how to turn brake drums

How to Turn Brake Drums A Step-by-Step Guide

Turning brake drums is a crucial maintenance task that enhances the performance of your vehicle’s braking system. Over time, brake drums can become warped or worn, leading to reduced braking efficiency and increased stopping distances. This guide provides a comprehensive overview of how to properly turn brake drums.

Tools and Materials Needed

Before starting, ensure you have the following tools and materials

1. Brake drum lathe 2. Safety goggles 3. Wrenches and sockets 4. Hammer 5. Brake cleaner 6. Measuring tools (calipers) 7. New brake shoes (if necessary)

Step 1 Safety First

Always prioritize safety. Wear safety goggles to protect your eyes and ensure you’re working in a well-ventilated area. Make sure the vehicle is on a flat surface and securely lifted with jack stands.

Begin by using a wrench to remove the lug nuts and take off the wheel. Once the wheel is removed, detach the brake drum. This may require you to remove the brake shoes and any retaining clips. Gently tap the drum with a hammer if it’s stuck.

Step 3 Inspect the Brake Drum

Once the drum is off, inspect it for any visible signs of wear or damage. Measure the thickness of the drum using calipers. If the drum is below the minimum thickness specified by the manufacturer, it should be replaced rather than turned.

Step 4 Setting Up the Lathe

Place the brake drum onto the lathe and secure it properly. Ensure all safety protocols for the lathe are followed. Adjust the cutting tool to the correct depth as per the manufacturer’s recommendations, typically 0.010 to 0.020 inches, to ensure a smooth surface.

Step 5 Turning the Drum

Turn on the lathe and slowly feed the cutting tool into the drum. Watch the process carefully, ensuring that the drum remains balanced and that even pressure is applied. This step is crucial for achieving a uniform surface.

Step 6 Finish and Inspect

Once the turning process is complete, clean the drum thoroughly with brake cleaner to remove any metal shavings. Inspect the surface finish visually and with a micrometer to ensure it meets specifications.

Step 7 Reassemble and Test

Reassemble the brake components, including the brake shoes. Once everything is in place, reinstall the wheel, lower the vehicle, and torque the lug nuts to the manufacturer’s specifications. Finally, conduct a test drive to ensure the brakes function smoothly.

In conclusion, turning brake drums is a straightforward process that can significantly improve your vehicle’s braking system. Regular maintenance not only prolongs the life of your brake components but also ensures safety on the road.