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

how to replace brushes on a milwaukee cordless drill

Power tools make our everyday tasks much easier, but even the best ones need a little maintenance every now and then. If you own a Milwaukee cordless drill, one of the most common repairs you may encounter is changing out the brushes. These small components make up an important part of the drill’s motor, and over time, they can wear down, preventing your tool from working at full capacity.

But don’t worry, replacing the brushes is a relatively simple DIY job that any tool-savvy person can do with a little guidance. In this blog post, we’ll guide you through the step-by-step process of replacing the brushes on your Milwaukee cordless drill so you can get your tool back in tip-top shape. So, grab your tool kit and let’s get started!

Gather Necessary Tools and Safety Equipment

When it comes to replacing the brushes on your Milwaukee cordless drill, it’s essential to gather all the necessary tools and safety equipment before diving in. You’ll need a screwdriver, pliers, and a replacement set of brushes that are compatible with your drill model. It’s also essential to put on safety gear, including goggles to protect your eyes from any debris, gloves to protect your hands, and a mask to prevent inhaling any dust particles.

Taking the time to gather all the necessary tools and protective gear upfront can ensure that the process goes smoothly and safely. So, before you start replacing the brushes, make sure to have everything you need at hand.


When it comes to starting any kind of project, the first step is always gathering the necessary tools and equipment related to the task. This is especially true when it comes to any DIY project, whether it’s a home renovation or constructing a new piece of furniture. It’s essential that you have all the required tools and equipment to ensure that the work goes smoothly and safely.

Make sure to read up on what materials you need for the project and check your inventory to ensure you have everything you need. Don’t forget to invest in safety gear as well to protect yourself from injury. This includes the likes of gloves, safety goggles, and a dust mask.

It’s better to be safe than sorry! By having everything you need ahead of time, you increase the chances of completing the project with ease and efficiency. This way, you will be able to create something with confidence and pride knowing that you had everything you needed to make it happen.

how to replace brushes on a milwaukee cordless drill

Safety Equipment

When it comes to DIY projects, it’s crucial to have the right tools and safety equipment. Before starting any project, you’ll want to gather the necessary items to ensure your safety and the success of your project. This includes items such as safety glasses, gloves, earplugs, and a respirator.

Safety glasses will protect your eyes from any flying debris or dust, while gloves will protect your hands from sharp tools and chemicals. Earplugs are essential if you will be using loud power tools, and a respirator will protect you from breathing in harmful particles. Gathering these items may seem tedious, but it’s vital to ensure your health and well-being.

Remember, a successful project is a safe project. So, don’t forget to gather all the necessary tools and safety equipment before starting your DIY project.

Prepare Your Drill for Brush Replacement

If you’re experiencing a decrease in power and efficiency with your Milwaukee cordless drill, it may be time to replace the brushes. The brushes are responsible for transferring electricity to the motor and over time, they can wear out, resulting in decreased performance. Before replacing the brushes, ensure your drill is off and the battery is removed.

Next, locate the brush caps on the sides of the motor. With a flathead screwdriver, gently twist the caps counterclockwise until they come loose. Remove the caps and use needle-nose pliers to remove the brushes.

Insert the new brushes in the same position as the old ones and re-attach the brush caps. Turn on your drill without a drill bit, allowing it to run for a brief period to ensure everything is functioning properly. By following these steps, you can easily replace the brushes on your Milwaukee cordless drill and restore its power and performance.

Remove the Battery

When preparing your drill for brush replacement, it’s important to start by removing the battery to avoid any unexpected surprises. First, locate the battery compartment and release the latch or button to open it. Once you’ve exposed the battery, gently remove it and set it aside.

Remember to handle the battery with care and keep it in a safe, dry place while you work on the drill. Removing the battery not only ensures your safety but also allows you easy access to the brush compartment without any obstructions. That way, you can change the brushes without worrying about accidentally damaging the battery or any other parts of the drill.

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By following this simple step, you’ll be well on your way to successfully replacing your drill’s brushes and getting back to your projects in no time!

Locate Brush Holders

When preparing your drill for brush replacement, it’s crucial to locate the brush holders first. These small components are responsible for holding the brushes in place and transferring power to the shaft. You can typically find the brush holders near the motor, and they should be visible once you remove the cover.

However, if you’re having trouble locating them, consult your drill’s manual or search online for a parts diagram. Once you’ve located the brush holders, you can proceed with replacing the brushes. Remember to be gentle and careful during this process to avoid damaging any other components.

By properly preparing your drill for brush replacement, you’ll be able to extend the life of your tool and keep it running smoothly for years to come.

Remove Old Brushes

When it comes time to replace the old brushes on your drill, it’s important to prepare properly to ensure a smooth transition. The first step is to remove the old brushes. This is relatively simple, but it’s important to be careful not to damage the brush holders or the armature.

First, unplug the drill and remove any batteries. Then, locate the brush holders and remove the screws that hold them in place. Gently pull the brush holder out and remove the old brush.

Check the brush for wear and damage, and if it’s worn down to half its original size or has any cracks or chips, it’s time to replace it. Repeat the process for the other brush holder. With the old brushes removed, you’re now ready to install the new ones and get your drill up and running again.

By taking your time and being careful during this process, you’ll ensure that your drill is working at its best and lasts for many jobs to come.

Install New Brushes

If you find that your Milwaukee cordless drill isn’t working quite as well as it used to, it may be time to replace the brushes. Fortunately, this is a fairly simple process that most people can do at home. The first step is to remove the old brushes from the drill.

This can usually be done by simply sliding them out of their slots. Next, you’ll need to insert the new brushes, making sure they fit securely in place. Be sure to consult your drill’s owner’s manual for specific instructions on how to replace the brushes.

