How to Replace a Dishwasher Drain Pump - A Detailed DIY Guide

Dishwasher Drain Pump Replacement: A Step-by-Step Guide for DIY Enthusiasts

Anthony Arphan
January 1, 1
23 min read

If your dishwasher is not draining properly, it may be time to replace the drain pump. The drain pump is responsible for expelling water from your dishwasher, and when it malfunctions, it can lead to water pooling in the bottom of your appliance. Luckily, replacing the dishwasher drain pump is a relatively simple task that you can do yourself with just a few tools and a bit of patience.

Step 1: Before starting any repair work, always ensure that the power to your dishwasher is turned off. This will prevent any accidental electric shocks. You can do this by either unplugging the dishwasher or turning off the circuit breaker that supplies power to the appliance.

Step 2: Once you’ve confirmed that the power is off, locate the dishwasher’s drain pump. It is usually located in the bottom of the appliance, near the back. You may need to remove the bottom panel of the dishwasher to access the pump. Refer to your dishwasher’s manual for specific instructions on how to remove the panel.

Step 3: With the pump exposed, use a wrench or pliers to disconnect the drain pump from the dishwasher’s plumbing. You may need to use a towel or bucket to catch any excess water that may drain out during this step. Once the drain pump is disconnected, carefully remove it from the dishwasher.

Step 4: Take your new drain pump and carefully attach it to the dishwasher’s plumbing. Make sure that all connections are secure and tight. Refer to the manufacturer’s instructions for proper installation of the new drain pump.

Step 5: Once the new drain pump is installed, reattach the bottom panel of the dishwasher and make sure it is securely fastened. Then, turn the power back on to your dishwasher and test it by running a short cycle. Check for any leaks or issues with draining.

Step 6: Congratulations! You have successfully replaced the drain pump in your dishwasher. Enjoy your clean and properly draining appliance!

It’s important to note that if you are not comfortable performing this repair yourself, it is always best to contact a professional technician. They will have the necessary expertise and tools to ensure the repair is done correctly and safely.

About Dishwasher Drain Pump

The dishwasher drain pump is a crucial component of your dishwasher. As the name suggests, its main function is to pump out the dirty water from the dishwasher. It plays a vital role in maintaining the cleanliness and efficiency of your dishwasher.

When you start a dishwasher cycle, the drain pump activates and pumps out the water from the dishwasher basin. It is responsible for ensuring that the dirty water is completely removed from the dishwasher and drained away properly.

The drain pump is typically located at the bottom of the dishwasher, near the back. It is connected to the drain hose, which carries the water out of the dishwasher and into the household plumbing system. The drain pump is typically powered by an electric motor that provides the necessary force to pump out the water.

If the dishwasher drain pump is not functioning properly, you may notice issues such as standing water in the dishwasher, a foul smell coming from the dishwasher, or poor cleaning performance. In some cases, the dishwasher may not even start a cycle if the drain pump is faulty.

Replacing a dishwasher drain pump can be a relatively simple DIY task, but it is important to follow the manufacturer’s instructions and take appropriate safety precautions. In the following guide, we will walk you through the step-by-step process of replacing a dishwasher drain pump to help you get your dishwasher up and running again.

Note: Before attempting to replace the dishwasher drain pump, it is important to troubleshoot the issue and ensure that the drain pump is the cause of the problem. Sometimes, the issue may be related to a clogged drain hose or a malfunctioning control board. If you are not confident in your troubleshooting skills, it is best to seek professional help.

Disclaimer: The information provided in this guide is for informational purposes only. It is not intended to be a substitute for professional advice or assistance. Always consult the manufacturer’s instructions and guidelines, and use proper safety precautions when working with appliances.

Common Problems with Dishwasher Drain Pump

Having a functioning dishwasher drain pump is vital for the proper functioning of your dishwasher. However, there are a few common problems that can occur with the drain pump, causing issues with draining and potentially leading to leaks or blockages. It’s important to be aware of these problems and know how to troubleshoot them.

