How to Replace Brushes on Cordless Drill: A Step-by-Step Guide

If you are a handy person, then you most likely own a cordless drill. Cordless drills are versatile tools that can be used on a variety of projects, from fixing a squeaky door hinge to building a treehouse. However, with frequent use, the motor brushes of your cordless drill may wear out and need replacement.

If you are unsure of how to replace brushes on cordless drills, don’t panic. This process is relatively straightforward and can be done in a few easy steps. You don’t need to be a DIY expert to tackle this task, but it does require basic knowledge of how the drill works and a bit of patience.

Once you replace the brushes, your cordless drill will be ready to use once again. Replacing the brushes on your cordless drill can extend the life of your tool and save you money in the long run. With a few tools and a little bit of know-how, you can easily replace the brushes on your cordless drill and have it back in your toolbox in no time.

In this blog post, we’ll guide you through the process of replacing the brushes on your cordless drill, step by step. Are you ready to dive in?

Gather Tools and Materials

Replacing the brushes on your cordless drill can help prolong its lifespan and ensure that it runs smoothly. To get started, you’ll need a few tools and materials. First, you’ll need to identify the type of brush your drill has, as this will determine the replacement brushes you’ll need.

You can usually find this information in your drill’s user manual or by contacting the manufacturer. Next, gather a small Phillips head screwdriver, pliers, and replacement brushes for your specific drill model. It’s also a good idea to have a clean cloth on hand to wipe down any debris or dust that may have accumulated inside your drill.

With these tools and materials, you’re ready to begin replacing your drill’s brushes.

List of Required Tools and Materials

When it comes to starting a new project, the first thing you’ll need is to gather all the necessary tools and materials. It can be a bit overwhelming at first, but don’t worry, we’ve got you covered. Depending on your project, the list of required tools and materials can vary, but there are some basics that you’ll need no matter what.

First and foremost, you’ll need a good set of tools such as a hammer, screwdrivers, pliers, and a measuring tape. Additionally, you’ll need the appropriate materials such as nails, screws, and various types of wood, depending on your project. Don’t forget safety equipment, such as gloves, goggles, and a mask, especially if you’re working with power tools.

It’s always better to be safe than sorry! With these tools and materials in hand, you’ll be ready to tackle any DIY project with confidence and ease.

how to replace brushes on cordless drill

Remove Old Brushes

Replacing the brushes on your cordless drill is a simple task that can improve its performance and prolong its lifespan. The first step is to remove the old brushes, which are typically located at the rear of the tool. To do this, you will need to unscrew the plastic caps or covers that protect the motor from debris and dust.

Once removed, gently pull out the brushes, taking care not to damage the armature or commutator. It’s important to note that brushes have a limited lifespan and will need to be replaced periodically, especially if you use your drill frequently. By replacing your brushes and maintaining your drill regularly, you can ensure that your tool remains in top working order and is always ready to tackle your next project.

Locating and Removing the Old Brushes

One of the first steps in repairing an electric motor is locating and removing the old brushes. The brushes are small, carbon blocks that help conduct electricity from the power source to the rotating parts of the motor. Over time, these brushes wear down and become less efficient, causing the motor to run poorly or not at all.

To remove the old brushes, you’ll need to first disconnect the motor from its power source and remove any protective covers. Next, locate the position of the brushes inside the motor and gently ease them out with a pair of pliers. It’s important to make note of the direction the brushes are facing before removing them to ensure proper replacement.

Once the old brushes are out, you can clean the brush holders and commutator to prepare for the installation of new brushes. By taking the time to carefully remove the old brushes, you’ll be on your way to restoring your electric motor to its full working potential.

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Clean the Drill Motor

If you’re experiencing a decrease in power or performance from your cordless drill, it may be time to replace the brushes. But before doing so, it’s important to clean the drill motor to ensure optimal function. Start by disassembling the drill and removing any debris or dust that has accumulated inside.

Use a can of compressed air to blow out any remaining particles. Next, inspect the motor’s contacts for signs of corrosion or damage. If they appear worn or corroded, use a small wire brush to gently clean them.

Finally, lubricate any moving parts with a light oil to improve overall performance. By cleaning the drill motor before replacing the brushes, you can help extend the life of your tool and prevent future issues. So, if you’re wondering how to replace brushes on cordless drill, be sure to start with a clean motor first.

Cleaning the Drill Motor Before Installing New Brushes

When it comes to replacing brushes in your drill motor, it’s important to take the time to clean it properly before installation. Cleaning the motor ensures that there is no debris or dust trapped inside that could interfere with the performance of the new brushes. To clean your drill motor, start by disconnecting it from the power source and removing the housing.

Then, use a soft brush or compressed air to clean out any dust or debris. Be careful not to damage any of the internal components while cleaning. Once you’ve finished cleaning, you can install your new brushes with confidence, knowing that they’ll be able to perform at their best with a properly cleaned motor.

