Why is the handbrake not holding tight?

[Lacey]

The handbrake cannot hold even when pulled to the top. You can adjust the tension wheel yourself, and slightly rub the drum after installation. More information about the handbrake is as follows: 1. Overview: The parking brake, commonly known as the handbrake, functions to provide resistance to the car when parked, preventing it from rolling. The parking brake, also known as the handbrake or the parking gear in automatic transmissions, locks the drive shaft or rear wheels. The force of the parking brake is much less than that of the service brake, just enough to prevent the car from rolling on a slope. 2. Others: The Electronic Parking Brake (EPB: Electrical Park Brake) integrates the temporary braking during driving and the long-term braking after parking, and realizes the parking brake through electronic control. The electronic handbrake is a technology that realizes parking braking through electronic control. Its working principle is the same as that of the mechanical handbrake, both of which use the friction between the brake disc and the brake pads to achieve parking braking, except that the control method has changed from the previous mechanical handbrake lever to an electronic button.