Guidelines for Properly Turning Drum Brake Components for Optimal Performance

Understanding Drum Brake Turning Ensuring Optimal Performance and Safety

Drum brakes are a crucial component of many vehicles, especially those equipped for heavy-duty applications such as trucks and some older passenger cars. While disc brakes are gaining popularity due to their superior performance, drum brakes remain prevalent due to their reliability and effectiveness in certain conditions. One essential maintenance procedure for drum brakes is the turning of the drum. This article delves into the significance of drum brake turning, the process involved, and the benefits that come with it.

What is Drum Brake Turning?

Drum brake turning, often referred to as resurfacing, is a process designed to restore the surface of the brake drum to its original specifications. Over time, the contact surfaces of brake drums can become worn, uneven, or grooved due to constant friction from the brake shoes. This deterioration can lead to a host of problems, including decreased braking efficiency, increased stopping distances, and excessive noise during operation. Turning the drum involves machining the surface to remove imperfections, thereby improving overall brake performance.

The Importance of Turning Brake Drums

Turning brake drums is not merely a maintenance task but a critical step in ensuring vehicle safety. When the braking surface is uneven, it can cause brake shoes to wear unevenly as well, leading to further complications in the braking system. Uneven wear can result in a phenomenon known as brake fade, where the brakes become less effective as they heat up. This condition is dangerous and can impair a driver's ability to stop the vehicle smoothly.

Additionally, when drums are turned, the mechanic can inspect them for any signs of cracks or stress fractures. Worn or damaged drums can compromise the integrity of the braking system and must be replaced if they do not meet manufacturer specifications. Therefore, routine drum brake turning is essential for safety and reliability.

The drum turning process typically involves the following steps

1. Removal The mechanic removes the drum from the vehicle by disassembling the brake assembly. 2. Inspection The drum is then inspected thoroughly to assess its condition. Any visible signs of damage or excessive wear are noted.

3. Turning If the drum is still within acceptable limits, it is placed on a brake lathe, which machines the surface to create a smooth, even finish. This process removes any imperfections and ensures the drum is balanced.

4. Reinstallation After turning, the drum is reinstalled onto the vehicle, and the brake assembly is reassembled.

5. Testing Finally, a road test is conducted to ensure that the brakes function correctly and safely.

Benefits of Regular Drum Brake Turning

Regular drum brake turning has several benefits. It promotes smoother braking performance, prolongs the lifespan of brake components, and enhances overall safety by maintaining optimal brake function. Moreover, it can save drivers from more costly repairs down the line by addressing wear issues before they escalate.

In conclusion, drum brake turning is an essential aspect of vehicle maintenance. By ensuring that brake drums are properly resurfaced and inspected, drivers can enjoy safer driving experiences, reduce the cost of repairs, and maintain their vehicle’s operational efficiency. Regular attention to this often-overlooked component can make a significant difference in vehicle performance and safety.