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Reinstall and Test the Disposal — Install a New Garbage Disposal (Recommended)

Beginner3 hours

Part of project

Garbage Disposal Leaking From Bottom - Stesso · Step 2 of 2

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In this video

Mount the reassembled disposal back under the sink. Lift it up and engage the tabs with the sink flange. Turn the mounting ring clockwise to lock it securely in place. Reconnect the main drain elbow and tighten its fittings. Reattach the dishwasher hose and secure its clamp. Once all plumbing is reconnected, plug the unit back into the electrical outlet. Restore power at the circuit breaker. Run water and briefly turn on the disposal to test for proper operation and check for any leaks.

Goal: Return the disposal to service and check for leaks

  • Before turning on the switch, run cold water into the sink to check for leaks at your plumbing connections.

Used in this video

  • Disposal Wrench / Screwdriver (brand: Unspecified, Tool Type: Screwdriver, Power Source: Manual, Material: Metal, Size: Large, Specific Use: Fastening)Tightening the mounting ring.
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FAQs

Why does this project recommend replacing the garbage disposal entirely instead of trying to repair the leak?

Leaks from the bottom of a garbage disposal often indicate a cracked housing or a failure in the internal seals, especially with older units. These issues are typically not repairable, making replacement a more reliable and often more cost-effective long-term solution than attempting temporary fixes. This approach also prevents future leaks from other aging components.

What is the most critical safety step before starting this project, and why is it so important?

The most critical safety step is disconnecting power to the disposal at your home's circuit breaker. This prevents accidental electrocution, which can be extremely dangerous when working with plumbing and electrical components. Always double-check that the disposal is completely de-energized by trying to flip its switch after cutting power at the breaker.

Besides the listed tools, are there any other common household items or tools I might find useful for this garbage disposal replacement?

Yes, a flashlight will be very helpful for better visibility in the tight space under the sink. You might also need a utility knife or hacksaw if the new disposal requires slight adjustments to your drainpipe length, and a small bucket or towels to catch any residual water from the old unit.

The project is labeled 'beginner' and '3 hours.' Is this realistic for someone with no plumbing experience, and what's the most challenging part?

Yes, this is a realistic estimate for beginners, as the process is primarily a direct replacement. The most challenging aspects are typically working in the cramped space under the sink and ensuring the new mounting assembly is tightened correctly with enough plumber's putty to create a watertight seal. Taking your time and following instructions precisely will make it manageable.

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