1. Clogging: One of the most common problems with the dishwasher drain pump is clogging. Over time, debris and food particles can accumulate in the pump and cause it to become blocked. This can lead to poor drainage or a complete failure to drain. It’s essential to regularly clean the drain pump and remove any blockages to ensure proper functioning.

2. Motor failure: Another common problem is motor failure. If the motor of the drain pump becomes faulty or burns out, it will no longer be able to pump water effectively. This can result in a dishwasher that doesn’t drain or drains very slowly. In this case, the motor may need to be replaced.

3. Impeller damage: The impeller is a key component of the drain pump that helps to move water through the system. If the impeller becomes damaged or broken, it can impair the pump’s ability to drain water efficiently. Replacing the impeller may be necessary in this situation.

4. Leaks: Leaks can also occur with the dishwasher drain pump. If there are cracks or damaged seals, water may leak out during the draining process. This can lead to water damage and potentially cause the dishwasher to malfunction. Inspecting the drain pump for any signs of leaks and replacing any damaged parts is crucial.

5. Electrical issues: Lastly, electrical issues can affect the performance of the dishwasher drain pump. Loose wiring, blown fuses, or malfunctioning switches can all lead to problems with the drain pump. It’s important to check the electrical connections and ensure everything is working properly.

By being aware of these common problems with the dishwasher drain pump, you can effectively troubleshoot and address any issues that arise. Regular maintenance and cleaning can help prevent these problems from occurring and ensure that your dishwasher continues to function efficiently.

Tools and Materials Needed

Here are some tools and materials that you will need to replace a dishwasher drain pump:

Flathead screwdriver
Phillips screwdriver
Needle-nose pliers
Adjustable wrench
Bucket or towel
Dishwasher drain pump replacement
New hose clamps
Teflon tape

Make sure to gather all these tools and materials before starting the replacement process. Having everything prepared beforehand will make the process smoother and more efficient.

Necessary Tools for Replacing a Dishwasher Drain Pump

Before you begin the process of replacing your dishwasher drain pump, it’s important to gather all the necessary tools. Having the right tools on hand will make the job much easier and ensure that you can complete the project without any issues. Here are the essential tools you will need:

1. Screwdriver: A screwdriver will be necessary for removing screws that hold the dishwasher panels or brackets in place. Make sure to have both a flathead and a Phillips head screwdriver on hand to handle different types of screws.

2. Pliers: Pliers will come in handy for gripping and pulling hoses and clamps during the replacement process. They can also help with tightening or loosening fittings as needed.

3. Adjustable wrench: An adjustable wrench will be necessary for loosening and tightening nuts and bolts. Make sure to choose a wrench that is the right size and can easily grip the fittings you will be working with.

4. Bucket or towels: It’s important to have a bucket or towels nearby to catch any water that may come out during the replacement process. This will help prevent water damage and messes.

5. Safety goggles: Safety goggles are essential for protecting your eyes from any debris or splashes that may occur during the replacement process. Make sure to wear them throughout the entire project.

6. Gloves: Wearing gloves will help protect your hands from any sharp edges or hot surfaces that you may come into contact with during the replacement process.

7. Multimeter: A multimeter is a useful tool for testing electrical connections and ensuring that the power is disconnected before working on the dishwasher drain pump.

8. Replacement drain pump: Of course, you will also need a replacement drain pump specifically designed for your dishwasher model. Make sure to have the new pump on hand before you begin the project.

By having all of these necessary tools ready, you’ll be prepared to tackle the task of replacing your dishwasher drain pump with confidence and efficiency.

Materials Needed for Replacing a Dishwasher Drain Pump

Before you begin the process of replacing your dishwasher drain pump, it is important to gather all the necessary materials. This will ensure that you have everything you need to complete the task without any interruptions. Here are the materials you will need:

1. New dishwasher drain pump: Make sure you have a new dishwasher drain pump that is compatible with your specific dishwasher model. You can purchase one from a hardware store or order it online.

