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How to Replace a Toilet Cistern - Simple and Quick Guide

by E Cavendish 15 Mar 2024 0 Comments
How to Replace a Toilet Cistern - Simple and Quick Guide

Table Of Contents:

Introduction : 

Are you tired of your toilet cistern constantly causing issues? Is it time for an upgrade or a fix? In this comprehensive guide, we will walk you through the process of how to replace a toilet cistern. 

Whether you're dealing with a leak, a faulty flush mechanism, or just want a newer model, we've got you covered. By the end of this article, you'll be well-equipped to tackle this plumbing project confidently.

Tools and Materials You'll Need

Before you dive into the cistern replacement process, gather all the necessary tools and materials. Here's what you'll need:

  • Adjustable wrench
  • Spirit level
  • Pencil
  • Screwdriver
  • Towel
  • Pipe cutter (if required)
  • New toilet cistern
  • Rubber gasket
  • Bolts and washers (rubber and metal)
  • Water inlet pipe
  • Pipe thread sealant
  • Manufacturer's instructions (follow these closely)
  • Now that you've assembled your toolkit let's move on to the next steps.

    Step By Step Process: How to change a Toilet Cistern

    Preparing to Replace the Toilet Cistern

  • Turn Off Water Supply: Locate the water supply valve usually situated on the wall near the base of the toilet. Turn it clockwise until it's fully closed. This stops the water flow to the cistern.
  • Drain the Cistern: Flush the toilet to drain as much water as possible from the cistern.
  • Disconnect Water Supply: Use your adjustable wrench to disconnect the water inlet pipe from the cistern.
  • Removing the Old Cistern

    removing old cistern

  • Remove Fixing Bolts: Inside the cistern, you'll find fixing bolts that secure it to the toilet pan. Unscrew these bolts and keep them aside.
  • Detach the Cistern: Carefully lift the old cistern from the toilet pan and place it aside.
  • Inspect the Rubber Gasket: Check the rubber gasket around the flush entrance. If it's damaged, replace it with a new one.
  • Installing the New Cistern

  • Position the New Cistern: Place the new cistern over the toilet pan, aligning the fitting holes.
  • Secure with Bolts: Insert the new rubber and metal washers onto the bolts, and then thread them through the fitting holes. Tighten the nuts securely, but avoid over-tightening to prevent damage.
  • Connect the Water Inlet: Reconnect the water inlet pipe to the cistern using your adjustable wrench. Apply pipe thread sealant to ensure a watertight connection.
  • Connecting Water Supply and Testing

  • Open Water Supply Valve: Turn the water supply valve back on, allowing water to flow into the cistern.
  • Check for Leaks: Observe the cistern for any leaks around the water inlet and flush mechanism. Tighten connections if necessary.
  • Test the Flush: Flush the toilet a few times to ensure the mechanism is functioning correctly. Adjust the flusher or seat if needed.
  • Troubleshooting Tips

  • Toilet Keeps Running: If the toilet keeps running, check for excess water entering the cistern. Adjust the float valve according to the manufacturer's instructions.
  • Leaks: If you notice water pooling around the base of the cistern, ensure that all connections are tight and the rubber gasket is in good condition.
  • Low Flush Power: If your new cistern doesn't flush effectively, it may be a design issue. Contact the manufacturer or consider replacing the flush mechanism.
  • Conclusion

    Congratulations! You've successfully learned how to replace a toilet cistern. By following the steps outlined in this guide and using the right tools, you've tackled a common plumbing issue. 

    Remember, safety first, and always follow the manufacturer's instructions for your specific cistern model. With your new cistern in place, you can enjoy a properly functioning toilet and potentially save on water bills if you've upgraded to a more efficient model. Happy plumbing!

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