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Inspect and Clear Grinding Chamber — Visually Inspect and Clear the Grinding Chamber

Beginner45 mins

Part of project

How to Fix a Humming or Jammed Garbage Disposal · Step 2 of 5

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In this video

With the power still disconnected, use a flashlight to look down into the sink drain and inspect the grinding chamber. Move the rubber splash guard aside to get a better view. If you can see the object that caused the jam, use pliers or tongs to reach in and remove it. Never use your hand. Ensure the grinding plate can spin freely by hand (using a wooden spoon or other tool to push it).

Goal: Remove the foreign object from the disposal

  • The video shows a person using their hand, but it is strongly advised to use tongs or pliers for safety.

Used in this video

  • Flashlight (brand: Milwaukee, Tool Type: Flashlight, Power Source: Cordless, Material: Plastic, Size: Small, Specific Use: Testing, Safety Features: N/A)Illuminating the inside of the grinding chamber.
  • Tongs (brand: N/A, Tool Type: Tongs, Power Source: Manual, Material: Metal, Size: Medium, Specific Use: Cleaning, Safety Features: N/A)Safely removing obstructions from the grinding chamber.
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FAQs

Why is it crucial to disconnect power before working on the garbage disposal, and what's the safest way to do it?

Disconnecting power is essential for your safety to prevent accidental activation and electrical shock. Always turn off the circuit breaker that controls the disposal, not just the wall switch, and consider testing with a voltage tester if unsure. This ensures the unit cannot unexpectedly start while your hands are near the grinding chamber.

Do I need a special tool to manually free the jammed motor, or can I use a standard wrench?

Most garbage disposals come with a specific hex-head wrench (often called an Allen wrench or jam-buster wrench) designed to fit the bottom center hole. If you don't have this, a 1/4-inch hex Allen wrench or the specific Klein Tools socket mentioned in the project can often be used to manually turn the motor shaft from the bottom of the unit. Using the correct tool ensures a proper fit and prevents stripping the opening.

I've cleared the grinding chamber and pressed the reset button, but my disposal is still humming. What should I do next?

A humming sound after clearing and resetting indicates the motor is still trying to turn but is stuck. The next step is to manually free the jammed motor using the hex-head wrench from the bottom of the disposal. Insert the wrench into the center hole and turn it back and forth several times to dislodge any remaining obstruction or free the impellers.

This project is listed as 'beginner,' but what if I'm uncomfortable working with plumbing or electricity? When should I call a professional?

While this is a common beginner DIY fix, if you're uncomfortable with basic electrical safety (turning off circuit breakers) or reaching into the disposal's grinding chamber, it's always best to call a licensed plumber. If the disposal hums even after clearing jams, manually freeing the motor, and resetting the button, or if you suspect an electrical issue beyond a simple reset, professional help is warranted.