retaining Wire
Use a 5 mm Allen key to remove the upper and lower caliper mounting bolts.
Carefully lift the caliper away from its mounting bracket.
Use needle-nose pliers to remove the retaining wire that secures the brake pad pin before taking out the pin.
Step 3: Remove the Old Pads and Fit the New Pads
Note the position and orientation of the original pads before pulling them out of the caliper.
Fit the replacement pads in the same orientation, with the friction surfaces facing the brake disc.
Keep oil and grease away from the new pads and all braking surfaces during installation.
Step 4: Align the Caliper with the Brake Disc
Position the caliper over the brake disc so that the disc sits between the two replacement pads.
Check the alignment and make sure the disc can move freely without pressing against either pad.
Keep the mounting bolts slightly loose at this stage so that the caliper position can still be adjusted. Do not fully tighten them before completing the final alignment.
Step 5: Centre the Caliper and Tighten the Bolts
Squeeze and hold the brake lever to clamp the disc between the pads and centre the caliper.
While holding the lever, tighten the two mounting bolts gradually and alternately until the caliper is securely attached.
Release the brake lever and check that the disc rotates freely without rubbing.
Step 6: Check for Rubbing and Fine-Tune the Position
Spin the wheel by hand and listen for rubbing between the brake disc and the pads. The wheel should rotate smoothly without continuous rubbing.
If rubbing remains, slightly loosen the mounting bolts and adjust the caliper position.
Tighten the bolts again and repeat the wheel-spin check. Complete the final safety checks below before carrying out a low-speed brake test.
Troubleshooting: Common Problems After Replacement
Why does the brake disc keep rubbing after replacement?
The caliper may be positioned too far to one side. Loosen both mounting bolts, shift the caliper slightly, and repeat the alignment procedure. Tighten the bolts again and check that the wheel rotates without continuous rubbing.
Why is the wheel difficult to turn?
One or both brake pads may be pressing firmly against the disc. Check that the pads are installed correctly and that there is even clearance on both sides of the disc.
Why does braking still feel weak with new pads?
New pads may need bedding-in, or the braking surfaces may be contaminated. Recheck the installation, clean the disc if required, and complete a controlled bedding-in process. Avoid high-speed riding until braking performance is stable and predictable.
What causes uneven brake pad wear?
Uneven wear may indicate that the caliper is not centred or that the brake disc is misaligned. Re-centre the caliper and inspect the disc for bending or damage.
Final Safety Check Before Riding
Before riding, confirm that the caliper mounting bolts are secure, the replacement pads are fully seated, and the brake disc sits correctly between both pads.
Spin the wheel and make sure it rotates without strong resistance. Check that the brake lever engages and releases normally.
Carry out a low-speed brake test and confirm that the scooter stops reliably.
New brake pads may need a short bedding-in period. Avoid high-speed riding until braking performance is stable and predictable.
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