Brake Bleeding (Hydraulic Systems)
If your e-bike's hydraulic brake lever feels spongy or pulls to the bar, air in the lines is usually the cause. Bleeding the brakes removes the air and restores a firm, responsive feel.
Find a TechnicianCommon causes
- Air trapped in the hydraulic lines
- Old or contaminated brake fluid
- Lever feeling soft or spongy
- Brake fade after heavy use
- Fluid level low from a small leak
- Routine service after a hose change
Frequently asked questions
Why does my hydraulic brake lever feel spongy?
Air in the lines compresses where fluid shouldn't, giving a soft lever. Bleeding removes the air and firms it up.
How often should hydraulic brakes be bled?
Typically once a year or when the lever feels soft, more often if you ride hard or in wet conditions.
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