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Install New Cartridges — Install the New Delta Cartridge

Beginner2 hours

Part of project

Delta Shower Cartridge Replacement: A Step-by-Step DIY Guide · Step 4 of 5

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In this video

Insert the new cartridges into the valve bodies, ensuring they are correctly oriented. Hand-thread them first to avoid cross-threading. Then, use the shower valve socket wrench and screwdriver to tighten them clockwise until they are snug. Be careful not to overtighten, which can damage the O-rings or the valve body.

Goal: Seat and tighten the new cartridges

  • Applying a small amount of plumber's grease to the O-rings can make installation smoother and help create a better seal.

Used in this video

  • Shower Valve Socket Wrench (brand: Unknown, Material: Metal) — Gripping and turning the faucet cartridges for installation.
  • Screwdriver (brand: Unknown, Screwdriver_Type: Phillips) — To act as a handle for the shower valve socket wrench, providing leverage to tighten it.
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FAQs

Do I really need a special cartridge puller tool for this Delta shower cartridge replacement?

While not always mandatory, a Delta cartridge puller tool can be invaluable, especially if the old cartridge is stuck due to mineral buildup. You might get by with needle-nose pliers and a a flathead screwdriver if it's not too stubborn, but having the puller prevents frustration and potential damage to the valve body.

The project says 'beginner' and '2 hours.' Is this accurate for a first-timer, and what's the typical cost of a new Delta cartridge?

Yes, this project is generally beginner-friendly, but a first-timer might take closer to 2-3 hours, especially if the old cartridge is difficult to remove. A new Delta cartridge typically costs $20-$50, depending on the specific model and where you purchase it.

What should I do if the old Delta cartridge is stuck and won't come out after removing the retaining clip?

A stuck cartridge is a common issue, often due to mineral deposits. Ensure you've removed the retaining clip. If it's still stuck, firmly but gently twist with needle-nose pliers, or use a dedicated Delta cartridge puller tool which provides better leverage. You can also try applying penetrating oil around the cartridge base and letting it sit for a few minutes before trying again.

How do I make sure I buy the correct Delta replacement cartridge for my specific shower?

Delta manufactures several cartridge models. The best way to ensure you buy the correct one is to remove your old cartridge first and take it to the store for comparison. Alternatively, check your shower trim for a model number or consult Delta's website with photos of your existing faucet to identify the part number.

Transcript
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then I come in and remove the cartridges and I'll take that to the supply house to match it. So I know I get the right one, but be careful when you do that. Like today, for instance, when I was getting these, I had to dig through two or three different packs because people will come in and take a washer or an O-ring or something out of the pack that they need. And if you don't catch it while you're at the store getting it, you're screwed. So something to always look out for. It sucks you got to do that, but that's just the world we live in.

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