Install New Mounting Assembly — Remove Old Mounting Assembly
Part of project
How to Replace a Garbage Disposal and Install a Standard Sink Drain · Step 4 of 7
In this video
From underneath the sink, place the fiber gasket, then the backup flange, and finally the mounting ring over the neck of the newly installed sink flange. While pushing up on the mounting ring, install the snap ring into the groove on the sink flange to hold the assembly in place. Use a screwdriver to evenly tighten the three screws on the mounting ring, which will compress the assembly and squeeze out excess putty. Wipe away the excess putty from inside the sink.
Goal: Securely attach the mounting hardware to the sink
- Tighten the three screws in an alternating pattern to ensure even pressure and a level flange.
Used in this video
- Screwdriver (Screwdriver_Type: Phillips) — Tightening the mounting screws
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FAQs
Is this project truly beginner-friendly, and what's the biggest challenge for a DIYer who hasn't done plumbing before?
Yes, this project is rated as beginner-friendly, primarily involving basic connections and hand tools. The biggest challenge often lies in ensuring all new PVC connections are properly tightened and sealed to prevent leaks, which requires careful application of plumber's putty and snugging fittings without overtightening. Patience and methodical testing are key to success.
The tool list includes several specific screwdrivers and pliers; are all of them absolutely necessary, or can I get by with fewer?
While the Channellock pliers are highly recommended for their grip and leverage on stubborn nuts and pipes, having a range of slotted screwdrivers is crucial for different screw types on the disposal's mounting assembly and hose clamps. A putty knife is also essential for correctly applying plumber's putty for a leak-free seal. Having the right tools prevents stripping screws and makes the job smoother.
What are the most common mistakes people make when replacing a disposal with a standard drain, and how can I avoid leaks?
The most common mistakes are not properly sealing the sink strainer with plumber's putty and overtightening PVC connections, which can lead to cracks. To prevent leaks, apply a generous, even bead of Oatey Plumber's Putty under the sink strainer flange. For PVC, hand-tighten nuts first, then use pliers for a final quarter-turn, ensuring all washers are seated correctly. Always fill the sink and test thoroughly for leaks before concluding the project.
My dishwasher drains into the disposal; how do I ensure it drains correctly after removing the disposal and installing a new drain?
You'll need to reconnect the dishwasher drain hose to the dedicated branch on your new sink drain assembly, such as the one included in the SnappyTrap DK-110 kit for double bowls. Secure the hose firmly with a new stainless steel hose clamp, like the Everbilt 5-7 in. clamp, to ensure a tight, leak-free connection. This ensures your dishwasher continues to drain properly into the new standard drain setup.
Install New Mounting Assembly — Remove Old Mounting Assembly
Part of project
How to Replace a Garbage Disposal and Install a Standard Sink Drain · Step 4 of 7
In this video
From underneath the sink, place the fiber gasket, then the backup flange, and finally the mounting ring over the neck of the newly installed sink flange. While pushing up on the mounting ring, install the snap ring into the groove on the sink flange to hold the assembly in place. Use a screwdriver to evenly tighten the three screws on the mounting ring, which will compress the assembly and squeeze out excess putty. Wipe away the excess putty from inside the sink.
Goal: Securely attach the mounting hardware to the sink
- Tighten the three screws in an alternating pattern to ensure even pressure and a level flange.
Used in this video
- Screwdriver (Screwdriver_Type: Phillips) — Tightening the mounting screws
Frequently Asked Questions
Is this project truly beginner-friendly, and what's the biggest challenge for a DIYer who hasn't done plumbing before?
Yes, this project is rated as beginner-friendly, primarily involving basic connections and hand tools. The biggest challenge often lies in ensuring all new PVC connections are properly tightened and sealed to prevent leaks, which requires careful application of plumber's putty and snugging fittings without overtightening. Patience and methodical testing are key to success.
The tool list includes several specific screwdrivers and pliers; are all of them absolutely necessary, or can I get by with fewer?
While the Channellock pliers are highly recommended for their grip and leverage on stubborn nuts and pipes, having a range of slotted screwdrivers is crucial for different screw types on the disposal's mounting assembly and hose clamps. A putty knife is also essential for correctly applying plumber's putty for a leak-free seal. Having the right tools prevents stripping screws and makes the job smoother.
What are the most common mistakes people make when replacing a disposal with a standard drain, and how can I avoid leaks?
The most common mistakes are not properly sealing the sink strainer with plumber's putty and overtightening PVC connections, which can lead to cracks. To prevent leaks, apply a generous, even bead of Oatey Plumber's Putty under the sink strainer flange. For PVC, hand-tighten nuts first, then use pliers for a final quarter-turn, ensuring all washers are seated correctly. Always fill the sink and test thoroughly for leaks before concluding the project.
My dishwasher drains into the disposal; how do I ensure it drains correctly after removing the disposal and installing a new drain?
You'll need to reconnect the dishwasher drain hose to the dedicated branch on your new sink drain assembly, such as the one included in the SnappyTrap DK-110 kit for double bowls. Secure the hose firmly with a new stainless steel hose clamp, like the Everbilt 5-7 in. clamp, to ensure a tight, leak-free connection. This ensures your dishwasher continues to drain properly into the new standard drain setup.