Remove Old Flush Valve and Clean Tank — Replace Old Gasket and Bolts
Part of project
How to Fix a Leaking Toilet Tank-to-Bowl Connection · Step 4 of 6
In this video
With the tank removed, take off the large nut on the underside that secures the flush valve assembly. A large pipe wrench may be needed if it's corroded. Once the nut is off, the entire old flush valve assembly can be lifted out from inside the tank. Also, remove the old tank bolts and the large, grimy tank-to-bowl gasket. Clean the area around the flush valve opening and the bolt holes on the tank with a cleaner and paper towel.
Goal: Remove the old flush valve assembly and clean the tank surfaces
- You may need to hold the flush valve from inside the tank while turning the nut from the outside to prevent it from spinning.
Used in this video
- Pipe Wrench (Tool Type: Pipe wrench) — Loosening and removing the large locknut securing the flush valve.
- Paper Towels (Towel Material: Paper towels for quick cleaning) — Cleaning the grime and corrosion from the tank.
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FAQs
How long will this DIY project take for a beginner, and what's the approximate cost?
This is a beginner-friendly project that typically takes 1-2 hours to complete, depending on your comfort level with plumbing. The main expense is a new tank-to-bowl gasket and bolt set, which usually costs less than $20.
What are the essential tools and materials I'll need for this repair, beyond what's listed?
You'll primarily need an adjustable wrench, like the Crescent 12 in. Chrome Adjustable Wrench, a flat-head screwdriver, a bucket (e.g., Unger 6 Gal. Heavy-Duty Plastic Bucket), and plenty of absorbent rags or towels, such as THE CLEAN STORE Cleaning Terry Towels. Work gloves are also highly recommended for comfort and hygiene.
What are the most common mistakes beginners make when fixing a toilet tank-to-bowl leak?
A common mistake is overtightening the tank bolts, which can crack the porcelain tank or bowl; tighten them only until snug, then give an additional quarter turn. Another error is not properly seating the new gasket, leading to immediate leaks, so ensure it's flat and centered.
Are there any specific safety precautions I should take before starting this project?
Always shut off the water supply to the toilet completely using the shut-off valve behind or beneath the toilet before beginning any work. Ensure you have a bucket ready to catch residual water when disconnecting lines and draining the tank, and wear work gloves to protect your hands.
Remove Old Flush Valve and Clean Tank — Replace Old Gasket and Bolts
Part of project
How to Fix a Leaking Toilet Tank-to-Bowl Connection · Step 4 of 6
In this video
With the tank removed, take off the large nut on the underside that secures the flush valve assembly. A large pipe wrench may be needed if it's corroded. Once the nut is off, the entire old flush valve assembly can be lifted out from inside the tank. Also, remove the old tank bolts and the large, grimy tank-to-bowl gasket. Clean the area around the flush valve opening and the bolt holes on the tank with a cleaner and paper towel.
Goal: Remove the old flush valve assembly and clean the tank surfaces
- You may need to hold the flush valve from inside the tank while turning the nut from the outside to prevent it from spinning.
Used in this video
- Pipe Wrench (Tool Type: Pipe wrench) — Loosening and removing the large locknut securing the flush valve.
- Paper Towels (Towel Material: Paper towels for quick cleaning) — Cleaning the grime and corrosion from the tank.
Frequently Asked Questions
How long will this DIY project take for a beginner, and what's the approximate cost?
This is a beginner-friendly project that typically takes 1-2 hours to complete, depending on your comfort level with plumbing. The main expense is a new tank-to-bowl gasket and bolt set, which usually costs less than $20.
What are the essential tools and materials I'll need for this repair, beyond what's listed?
You'll primarily need an adjustable wrench, like the Crescent 12 in. Chrome Adjustable Wrench, a flat-head screwdriver, a bucket (e.g., Unger 6 Gal. Heavy-Duty Plastic Bucket), and plenty of absorbent rags or towels, such as THE CLEAN STORE Cleaning Terry Towels. Work gloves are also highly recommended for comfort and hygiene.
What are the most common mistakes beginners make when fixing a toilet tank-to-bowl leak?
A common mistake is overtightening the tank bolts, which can crack the porcelain tank or bowl; tighten them only until snug, then give an additional quarter turn. Another error is not properly seating the new gasket, leading to immediate leaks, so ensure it's flat and centered.
Are there any specific safety precautions I should take before starting this project?
Always shut off the water supply to the toilet completely using the shut-off valve behind or beneath the toilet before beginning any work. Ensure you have a bucket ready to catch residual water when disconnecting lines and draining the tank, and wear work gloves to protect your hands.