Learn How to Remove a Brake Drum

Table of Contents

1. Introduction
2. Understanding the Brake Drum
3. Reasons for the Brake Drum Getting Stuck
   • Emergency Brake Engagement
   • Corrosion on the Flange
   • Rust on the Centering Device
4. Removing Rust from the Flange
   • Using a Grinder with a Wire Wheel
   • Using a File
   • Using Sandpaper
5. Methods to Remove the Stuck Brake Drum
   • Using Push Bolts
   • Using a Three Jaw Puller
   • Avoiding Prying with a Screwdriver
   • Using a Punch and Hammer
6. Safety Precautions while Removing the Brake Drum
   • Avoiding Damage to the Axle
   • Preventing Damage to the Backing Plate
7. Adjusting the Brake Drum for Removal
   • Backing Off the Adjuster
8. Conclusion

How to Safely Remove a Stuck Brake Drum

Brake drums can sometimes become stuck and difficult to remove. This can be due to various reasons such as the emergency brake being engaged, corrosion on the flange, or rust on the centering device. In this article, we will explore the different causes of a stuck brake drum and provide step-by-step instructions on how to safely remove it.

Introduction

When working on your vehicle's brake system, it is essential to know how to remove a stuck brake drum properly. This task can be challenging if you are not familiar with the correct techniques and precautions. Understanding the reasons behind a stuck brake drum and knowing the appropriate methods for removal will ensure a smooth and successful process.

Understanding the Brake Drum

Before we dive into the details of removing a stuck brake drum, let's briefly understand what a brake drum is. A brake drum is a circular iron or steel component that is an integral part of a drum brake system. It is attached to the wheel and rotates along with it. When the brake pedal is pressed, the brake shoes inside the drum expand and Create friction, causing the vehicle to slow down or stop.

Reasons for the Brake Drum Getting Stuck

There are several reasons why a brake drum may become stuck and difficult to remove. Let's explore these reasons in Detail:

1. Emergency Brake Engagement

One common cause of a stuck brake drum is the engagement of the emergency brake. If the emergency brake is engaged, it can prevent the drum from rotating freely, making it challenging to remove. Before attempting to remove the drum, always ensure that the emergency brake is fully released.

2. Corrosion on the Flange

Another reason for a stuck brake drum is corrosion on the flange. The brake drum is sandwiched between the brake shoes and the flange for the axle. Over time, corrosion can build up on the flange, causing the drum to stick to it. To overcome this, it is necessary to clean the rust and corrosion from the flange before attempting to remove the drum.

3. Rust on the Centering Device

The centering device, located at the stub of the axle, plays a crucial role in centering the brake drum onto the axle. Rust and corrosion on this surface can prevent the drum from coming off smoothly. It is essential to remove any rust or aluminum buildup from the centering device to ensure the drum can be easily removed.

Removing Rust from the Flange

To prepare the brake drum for removal, it is crucial to remove any rust or corrosion from the flange. There are several methods You can use to accomplish this:

1. Using a Grinder with a Wire Wheel

One effective method is to use a grinder with a wire wheel attachment. This will allow you to clean the rust off the flange by going around its outer surface. Ensure that you have proper access and safety precautions in place when using a grinder.

2. Using a File

If you don't have a grinder or need to reach tight spaces, using a file can be an alternative. A half-round file can provide a sharper edge, allowing you to work around the flange's outer surface and remove the rust effectively.

3. Using Sandpaper

Another option is to take a piece of sandpaper and fold it over. Work the folded sandpaper around the outside of the flange to remove any material or corrosion buildup. This method is suitable for smaller areas and can be done by HAND.

Remember not to remove too much material from the flange, as it is essential for centering the wheel and tire properly.

Methods to Remove the Stuck Brake Drum

Once you have cleaned the rust from the flange, it's time to remove the stuck brake drum. Several methods can be employed to achieve this:

1. Using Push Bolts

Using push bolts is a popular and effective method for removing stuck brake drums. These push bolts are threaded into pre-drilled holes in the drum assembly. By turning the bolts, you create pressure to push the drum off the flange. Ensure that the push bolts have the proper thread size and pitch for your specific vehicle.

2. Using a Three Jaw Puller

If you don't have access to push bolts, or the drum is exceptionally stubborn, a three jaw puller can be used. This tool is placed behind the drum and, when tightened, applies pressure to pull the drum off. Care must be taken not to damage the axle or the bearings when using this method.

3. Avoiding Prying with a Screwdriver

It is important not to attempt prying with a screwdriver between the backing plate and the drum. This can result in bending the backing plate and causing misalignment of the brake shoes with the drum's friction surface.

4. Using a Punch and Hammer

Another method is to take a punch and a hammer and work on the outside of the drum to break it loose. Be cautious when using this method, as excessive force can damage the axle or bearings. Use controlled and precise strikes to avoid any negative consequences.

Safety Precautions while Removing the Brake Drum

When removing a stuck brake drum, it is essential to take certain safety precautions to prevent any damage or accidents. Consider the following:

1. Avoid Damage to the Axle: When using tools or applying force, be mindful not to cause any damage to the axle or its components. Excessive force or incorrect techniques can lead to costly repairs.

2. Prevent Damage to the Backing Plate: As Mentioned earlier, avoid prying with a screwdriver, as it can bend the backing plate and misalign the brake shoes. Damaged backing plates can result in brake system inefficiencies.

Adjusting the Brake Drum for Removal

Sometimes, the drum may still seem stuck even after employing the various removal methods. In such cases, it may be necessary to adjust the drum to facilitate its removal. This can be achieved by backing off the adjuster, which allows for more clearance between the drum and the brake shoes.

To do this, access the adjuster through the drum's backside. Carefully and gradually back off the adjuster while applying some tension to the drum. This will create enough space to remove the drum comfortably.

Conclusion

Removing a stuck brake drum requires patience, knowledge, and proper techniques. By understanding the reasons behind a drum getting stuck and implementing the appropriate removal methods, you can successfully remove a stuck brake drum without causing any damage to your vehicle's brake system. Remember to prioritize safety precautions and consult a professional if you are unsure about any step of the process.