2. Screwdriver: You will need a screwdriver to loosen and remove the screws that secure the dishwasher drain pump in place. Make sure you have a screwdriver that fits the screws on your dishwasher.

3. Pliers: Pliers will be useful for removing any hose clamps or connectors that are attached to the drain pump. Make sure you have a pair of pliers that can handle the job.

4. Towel or sponge: You will need a towel or sponge to soak up any water that may spill out when you disconnect the hoses from the drain pump. This will help prevent any water damage to your kitchen floor.

5. Replacement hoses: In some cases, you may need to replace the hoses that connect to the dishwasher drain pump. Make sure you have replacement hoses on hand, just in case.

6. Safety gloves and goggles: It is always a good idea to wear safety gloves and goggles when working with any plumbing components. This will help protect your hands and eyes from any potential hazards.

By having all of these materials ready before you start, you can ensure a smooth and efficient process of replacing your dishwasher drain pump. Now that you have everything you need, you can proceed with the step-by-step guide to replace the drain pump and get your dishwasher working like new again!

Step 1: Preparation

Before beginning the process of replacing your dishwasher’s drain pump, it’s important to gather all the necessary tools and materials. This will help ensure a smooth and efficient installation.

Here’s a list of items you’ll need:

Make sure to gather all these tools and materials beforehand to avoid any unnecessary delays during the installation process.

Turn Off Power and Water Supply

Before you begin replacing the dishwasher drain pump, it is essential to turn off both the power and water supply to ensure your safety. Here is how you can do it:

Locate the circuit breaker for your dishwasher in the electrical panel.
Switch off the circuit breaker to cut off the power supply to the dishwasher.
Next, find the shut-off valve for the water supply connected to the dishwasher.
Turn the shut-off valve clockwise to close it and stop the water flow.

By turning off the power and water supply, you eliminate the risk of electrical shock and water damage during the replacement process.

Remove Dishwasher Access Panel

Before proceeding with any repairs on your dishwasher, it is important to first remove the dishwasher access panel. The access panel is typically located at the bottom front of the dishwasher and allows you to reach the internal components of the appliance.

To remove the dishwasher access panel, follow these steps:

Locate the access panel and remove any screws or fasteners securing it in place. The number and location of screws may vary depending on the make and model of your dishwasher.
Once the screws are removed, gently pull the access panel away from the dishwasher. Be careful not to force it as there may be wiring or hoses attached to the panel.
If there are any electrical connections or hoses connected to the access panel, carefully disconnect them. Take note of their placement or take pictures to ensure easy reassembly later.
Set the access panel aside in a safe place.

With the access panel removed, you now have easy access to the internal components of your dishwasher. Remember to exercise caution and disconnect the power supply before attempting any repairs.

Disconnect the Drain Hose

Before disconnecting the drain hose, turn off the power to the dishwasher by unplugging it from the electrical outlet or turning off the circuit breaker. This will help prevent any accidents or electric shocks while working on the appliance.

Locate the drain hose, which is typically connected to the sink drain or garbage disposal unit. It may be held in place by a clamp or a screw. Use a screwdriver or a pair of pliers to loosen the clamp or remove the screw.

Once the clamp or screw is removed, gently pull the drain hose away from the connection point. Be careful not to twist or bend the hose too much, as this may cause damage or leaks.

Place a bucket or a towel underneath the drain hose to catch any water that may spill out. Slowly pull the hose out of the drain, allowing any remaining water to drain into the bucket or towel.

Inspect the drain hose for any signs of damage or clogs. If the hose is damaged, it will need to be replaced. If there are any clogs, use a straightened wire hanger or a drain snake to remove the obstruction.

With the drain hose disconnected, you can now proceed with replacing the dishwasher drain pump. Follow the next steps in the DIY guide to complete the installation process.

