1. Improper brake adjustment
2. Wear of the brake shoe block and friction plate component
3. Improper installations of the brake shoe block and friction plate component
4. The brake shoe block and friction being polluted
Slow response of the brake or the tightness of the handle
1. Improper adjustment of the brake
2. Wear of the brake shoe block and friction plate component
3. Improper installation of the brake shoe block and friction plate component