Adjusting the role of the arm
The function of the adjusting arm is to adjust the brake clearance of the brake, which refers to the clearance between the brake drum and the brake liner. In the process of using the car, frequent braking will lead to continuous wear of brake components, resulting in the increase of the gap between the brake drum and the shoe to varying degrees, resulting in pedal stroke lengthening, brake chamber thrust reduction, braking lag and braking force reduction. In order to ensure the safety of the vehicle, maintain the relative stability of pedal travel and the balance of work between the brakes, it is necessary to adjust the brake clearance (the adjustment is only used in the process of adjustment) to adjust and control the braking function and sensitivity. According to the way of adjustment, it is divided into manual adjustment arm and automatic adjustment arm.