1. Abnormal oil Insufficient/leaking brake oil: Check the oil level in the reservoir and the sealing of the pipeline, replenish or replace the oil, and repair the leakage point. Oil deterioration: High water content reduces boiling point, and new brake oil needs to be completely replaced. 2&#...

1. Components stuck or corroded Pump/caliper malfunction: The piston cannot return smoothly due to impurities, rust, or insufficient manufacturing accuracy. It is necessary to clean and lubricate the piston or replace the caliper. Rust on the guide pin: The lack of lubrication on the pin causes t...

Insufficient lubrication is the main cause, and special lubricating grease can be added to the bearings and transmission gears; If it is ineffective, consider replacing the worn parts.