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    How to replace a leaky WC Cistern syphon

    Thank you Dilly (AND Denso & Andy). I wouldn't know my arse from my elbow when it comes to installing/repairing WCs if it weren't for you. I'll be back for more advice during my next plumbing project. Until then, Ta-Ra! Each time I do DIY plumbing I come away with renewed respect for you. Keep...
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    How to replace a leaky WC Cistern syphon

    Thanks to you gentlemen, I am happy to report that I have installed my first WC (IMG_9531). It's not perfect. I had to place the pan fixing lugs on the outside (IMG_9532) because my Truvo indicated metal below the floor tile on the left lug of the commode (inside the pan). So I did not risk...
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    How to replace a leaky WC Cistern syphon

    THANK YOU ANDY! I already bought the steel cistern to pan bolts for the old (and now deceased) toilet. I will use them on the new one instead of the shoddy plastic ones. "it will squash it down" - that's why I came for advice to this forum...enthusiasm for DIY is no substitute for years of...
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    How to replace a leaky WC Cistern syphon

    Well, Thanks to you Andy (post #53) & Dilalio (post #58), I've made a lot of progress. I sliced off the flange IMG9509 in post #57, IMG9515 & IMG9516 in the current post. This is because it serves no useful purpose and simply acts as a stand-off spacer in connecting the new pan to the sewer...
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    How to replace a leaky WC Cistern syphon

    Well the old WC is out and the new one is in. But there's a problem. The OD of the pan's drain pipe is 100mm, which snugly fits the inlet gasket of the Floplast connector of post #53. But the exit side of this connector has a concertina gasket with OD = 110mm, whereas the ID of the sewer pipe is...
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    How to replace a leaky WC Cistern syphon

    Wickes will deliver the Toilet and sewer adapter tomorrow. I will then unpack everything & will have to determine which flexible hose to order for the water inlet. It will be my first potty installation and I am looking forward to it. Three years ago I fixed my central heating system following...
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    How to replace a leaky WC Cistern syphon

    Thanks Andy, very helpful. Will the cistern have a side inlet like the existing cistern (see photos in post #32) or will I need a flexible hose like one of these? https://www.screwfix.com/c/heating-plumbing/compression-hoses/cat831678 Finally, please answer the question which I asked in post...
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    How to replace a leaky WC Cistern syphon

    Okay, I understand. Replacing the WC is the best option. I have selected a new one: https://www.wickes.co.uk/Wickes-Cleveland-Easy-Clean-Close-Coupled-Toilet/p/279081?_br_psugg_q=toilet which is slightly better spec than the Screwfix option selected earlier. We come now to attaching the new WC...
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    How to replace a leaky WC Cistern syphon

    Yes Alec. But to select the right one for a particiular job needs a trained and experienced Plumber, which I am not. I just want to finish the job with my limited skill set.
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    How to replace a leaky WC Cistern syphon

    Right guys, I have accepted Alec_t's point about the danger of mismatch in the sewer connection. This kills the replace the WC idea and I'm back to mending the old one. But I have a new idea. To fix the syphon exit tube versus cistern exit hole mismatch I plan on using a expansion bushing like...
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    How to replace a leaky WC Cistern syphon

    Question: There must have been a time when old model WCs like mine were replaced with the modern ones. Surely the modern ones are made to be backward compatible with the old WC sewer connections, or did they replumb the entire sewer drainage system? @dilly :Yes, you too were right, bless your...
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    How to replace a leaky WC Cistern syphon

    You were Andy. But in my case, Better late than never. You live and learn. I have no regrets.
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    How to replace a leaky WC Cistern syphon

    I now agree with you. But It was an educational experience removing the cistern from the pan. Right, what do I need to do to remove the old commode and install the new one? I will prob'ly order this one...
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    How to replace a leaky WC Cistern syphon

    I have an answer to my first question of post #37. I need to use the following adapter seal from Toolstation https://www.toolstation.com/1-12-to-2-adaptor-seal/p20131 This is turned upside down from its position in the photo on the webpage, then the syphon's exit tube is inserted into it, then...
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    How to replace a leaky WC Cistern syphon

    Well Gentlemen, even I was surprised that I succeeded in this Herculean task and managed to lift the cistern from its throne and lay it on its back. By gum, its no joke doing this job, as you lot had warned me. I had to use the Dremel diamond cutting disk to cut partway into the screw shank and...
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    How to replace a leaky WC Cistern syphon

    I will try to avoid undoing/loosening the thin nut and thereby retain the integrity of the inlet to cistern wall water-tightness. Doing this will also keeping the float-valve in its original position, giving me one less thing to worry about. I have enough clearance to slide the cistern to the...
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    How to replace a leaky WC Cistern syphon

    Please take a look at the two attached photos of the water inlet into the cistern, and advise on the best way to detach the cistern from the inlet. IMG_9475_Anno shows both sides of the inlet across the cistern wall, IMG_9476 is a closeup of the inlet on the outside of the cistern wall. I was...
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    How to replace a leaky WC Cistern syphon

    I've attached a photo of my Dremel with a diamond cutter blade mounted in it. Dremel was one of the earliest (if not the earliest) manufacturers of multi-tools.
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    How to replace a leaky WC Cistern syphon

    Well said Dilalio. I have ordered stainless steel fixings (the ones that Denso linked me to, from Screwfix), a doughnut washer (in case I need one) as well as a face visor. I plan on using my Dremel with a diamond cutting disc to cut off the nuts & screws from under the pan. Much safer than...
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