How to replace a leaky WC Cistern syphon

Do you have through bolts that go through the cisten and through the toilet, are they plactic bolts?
If so throw them away and buy these:


And keep the washer you have, it will squash down.

Andy
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 practical plumbing experience.
 
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 practical plumbing experience.

As per @HERTS P&D use metal bolts and do each side up a bit at a time until the donut washer completely compresses down, pushing down on the top of the cistern, alternating left and right makes it easier to spin the wing nuts up, before final tightening.
If you're securing cistern to the wall, don't worry about screwfixing it - just a bead of silicone along the top edge... Not slathered all down the back of it!
 
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 drilling there. Because of the fixed location of the sewer pipe, I couldn't move the commode from its sewer connection and had no other choice than to put the lugs outside. IMG_9527 is a shot of the inside of the cistern, to show the stainless steel cistern to pan sealing/securing bolt, which Andy recommended. I already had two pairs of mild steel bolts which I got repairing the previous, and now deceased, WC. But decided to use the stainless fixings, after my experience in having to cut off the rusted mild steel ones under the previous WC's pan.
The instructions for putting in the seat fixings were a complete dog's breakfast, but I did the best I could and am happy with the result. No leaks or weeping so far. I had to replace the 900mm flexible hose with a 1500mm one.

I look forward to more adventures in plumbing in future, including installing additional potties. Thanks once again for your patient and helpful advice & assistance.
 

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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 drilling there. Because of the fixed location of the sewer pipe, I couldn't move the commode from its sewer connection and had no other choice than to put the lugs outside. IMG_9527 is a shot of the inside of the cistern, to show the stainless steel cistern to pan sealing/securing bolt, which Andy recommended. I already had two pairs of mild steel bolts which I got repairing the previous, and now deceased, WC. But decided to use the stainless fixings, after my experience in having to cut off the rusted mild steel ones under the previous WC's pan.
The instructions for putting in the seat fixings were a complete dog's breakfast, but I did the best I could and am happy with the result. No leaks or weeping so far. I had to replace the 900mm flexible hose with a 1500mm one.

I look forward to more adventures in plumbing in future, including installing additional potties. Thanks once again for your patient and helpful advice & assistance.

Enjoy sit/shiting on your new throne.
All hail king @siliconeseal

xx
 
Enjoy sit/****ing on your new throne.
All hail king @siliconeseal

xx
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 it up boys! (y)(y)(y)
 

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