Sinotruk Howo Brake System Spare Parts Rear Brake Drum AZ9231342006

Introduction to rear brake drum AZ9231342006

Rear brake drum AZ9231342006 is one of the key components in the automobile braking system, mainly used for rear wheel braking of vehicles. It is usually made of high-quality cast iron and other materials, with good wear resistance, heat resistance and mechanical strength. Its structural design is scientific and reasonable, and a circular cavity is formed inside to accommodate components such as brake shoes. During braking, when the driver steps on the brake pedal, the transmission medium such as brake fluid or compressed air will push the brake shoe to expand outward, so that it fits tightly with the inner wall of the rear brake drum. Due to the friction between the two, the rotation speed of the wheel will decrease rapidly, thereby achieving deceleration or parking of the vehicle. The dimensional accuracy and surface quality requirements of the rear brake drum AZ9231342006 are high to ensure that the brake shoe and the brake drum can maintain a good matching clearance, thereby providing stable and reliable braking force. At the same time, it also has good heat dissipation performance, which can effectively dissipate the heat generated by braking during frequent braking, preventing the brake drum from deforming and increasing wear due to overheating, thereby ensuring the safety and reliability of the vehicle's braking system and extending the service life of the brake drum and the entire braking system.

The working principle of the rear brake drum AZ9231342006 is as follows:

♦ Braking process: When the driver steps on the brake pedal, the pedal force is transmitted to the brake master cylinder after being assisted by the vacuum booster. The brake master cylinder sends hydraulic oil pressure into the brake pipe and brake hose. Under the action of hydraulic pressure, the brake wheel cylinder piston pushes the brake shoe outward to make it in close contact with the inner wall of the brake drum AZ9231342006. Due to the large friction between the brake shoe and the brake drum, the friction will hinder the rotation of the brake drum, thereby reducing the speed of the wheel, and finally achieving the deceleration or parking of the vehicle.
♦ Assistance principle: The working principle of the brake drum also involves the assistance of the vacuum booster. When the engine is working, it will inhale air, causing a vacuum on one side of the booster and a pressure difference compared to the normal air pressure on the other side, thereby increasing the braking thrust, that is, increasing the force applied by the driver on the pedal through vacuum (negative pressure), allowing the driver to step on the brake pedal more easily and obtain greater braking force.
♦ Release the brake: When the driver releases the brake pedal, the hydraulic pressure of the hydraulic system drops, and under the action of the return spring, the brake wheel cylinder piston returns to its original position, the brake shoe and the brake drum are separated, the friction between the two disappears, and the wheel resumes free rotation.