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Loosen Mounting Nut — Remove the Old Faucet

Beginner4 hours

Part of project

How to Replace a Kitchen Sink Faucet · Step 4 of 10

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In this video

Working under the sink again, find the mounting nut that secures the old sprayer base to the sink. Unscrew this nut, which can often be done by hand. If it is too tight, use an adjustable wrench or slip-joint pliers to loosen it. Once the nut is removed, go back to the top of the sink and lift the old sprayer base off the sink deck.

Goal: Loosen Mounting Nut

  • Most can be loosened by hand, but if necessary, use an adjustable wrench.

Used in this video

  • Adjustable Wrench (Tool Type: Hand Tools, Power Source: Manual) · optionalLoosening a tight mounting nut.
  • Slip Joint Pliers (Tool Type: Hand Tools, Power Source: Manual) · optionalLoosening a tight mounting nut.
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FAQs

What specialized tools are essential for replacing a kitchen faucet, especially for a beginner?

A basin wrench (like the TEKTON or Husky models listed) is crucial for reaching and loosening nuts in tight spaces under the sink. An adjustable wrench is also a must-have for supply lines. A sturdy bucket will catch drips and keep your workspace clean.

What's the most critical safety step before I start, and what should I do if old connections are corroded and won't loosen?

Always turn off the water supply to the sink, either at the shut-off valves under the sink or the main house valve. If connections are stuck, apply penetrating oil, let it sit, and use a basin wrench with steady pressure. Avoid excessive force to prevent stripping or damaging pipes.

The project estimates 4 hours, but I'm a complete beginner. Is this realistic, and what could make it take longer?

For a complete beginner, it's wise to budget 6-8 hours. Old, corroded parts, extremely tight working spaces, or unexpected plumbing issues can significantly extend the installation time. Don't rush; taking your time prevents costly mistakes.

After installing the new faucet, I'm noticing drips or leaks. What are the most common culprits I should check?

First, ensure all water supply lines are securely tightened to the faucet and the shut-off valves, but don't overtighten plastic nuts. Next, check if the mounting nuts under the sink are snug and that the faucet's base gasket is properly seated and compressed against the sink surface, preventing leaks from above.

Transcript
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Underneath, loosen the mounting nut that connects the old sprayer to your sink. Then remove the assembly. To install the new sprayer, apply a 1 ¼ inch bead of plumbers putty along the bottom edge of the sprayer base.

Auto-generated transcript. May contain errors.