How to Repair Impact Wrench – Complete Guide?

If you’re a handyman, then you know the importance of having an impact wrench. It’s a powerful tool that can help you complete projects quickly and easily. But what do you do if your impact wrench breaks? Fortunately, there are several ways to repair an impact wrench. In this blog post, we’ll discuss some of those methods. Stay tuned!

how to repair impact wrench

When to repair the impact wrench?

Impact wrenches are powerful tools that can make quick work of more challenging projects. However, they can also be expensive, and like any tool, they will eventually need to be repaired or replaced. So when is the best time to repair or fix an impact wrench?

Generally speaking, it is best to repair an impact wrench sooner rather than later. Impact wrenches can withstand a lot of wear and tear, and even minor problems can quickly escalate into larger ones.

As a result, it is essential to keep an eye on the condition of your impact wrench and to take it to a professional at the first sign of trouble. Getting repairs done early can help prolong the life of your impact wrench and avoid costly future problems.

How to repair impact wrench?

Here we described the methods of repairing four essential parts of an impact wrench-

Repair anvil

If you’re using an impact wrench to work on your car, and the anvil becomes damaged, you’ll need to know how to fix it. The first thing you’ll need to do is remove the damaged anvil from the wrench.

Once it’s been removed, you’ll need to inspect it for any cracks or other damage. If there is damage, you’ll need to use another tool to smooth it out so that the anvil can be reattached properly.

Once the surface is smooth, you can reattach the anvil to the wrench using bolts and washers.

Make sure that the anvil is firmly attached before using the wrench again. With these steps, you’ll be able to repair a damaged anvil on your impact wrench easily.

Repair broken motor

An impact wrench uses compressed air or electricity to generate high torque, making it suitable for automotive and industrial applications. However, because of its high amount of force, an impact wrench can easily break down.

If your impact wrench has stopped working, the first thing you should check is the motor. In most cases, a broken motor can be repaired by replacing the brushes.

First, remove the back cover of the impact wrench to access the motor. Then, remove the brushes and replace them with new ones.

Once the brushes have been replaced, reassemble the impact wrench and test it to see if it works properly.

If the issue still prevails, you may need to replace the whole motor.

Repair trigger

Impact wrenches are a powerful and popular tool for many projects, from simple home repairs to automotive work. However, this power comes at a price, and impact wrenches can be tough on their triggers.

Over time, the trigger may become worn or damaged, making it difficult to control the tool. Fortunately, repairing an impact wrench trigger is a relatively simple process.

  1. First, remove the battery from the tool.
  2. Next, locate the trigger assembly and remove the two screws that hold it in place.
  3. With the assembly removed, inspect the trigger mechanism for any damage or wear.
  4. If necessary, clean or replace the parts as needed. Once the trigger is in good working condition, reassemble the assembly and reattach it to the tool.
  5. Finally, replace the battery and test the trigger to ensure it is working correctly.

With a little care and maintenance, an impact wrench can provide years of trouble-free service.

Repair battery

An impact wrench uses a hammering action to produce torque, making it ideal for situations where a lot of force is required. Impact wrenches are available in corded and cordless versions, with the latter being more convenient as it offers excellent maneuverability. When the battery on a cordless impact wrench starts to fail, it will need to be replaced. This is a relatively simple process that can be carried out with just a few tools.

  • First, remove the battery from the impact wrench.
  • Use a hammer drill to make two holes in the side of the battery case.
  • Then, remove the screws by using a screwdriver that holds the case together.
  • Once the case is open, remove the old battery and insert the new one.
  • Finally, replace the screws and snap the case closed.

With the new battery, your impact wrench should be as good as the new one.


Can I repair an air impact wrench?

If the air impact wrench is not properly maintained, it can quickly become damaged. Fortunately, many common issues can be easily fixed with a few simple tools.

For example, if the air supply is not working properly, check the air compressor to ensure it is turned on and operating correctly.

If the air compressor is working, but the air impact wrench is still not functioning properly, check the hoses for leaks or blockages.

Finally, if the air impact wrench is still not working after these basic troubleshooting steps, it may need to be serviced by a qualified repair person.

By taking these simple steps, you can keep your air impact wrench in good working condition for many years to come.

Can I fix an electric impact wrench?

Electric impact wrenches are powerful tools that can quickly work lug nuts, screws, and other fasteners. However, they can also be delicate instruments, and it is essential to know how to maintain and repair them properly. With proper care, an electric impact wrench will last for many years.

There are a few factors that you can do to keep your impact wrench in good condition.

  • Always read the manufacturer’s instructions carefully before using the tool. This will help you understand how to operate the device and avoid damaging it properly.
  • Be sure to clean the tool after each use. This will remove any debris that could potentially damage the internal components.
  • Regularly oil the moving parts of the impact wrench to keep them functioning smoothly.

If your electric impact wrench stops working correctly, you can try to fix it by following these things.

  • Check the power source to ensure it is working properly.
  • Check all the connections to ensure they are tight and corrosion-free.
  • If the problem still appears, you may need to replace some internal components.

However, if you are not comfortable performing these repairs, you should take the tool to a qualified technician for service.

Do you need an impact wrench for car repair?

Yes, An impact wrench is a powerful and handy tool that is ideal for repairing a car. When shopping for an impact wrench, it is essential to consider the project’s specific needs. For example, a lower-powered model may suffice if the goal is to loosen a lug nut.

However, a more powerful model may be necessary if the goal is to remove a stubborn bolt. Additionally, it is crucial to consider the size and weight of the impact wrench, as this will determine how easy it is to use. Ultimately, whether or not an impact wrench is needed for car repair depends on the specific circumstances.


Whether you’re new to repairing your tools or a seasoned professional, following these steps will help you fix an impact wrench quickly and easily. With a little practice and patience, your impact wrench can work like new again. Do you have any tips for repairing other tools? Please share your information with us in the comments below!

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