Views: 552 Author: Site Editor Publish Time: 2023-04-03 Origin: Site
The working surface of the brake drum is generally completed after assembly with the wheel hub with the positioning of the bearing bore. The minicar requires that the working surface's roundness and coaxiality tolerance be less than or equal to 0.03 mm, the concentricity error less or equal to 0.05 mm, and the static imbalance less or equal to 1.5 N. cm.
How does a brake drum work?
How is the brake drum working?
What should I pay attention to when using brake drums?
To maintain a good braking effect, an optimal distance between the brake shoe and the brake drum must be available. When the friction liner wears out, the gap between the brake shoe and the brake drum increases, and a mechanism for adjusting the gap is required. In the past, the air clearance of drum brakes had to be adjusted manually, and the air clearance was adjusted with a sensor gauge. The improved car drum brakes all use an automatic adjustment procedure, and the distance between the friction pad and the brake drum is automatically adjusted after the friction pad wears out. When the play increases and the brake shoe ejection amount exceeds a certain range, the adjustment play mechanism pulls the adjusting rod (locking latch) into the position where it engages in the next tooth of the adjusting tooth, thereby increasing the length of the adjusting tooth connecting rod and making the brake shoe position shift, return to the normal distance.
brake drums are usually used for rear wheels (disc brakes for front wheels). In addition to the low cost of the brake drum, there is another advantage, namely the easy combination with the parking brake (parking brake). In all vehicles with drum brakes on the rear wheels, the parking brake is also combined on the rear brakes. This is a mechanical system that is completely separated from the hydraulic system of the brake on the vehicle: the hand lever or the parking pedal tightens the steel cable, the lever of the drum brake is actuated to spread the brake shoes and the parking brake is tightened. function so that the car does not slip; Release the steel cable, the return spring returns the brake shoe to its original position and the braking force disappears.
Please try to drive in a place with better road conditions, avoid sudden braking and frequent braking, refill the prescribed type of transmission oil and pay attention to the filling quantity. The bearing clearance must be adjusted in the workshop.
Treatment method: Please do not pour water on the brake drum for cooling, the brake drum cools suddenly and shrinks unevenly, which can easily cause cracks. After the temperature of the brake drum of the vehicle has dropped, drive the vehicle slowly to the workshop for inspection.
Are you interested in ordering brake drums after reading these words? If necessary, you can contact XIAMEN WONDEE AUTOPARTS CO., LTD., a leading brake drum manufacturer.