Step 2: Remove the Old Drain Pump

Before you begin this step, make sure that the electricity to the dishwasher is turned off. This will help prevent any accidental shocks or injuries while you are working on the dishwasher.

To remove the old drain pump, follow these steps:

Locate the drain pump, which is typically located at the bottom of the dishwasher. It may be hidden behind a cover or panel, so you may need to refer to the dishwasher’s manual for specific instructions on how to access the drain pump.
Using a screwdriver or a socket wrench, remove any screws or bolts that are securing the drain pump in place. Keep these screws or bolts in a safe place, as you will need them later when installing the new drain pump.
Carefully disconnect the electrical wires and the hose that are connected to the old drain pump. Take note of how these wires and hoses are connected, as you will need to reconnect them to the new drain pump later.
Once the electrical wires and hose are disconnected, you can now remove the old drain pump. Gently pull it out from its position, being careful not to damage any of the surrounding components.
Inspect the old drain pump for any signs of damage or wear. If it is damaged or worn out, it is recommended to replace the entire pump rather than trying to repair it.

By following these steps, you have successfully removed the old drain pump from your dishwasher. You can now proceed to the next step, which is installing the new drain pump.

Locate the Drain Pump

Before starting the process of replacing your dishwasher’s drain pump, you need to locate it. The drain pump is usually located at the bottom of the dishwasher, near the back or side. It is a small, cylindrical-shaped device that is responsible for draining the water out of the dishwasher.

To locate the drain pump, you may need to remove the bottom access panel of the dishwasher. This panel can typically be removed by unscrewing a few screws or using a screwdriver. Once the panel is removed, you should be able to see the drain pump.

Alternatively, you can refer to the dishwasher’s user manual to find the exact location of the drain pump. The manual will provide detailed instructions on how to access and replace the drain pump.

Once you have located the drain pump, take a moment to inspect it. Look for any obvious signs of damage, such as cracks, leaks, or broken parts. If the drain pump appears to be damaged, it is a good idea to replace it.

Disconnect the Electrical Connections

Before you begin working on your dishwasher, it’s important to disconnect it from the power source to ensure your safety. Start by turning off the dishwasher at the circuit breaker panel.

Once the power is off, open the dishwasher door and locate the electrical connections. They are usually found at the bottom of the dishwasher near the front. You may need to remove the kick plate to access them.

Use a pair of pliers to gently disconnect the wire nuts that are securing the electrical wires. Twist the wire nuts counterclockwise until they come loose. It’s important to be gentle and careful not to damage the wires.

After the wire nuts are removed, gently pull apart the electrical connections. Take note of how the wires are connected before disconnecting them, so you can easily reconnect them later.

Once all the electrical connections are disconnected, use electrical tape to cover the exposed ends of the wires. This will help prevent any accidental contact and ensure your safety.

Now that the electrical connections are disconnected and the wires are safely covered, you can proceed with replacing the dishwasher drain pump.

Remove the Mounting Screws

Before removing the mounting screws, make sure to turn off the power to the dishwasher at the circuit breaker. This will help prevent any electrical accidents while working on the dishwasher.

Locate the mounting screws that secure the dishwasher to the underside of the countertop. These screws are typically located near the front and back corners of the dishwasher.

Use a screwdriver or a wrench to carefully loosen and remove the mounting screws. Take your time to avoid stripping the screws or damaging the surrounding area.

Tip: If the mounting screws are difficult to remove, you can try using a penetrating oil to loosen them up. Apply the oil to the screws and let it sit for a few minutes before attempting to remove them again.

Once the mounting screws have been removed, gently pull the dishwasher out from underneath the countertop. Be careful not to damage any of the surrounding cabinets or plumbing connections.

Note: If the dishwasher does not easily slide out, double-check that all the mounting screws have been removed. There may also be additional clips or brackets holding the dishwasher in place, which will need to be released before the dishwasher can be fully removed.

