Replace GE Dishwasher Spray Arm Tube WD21X20309 Easily

Is your GE dishwasher failing to deliver that perfect clean, especially to the dishes on your upper rack? If so, the culprit might just be a worn-out or clogged middle spray arm water tube. Don’t worry—fixing it is simpler than you think, and we’ve got a step-by-step video guide ready to help you every step of the way!

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If your GE dishwasher isn’t cleaning like it used to, especially the dishes on the upper rack, the middle spray arm water tube (part WD21X20309) could be the issue. This part channels water from the pump to the upper spray arms, so if it’s cracked, clogged, or loose, your dishes might not be getting the rinse they need. The good news? Replacing it is a pretty quick fix you can totally handle yourself. In this guide, we’ll walk you through the steps to swap out the water tube and get your dishwasher back to work. Let’s get to it!

Watch here: How to install the middle spray arm tube

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.

Why would it need to be replaced?

There are a few clear signs that your middle spray arm supply tube needs replacing:

• Dishes on the middle rack consistently come out dirty
• Water pressure from the middle spray arm seems weak
• The middle spray arm doesn’t spin smoothly

If you notice any of these issues and some elbow grease doesn’t seem to help, then replacing the supply tube is likely the solution.

Tools and materials needed

Replacing a dishwasher supply tube is a straightforward repair that anyone can tackle in no time with just a few tools:

• GE dishwasher middle spray arm supply tube (WD21X20309) – Take your model number to AppliancePartsPros.com to locate the correct part for your unit.
• Flat head screwdriver
• Safety glasses and gloves

Safety first

Your safety should always be the top priority when performing any appliance repair. 

• Always power off and unplug your appliance or switch off the circuit breaker before you attempt any maintenance or replacement work. This keeps you safe by preventing any risk of electric shock. 
• If the appliance has recently been used, give it plenty of time to cool down before working on it. 
• Take your time while working to prevent accidents and personal injuries. Rushing is the enemy of precision.
• 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 appliance or replacement part. 
• Be gentle when handling or removing parts. Excessive force might damage the appliance 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.
• Don’t test live voltage with a multimeter if you’re unfamiliar with how to prevent short-circuiting.
• 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.
• If your appliance has any parts that hold water, turn off the water supply at the outlet before beginning repairs. Keep towels ready to catch any residual water in the system when removing parts.

Replacement Steps

Step 1 – Remove the Water Supply Tube

1. Open the door all the way.
2. Pull the upper rack out.
3. Reach under the rack and remove the spray arm by turning it clockwise to release and remove it.
4. Take off the cover that protects the hose.
5. Press in on the tab on the side, and at the same time, press on the locking tab on the bottom to release it from the rack.
6. Slide it to the right to pull it off the rack.
7. Use a small flat-head screwdriver to remove the hose from the water supply tube.
8. Grab the water supply tube from the bottom.
9. Press on the release tab at the top to detach the water supply tube from the rack.
10. Drop it down and pull it off the rack.

Step 2 – Reinstall the Water Supply Tube

1. Lift the spray arm up to the bottom of the upper rack.
2. Line it up and snap it into place.
3. Slide the hose onto the water supply tube.
4. Reinstall the cover: line up the locking tabs and snap it into place.
5. Install the middle spray arm by turning it clockwise to lock it in place.

Step 3 – Finish Up

1. Push the dishrack back in.
2. Close the door.
3. Plug the unit back in and turn the water supply back on.
4. Run a short cycle to check for leaks and verify it’s running properly.

More information

Thanks for reading! We hope this guide helped you replace the middle spray arm water supply tube in your GE 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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