How to replace diverter valve 00751950 on a Bosch, Thermador or Gaggenau dishwasher

Is your dishwasher leaking water onto the floor? It might be time to replace the diverter valve that’s responsible for directing water to the spray arms. Don’t worry, we’ll guide you through a step-by-step process to replace the diverter valve 00751950 and have your Bosch, Thermador, or Gaggenau dishwasher running smoothly again—with a handy how-to video just below to make the task a breeze.

The diverter valve in your dishwasher is responsible for directing water to the spray arms during a wash cycle. When it becomes damaged, you may notice water leaking onto your floor, which means it’s probably time to replace it. 

Let’s walk through the process of replacing diverter valve 00751950 so you can get your Bosch, Thermador or Gaggenau dishwasher running smoothly again.

If you need to order the valve, you can find it here. If you need any more parts for your dishwasher, you can enter your model number at AppliancePartsPros.com or visit this page.

WATCH: How to replace Bosch/Thermador/Gaggenau Dishwasher Diverter Valve 00751950

The information in this article may not apply to your specific appliance model. We recommend consulting your manufacturer’s documentation or contact us with any questions.

What you need

• Phillips screwdriver
• Flathead screwdriver 
• 5/8 inch wrench 
• 5/16 nut driver 
• Quarter-inch nut driver 
• Towels
• Work gloves
• Replacement diverter valve 00751950 (check compatibility with your model)

The specific tools required may vary depending on the model of your appliance and the type of fasteners used on it. Always consult the user manual or refer to any specific instructions provided by the manufacturer for the recommended tools for your appliance model.

Read more: How Does a Dishwasher Work?

Safety precautions

When working on any appliance repair, it’s essential to prioritize safety. Here are some safety precautions to keep in mind:

• Always power off and unplug your dishwasher or switch off the circuit breaker before attempting any maintenance or replacement work. This keeps you safe by preventing any risk of electric shock. 
• Before disconnecting any water lines, turn off the water supply to the dishwasher to prevent any potential leaks or water damage during the repair process. This can typically be done at the shut-off valve located underneath the sink.
• If the dishwasher has recently been used, give it plenty of time to cool down before working on it. 
• Take your time and don’t rush while working to prevent accidents and personal injuries.
• Work in a well-lit area so you can clearly see and access appliance parts.
• Keep your workspace free of clutter and other obstacles. Keep children and pets away from the work area.
• Never work on internal parts with wet hands. Make sure the work area is completely dry.
• Check the user manual to see if there are specific installation or safety instructions related to your dishwasher or replacement part. 
• Be gentle when handling or removing parts. Excessive force might damage the dishwasher or cause personal injury.
• Wear insulated work gloves to protect your hands from sharp metal parts and debris.
• When working with wires, avoid touching any exposed wires or terminals. If you need to touch a wire, use a non-conductive tool or wear insulating gloves to prevent electrical shock.
• Consider wearing safety glasses and/or a dust mask when working with chemicals, dust or a large amount of debris to prevent irritation or injury.

Read more: How to Clean a Dishwasher

Replacement steps

Step 1 – Disconnect the lines under the sink

1. Place a towel under the sink to catch any water that comes out when removing the fill line and drain hose. 
2. Use a 5/8-inch wrench to loosen the fill hose, which is connected to the hot water valve. 
3. Once the fill hose is free, unscrew it by hand and set it aside.
4. Follow the drain hose and find its end. It may go to the garbage disposal or the air gap.
5. Once you find the end of the drain hose, use a 5/16 nut driver to loosen the clamp. 
6. Pull the clamp free and set it aside.

Step 2 –  Detach the dishwasher from the countertop

1. Open the dishwasher door.
2. Use a Phillips screwdriver to remove the screws that hold the dishwasher mounting brackets to the countertop.
3. Lift up the door and carefully use it to partially pull the dishwasher out. Then grab the frame and pull it out the rest of the way.

Step 3 – Remove the insulation

Remove the insulation. Carefully fold it and set it aside.  

Now you have access to the diverter valve, which is located at the bottom of the dishwasher on the left-hand side. 

Step 4 – Remove the diverter valve

1. Use a flathead screwdriver to lift up the locking tab and pull the wiring harness out.
2. Use a flathead screwdriver to get behind the crimped-on clamp that holds the diverter valve in place. Pry it open to loosen it. 
3. Release the locking tab and pull the clamp out.
4. Turn the diverter valve clockwise to unlock it from the tabs. You don’t have to turn it too far –  just enough to release it. 
5. Once the valve is released, pull down on it to remove it from the sump.

Step 5 – Install the new diverter valve

Since the original clamp can’t be reused, you’ll need to put a new clamp on. 

1. Slide the new clamp onto the rubber fitting, positioning it a little higher than needed. 
2. Tighten the clamp down with a quarter-inch nut driver. Place it at an angle to tighten it easier. Make sure it’s snug but not overly tight. 
3. Spray the inside of the diverter valve with water to help slide it onto the seal. 
4. Push the new seal onto the sump. Make sure the seal fits into the groove on the sump to hold it in place.
5. Lift the diverter valve and lock it back into place. Don’t worry about putting the circulation pump into the diverter valve – that will be done from the other side.
6. Lock the diverter valve in place and plug in the wiring harness. 

Step 6 – Reconnect the circulation pump motor

1. Go to the other side of the dishwasher and reconnect the circulation pump motor to the sump. 
2. Fit the pump onto the sump body fitting and twist it so the diverter valve assembly fitting goes up into it.
3. Return to the other side of the dishwasher. Loosen the clamp, let it drop down, and tighten it back up at the base of the fitting for a good seal.

Step 7 – Reinstall the insulation

Set the insulation back in place and unfold it so it lines up with the dishwasher and fits into the clips on the left-hand side that hold it onto the water-fill assembly.

Step 8 – Reposition the dishwasher

1. Reach underneath and thread the lines through the cabinets. 
2. Push the dishwasher in about halfway, then go under the sink to check that the lines are not caught on anything. 
3. Once everything is clear, push the dishwasher in the rest of the way.

Step 9 – Reconnect the lines under the sink

1. Reconnect the drain hose to the air gap. Push it up into place and use a 5/16-inch nut driver to tighten the clamp.
2. Hook up the water line by starting it by hand, then use a 5/8-inch wrench to tighten it down.

Step 10 – Attach the dishwasher to the countertop

1. Once the lines are reconnected, close the cabinet doors and open the dishwasher door. 
2. Use a Phillips screwdriver to insert the screws that hold the dishwasher to the countertop.

Step 11 – Test the dishwasher

1. Close the dishwasher door
2. Plug the dishwasher back in and turn the water back on.
3. Run a test cycle to make sure everything is working correctly.

Read more: Dishwasher is Noisy: Top 6 Reasons and Fixes

More information

Thanks for reading! We hope this article helped you replace the diverter valve on your Bosch, Thermador or Gaggenau dishwasher. 

If you still need some replacement parts, grab your model number and head over to AppliancePartsPros.com. We offer over two million parts and most orders arrive in two business days. If you need some help with finding the right part or placing an order, you can contact our team at 1 (877) 477-7278.

While you’re waiting for your new part to arrive, you can explore our DIY blog and watch thousands of video tutorials on our YouTube channel.

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