With the mounting screws removed, you can now proceed to the next step of the dishwasher drain pump replacement process.

Step 3: Install the New Drain Pump

Once you have removed the old drain pump, it’s time to install the new one. Follow these steps to ensure proper installation:

1. Position the new drain pump: Carefully position the new drain pump in the same location where the old one was located. Make sure it is aligned properly and fits securely.

2. Secure the pump: Use the mounting brackets or screws provided with the new drain pump to securely fasten it in place. Tighten the screws until the pump is firmly attached.

3. Connect the electrical wires: Use the wires that were disconnected from the old drain pump to connect the new one. Match the color-coded wires or follow the manufacturer’s instructions for proper wiring.

4. Reattach the drain hose: Slide the drain hose onto the connection on the new drain pump. Ensure it is tightly secured and properly positioned to prevent any leaks.

5. Test the installation: Before fully closing up the dishwasher, it’s important to test the new drain pump installation. Run a quick cycle and check for any leaks or abnormal noises, which may indicate an improper installation.

Note: If you encounter any issues during the installation process, consult the manufacturer’s instructions or consider seeking professional assistance.

Once you have successfully installed the new drain pump, you can reassemble and test your dishwasher to ensure everything is functioning properly.

Attach the Mounting Screws

Once you have positioned the new drain pump in the correct location, use the screws provided to attach it securely to the dishwasher. Make sure the pump is aligned properly with the mounting brackets and holes in the dishwasher. Using a screwdriver, tighten the screws until they are snug, but be careful not to overtighten as this could damage the pump or dishwasher.

Check that the pump is firmly attached and does not wobble or move when gently tugged. This will ensure proper functioning of the dishwasher and prevent leaks or drainage issues.

If you encounter any difficulties or the pump does not align properly, double-check the positioning and consult the dishwasher’s manual or manufacturer’s instructions for further guidance.

Once the mounting screws are securely fastened, you can proceed to the next step in the installation process.

Connect the Electrical Connections

Before connecting the electrical connections, ensure that the dishwasher’s power is turned off. This is crucial for your safety.

1. Locate the electrical box at the back of the dishwasher. It is usually at the bottom near the floor. Open the electrical box to access the wiring connections.

2. With the wiring diagram provided in the dishwasher’s manual, identify the electrical connections. There should be three wires - one black (hot wire), one white (neutral wire), and one green or copper (ground wire).

3. Begin by connecting the black wire from the dishwasher to the black wire from the power supply. Use wire connectors to securely fasten the two wires together.

4. Connect the white wire from the dishwasher to the white wire from the power supply. Again, use wire connectors to ensure a reliable connection.

5. Finally, connect the green or copper wire from the dishwasher to the grounding wire in the power supply. This wire is essential for safety reasons and should never be skipped.

6. Once all the wires are securely connected, carefully tuck them back into the electrical box and close it.

7. Double-check all the connections to ensure they are tight and properly fastened.

8. Turn on the dishwasher’s power and run a test cycle to confirm that the electrical connections are functioning correctly.

By following these steps, you have successfully connected the electrical connections for your new dishwasher drain pump. Remember to always prioritize safety and consult the dishwasher’s manual if you have any doubts or concerns.

Reconnect the Drain Hose

Now that you’ve installed the new drain pump, it’s time to reconnect the drain hose to complete the process. Begin by locating the end of the drain hose that was previously connected to the old pump.

Step 1: Inspect both ends of the drain hose for any damage or debris. If you notice any cracks or clogs, it’s important to replace the hose before proceeding.

Step 2: Slide the clamp back onto the end of the drain hose that connects to the dishwasher. Make sure it is positioned close to the end of the hose but not yet tightened.

Step 3: Insert the end of the drain hose onto the outlet of the new drain pump. It should fit snugly and create a secure connection.

Step 4: Once the hose is securely attached to the pump, slide the clamp over the connection and tighten it using a screwdriver or pliers. Make sure the clamp is tight enough to prevent any leaks, but be careful not to overtighten and damage the hose.