You may also want to consider purchasing replacement brushes from Milwaukee or a trusted third-party supplier to ensure that they are compatible with your drill. With a little bit of effort, you can have your Milwaukee cordless drill running like new again in no time.

Fit New Brushes into Holders

Installing new brushes into holders is a crucial step in ensuring the optimal functioning of any electrical appliance that employs a motor. To carry out this task, first, you need to remove the worn-out brushes from the holders. Find the location of the brushes, and carefully pull the old brushes out using appropriate tools.

It is necessary to clean the area inside the holder and make sure there is no debris left behind. Once you are done, you can fit the new brushes into the holders. Put each brush in its original place and press it firmly so that it can latch correctly.

Once you have fitted all the new brushes, test the appliance and check if it runs as expected. These simple steps will ensure the longevity of your appliance. So, if you’re looking to boost your machine’s performance, installing new brushes can be an excellent place to start.

Replace Brush Caps and Screw Tight

Installing new brushes in your power tools can significantly improve their performance and extend their lifespan. To begin, you’ll first need to replace the brush caps and screw them tightly in place. Then, remove the old brushes by gently pulling them out of their housing.

Take note of which way they were facing so that you can install the new ones correctly. Insert the new brushes by gently pressing them into place, making sure they are aligned with the housing. Once the brushes have been installed, make sure to test the tool to ensure that it is functioning properly.

By replacing your brushes and maintaining your power tools, you can save money in the long run by avoiding costly repairs or replacements. So, what are you waiting for? Get started on installing those new brushes and you’ll notice the difference in your power tools’ performance right away!

Reattach the Battery and Test

Once you’ve successfully replaced the brushes on your Milwaukee cordless drill, it’s time to reattach the battery and give it a test run. Make sure the battery is fully charged before reattaching it to the drill. Align the battery with the base of the drill and slide it into place.

Once the battery is securely attached, turn on the drill to test it. Check for smooth operation and ensure that the motor is spinning as it should. If everything looks good, you can start using your freshly repaired drill again.

Don’t forget to keep checking on the condition of your brushes periodically to ensure your drill is always performing at its best. By following these simple steps, you can save yourself the cost and hassle of buying a new drill, and keep your trusty Milwaukee cordless drill working like a charm for years to come.

Reattach Battery

Now that you’ve successfully replaced the battery in your device, it’s time to reattach it and test everything out. Begin by carefully lining up the connectors on the battery with the ones on the device. Once the connectors are in place, gently press down on the battery until it clicks into position.

You should feel it secure itself in place. Double-check that the battery is properly aligned and that nothing is in the way before moving on to the testing phase. Turn your device back on and run a few tests to make sure everything is in good working order.

Test the battery life, screen brightness, and any other features that may have been impacted by the new battery. If everything checks out, congratulations! You have successfully replaced your device’s battery and can continue using it for all of your daily needs.

Test Drill Functionality

Now that you have taken the necessary precautions and opened up your power drill, it is time to reattach the battery and test the drill’s functionality. Always make sure that the battery is charged fully before reattaching it. Once you have reconnected the battery, give it a test run by drilling into a scrap piece of wood or metal.

If the drill is working correctly, then you are good to go. If it’s not drilling smoothly, then check to see if any parts were reassembled correctly or if any damage has occurred during the reassembly process. Remember to take your time and be patient when testing the drill’s functionality.

Rushing through the process may result in an incomplete or faulty repair. By following these steps, you can successfully repair your power drill and get back to your DIY projects in no time.

Ensure Safety Precautions Are Followed

When it comes to reattaching the battery on your device, safety precautions should never be ignored. Before handling the battery, make sure to put on protective gear such as gloves and goggles. Additionally, ensure that the battery is turned off and disconnected from any power source.

Once you have reattached the battery, it’s time to test it out. But before doing so, double-check that all screws and connections are secure. Turn on the device and observe if it’s functioning properly.

If there are any issues, it’s better to address them right away rather than risk further damage. Remember, the safety of yourself and your device should always be the top priority. By taking the necessary precautions, you can avoid any potential accidents or mishaps.

So, put on those gloves, reconnect your battery, and start testing!


Congratulations! You’ve successfully replaced the brushes on your Milwaukee cordless drill. You may have experienced some sparks and resistance during the process, but now your drill is ready to power through any DIY project with ease. Just remember, like replacing brushes, tackling home improvement projects may seem daunting, but with the right tools and a bit of know-how, you can accomplish anything.

Now go forth and drill with confidence!”


What tools do I need to replace the brushes on my Milwaukee cordless drill?
You will need a screwdriver, a pair of pliers, and replacement brushes specifically designed for your Milwaukee cordless drill.

How often do I need to replace the brushes on my Milwaukee cordless drill?
The frequency of brush replacement depends on the usage of your tool. However, on average, you should replace the brushes every 50 to 60 hours of use.

Can I replace the brushes on my Milwaukee cordless drill on my own?
Yes, you can replace the brushes on your Milwaukee cordless drill on your own, as long as you have the necessary tools and instructions.

How do I know if the brushes on my Milwaukee cordless drill need replacement?
Signs that your brushes need replacement include reduced power output, excessive sparking or arcing, and a burning smell while using the tool.

Are there any safety precautions I should take while replacing the brushes on my Milwaukee cordless drill?
Yes, before replacing the brushes, make sure you unplug the tool and remove the battery. Wear safety glasses and gloves, and work in a well-ventilated area.

Can I use any type of replacement brushes for my Milwaukee cordless drill?
No, it is important to use replacement brushes that are specifically designed for your Milwaukee cordless drill to ensure proper function and safety.

What is the expected lifespan of the brushes on a Milwaukee cordless drill?
The lifespan of the brushes depends on usage, but on average, they can last anywhere from 50 to 500 hours of use.

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