Remember, keeping your drill motor clean isn’t just important when it comes to installing new brushes, but it’s also essential for ensuring the longevity of your power tools. So don’t neglect your clean-up duties – your drill motor will thank you for it!

Installing New Brushes

So, you’ve been noticing your cordless drill isn’t running as smoothly as it used to, or maybe it’s not working at all. The culprit could be worn out brushes. But don’t worry, replacing them is a relatively simple process.

First, make sure you have the correct replacement brushes for your specific drill model. Then, locate the brush caps, usually found on the sides of the drill’s motor housing. Using a screwdriver, carefully remove the brush caps and take out the old brushes.

Insert the new brushes and push them in until they are secure. Finally, replace the brush caps and test out your newly replaced brushes. Keep in mind that brushes wear out over time and will need to be replaced periodically to keep your cordless drill running smoothly.

Overall, replacing the brushes on a cordless drill is an easy task that will save you time and money in the long run.

Preparing and Installing the New Brushes

When it comes to replacing old brushes with new ones, the process is fairly straightforward. The first step is to purchase brushes that are compatible with your specific tool model. Once you have your new brushes, it’s time to install them.

Start by removing any covers or housing that may be hiding the brushes. Carefully extract the old brushes and observe their placement. This will help you properly orient the new brushes when installing them.

Take the new brushes and gently insert them into their respective slots. Make sure they fit snugly and securely. Once you have confirmed that the brushes are aligned correctly, reattach the housing or covers.

Now you’re ready to get back to work with a tool that is running as good as new. Remember, always consult your tool’s user manual for specific instructions and safety guidelines.

Test and Replace the Motor Cover

Replacing the brushes on a cordless drill is a necessary task that every DIYer should know how to do. However, before you even start replacing the brushes, it’s important to test and replace the motor cover if required. A drill motor cover is designed to protect the armature and other essential parts of the motor.

If you notice cracks or other damages to the cover, it’s time to replace it. To test the motor cover, remove it from the drill and inspect it thoroughly. Look for any cracks, breaks or other damages along the body of the cover.

Gently press on the cover to see if it is still sturdy or feels flimsy. If there are visible damages or it feels loose, it’s time to replace the cover before proceeding to replace the brushes. Replacing the motor cover is a simple process.

Start by finding the screws that hold the cover in place and use a screwdriver to remove them. Once the screws are removed, gently lift the cover off and set it aside. Take your new motor cover and place it in position, making sure it aligns with the existing holes.

Screw the new cover in place until it is secure. By following these simple steps, you’ll be able to replace the motor cover on your cordless drill, ensuring that it is sturdy and providing the necessary protection for the motor. Remember that it’s important to test and replace any damaged parts before proceeding to replace the brushes.

Doing so will help extend the lifespan of your cordless drill and ensure that it performs at its best.

Replacing the Motor Cover and Testing the Drill

After replacing the damaged motor cover on your drill, it’s crucial to test it out to make sure everything is running smoothly. Before proceeding, make sure the power source is off. Once you’ve done that, turn on the drill and give it a try.

If there is no unusual noise or vibration, you’re good to go. However, if you notice any abnormal behavior, turn off the power source immediately and investigate further. It’s possible that there could be other components that were damaged along with the motor cover, such as the gears or the chuck.

This is especially critical if you’re working with heavy-duty tasks, where a malfunctioning drill can cause serious harm. Always double-check everything before using power tools and never take chances. Remember, a small issue like a damaged motor cover can escalate into a bigger problem if not dealt with properly.


In summary, replacing brushes on a cordless drill might seem like a daunting task, but with a few simple steps and a little bit of elbow grease, you’ll have your trusty tool up and running in no time. Just remember to unplug the drill and take note of which way the old brushes were facing before removing them. With a steady hand and a willingness to get your hands dirty, you’ll be back to drilling like a pro in no time.

And who knows? Maybe you’ll even impress your friends with your newfound brush replacement skills. Happy drilling!”


What are the signs that indicate you need to replace the brushes on a cordless drill?
If the motor is slow, sparks are visible, or the drill stalls or stops, it’s time to replace the brushes.

How often should you replace the brushes on a cordless drill?
The frequency of brush replacement depends on how frequently the drill is used. However, it’s typically recommended to replace the brushes every 50 to 100 hours of use.

What tools do you need to replace the brushes on a cordless drill?
You’ll need a screwdriver, a small hammer, and a pair of needle-nose pliers to replace the brushes on a cordless drill.

Can you replace the brushes on a cordless drill by yourself?
Yes, you can replace the brushes on a cordless drill by yourself with the right tools and instructions.

Where can you find replacement brushes for a cordless drill?
You can find replacement brushes for your cordless drill at your local hardware store or online.

How do you know which brushes to buy for your specific cordless drill model?
You can check your drill’s user manual for information on the correct replacement brushes for your specific model.

What should you do if the brushes continue to wear out quickly after replacement?
If the brushes continue to wear out quickly after replacement, it could be a sign of an underlying problem with the drill that should be inspected by a professional.

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