Note: Some drain hoses may require the use of a hose clamp instead of the built-in clamp. If your hose has a separate clamp, follow the manufacturer’s instructions for tightening.

Step 5: Finally, double-check all connections to ensure everything is properly attached. Give the drain hose a gentle tug to make sure it is firmly in place and won’t come loose during operation.

By following these steps, you have successfully reconnected the drain hose to the new drain pump. Your dishwasher is now ready to be tested and used again.

Step 4: Test the New Drain Pump

Once you have installed the new drain pump, it is important to test it before reconnecting all the hoses and placing the dishwasher back in its position. Testing the drain pump will ensure that it is functioning properly and will prevent any leaks or drainage issues in the future.

To test the new drain pump, follow these steps:

Turn on the water supply and check for any leaks around the connections.
Start a new dishwasher cycle and let it run for a few minutes.
Listen for any unusual noises coming from the drain pump. If you hear any strange sounds, it may indicate a problem with the installation or the pump itself.
Check if the water is draining properly from the dishwasher. Look for any obstructions or blockages in the drain hose.
If everything is working correctly and there are no leaks or drainage issues, you can proceed with reconnecting the hoses and placing the dishwasher back in its position.

Testing the new drain pump will give you peace of mind knowing that the replacement was successful and that your dishwasher will continue to work efficiently. If you encounter any problems during the testing process, consult the manufacturer’s instructions or consider seeking professional help.

Turn On Power and Water Supply

Before testing your new dishwasher drain pump, make sure to turn on both the power and water supply. Here are the steps to follow:

By following these steps, you will ensure that your dishwasher has the necessary power and water supply to function properly. Once the power and water are turned on, you can proceed with testing your dishwasher drain pump.

Check for Leaks

After you have successfully installed the new dishwasher drain pump, it’s important to check for any leaks before using the dishwasher. Follow these steps to ensure there are no leaks:

Inspect all the connections and make sure they are tight. If you notice any loose connections, tighten them using a wrench or pliers.
Run a test cycle on your dishwasher and pay close attention to the area around the drain pump.
While the dishwasher is running, check for any signs of water leakage. Look for drips, puddles, or wet spots near the drain pump.
If you notice any leaks, turn off the dishwasher and tighten the connections that are causing the leakage. You may need to replace any faulty or damaged parts.
After making the necessary adjustments or replacements, run another test cycle to ensure that the leaks have been resolved.

It’s important to address any leaks as soon as possible to prevent water damage to your kitchen cabinets or floors. Regularly checking for leaks can help you catch any potential problems early on and prevent costly repairs in the future.

Run a Test Cycle

Once you have successfully installed the new drain pump, it is important to run a test cycle to ensure that everything is functioning properly. Follow these steps to run a test cycle:

Close the dishwasher door and make sure it is securely latched.
Turn on the power to the dishwasher by using the control panel or by plugging it back in.
Select a short cycle or a test cycle option on the dishwasher’s control panel.
Start the cycle and allow the dishwasher to run for a few minutes.
Listen for any unusual noises coming from the dishwasher, such as grinding or whirring sounds.
Observe the water drain from the dishwasher. It should flow freely without any backups or blockages.
Check for any leaks around the drain pump or any other areas of the dishwasher.
Monitor the dishwasher throughout the entire test cycle to ensure that it completes without any errors or interruptions.
If you notice any issues during the test cycle, such as leaks or unusual noises, it may be necessary to troubleshoot or make further adjustments to the drain pump installation.
If the test cycle completes successfully with no issues, congratulations! You have successfully replaced the dishwasher drain pump.

Running a test cycle is an important step to ensure that the new drain pump is functioning properly. It helps identify any potential problems early on and allows for prompt troubleshooting and repair if necessary. By following these steps, you can be confident that your dishwasher drain pump replacement was successful.