Rear and front brake drum for my car

Replace a Spare part Brake drum – a defective one or if the limit of use has been already reached. Find out useful information about Brake drum

• wear or damage to the brake drum;
• uneven wear of the drums;
• damage to the working surface of the brake drum;
• deformation;
• excessive clearance between the drums and pads.

• occurrence of vibration when you press the brake pedal;
• abnormal sounds during braking (whistling, squeaking, grinding, knocking);
• the wobbling of the brake pedal and steering wheel;
• increase in the braking distance.

• exceeding the Drum brakes lifespan;
• improper use of the system;
• use of low quality materials and spare parts;
• getting of dirt or foreign objects in the drum;
• oil getting on the working surface of the drum;
• wear or damage to the hold down drum springs;
• aggressive driving style.

Independently, you can do the actual assessment of the braking system. To do this, accelerate the car on a flat dry road up to 60-80 km/h and press the brake pedal. The path should be smooth, without vibration and strange sounds. You should repeat the experiment several times. Such diagnostics of braking path is carried out every 20 000-30 000 kilometers. Service and cleaning system from dirt should be done every 10 000 kilometers.

Serviceshop specialists will analyze the internal state of the system. The drum surface must be smooth, and the maximum diameter shall not exceed 204.4 mm (at a nominal drum size of 181.25 mm). Depending on the vehicle model and the type of drums exceeding the maximum diameter should not be more than 12% of the nominal diameter of the drum.

Analysis of the brake system is also carried out on a special brake stand, where the resistance of each wheel is measured at different loads.

Scratches on the working surface of the drum is a defect that can be eliminated in a service shop without having to replace the part itself. Firstly, it allows to remove the initial symptoms of brake drum failure(vibration and wobbling, and increase in the stopping distance). Secondly, it is much cheaper than replacement.

Grooving the drum is a mechanical impact on the work surface to return to its original state. Thus, using a lathe a mechanic removes the damaged top layer. Minimum thickness of the drum should be learned from the manufacturer. Modern automatic lathe allows you to process the operation with the highest precision.

In the presence of cracks or visible damage to the drum it is necessary to make a replacement. It is recommended to be carried out in a service shop. The fact is that the calibration of the brake system must be carried out with high accuracy to avoid premature wear or damage to the parts.