Newbie requesting help with a geberit flush valve

[Hornet99]

If you have to remove the cistern make sure you have a new doughnut!

If I have to remove the cistern I'm getting a professional involved! I'm far to ham fisted to do that much.......

 

[Gasinspect]

Sometimes just a build up of gunge on the rubber, can try getting finger or but of cloth under and wiping it. Don't use those blue lumps of stuff that hang in the cistern, they ruin the seals.

 

[Hornet99]

Sometimes just a build up of gunge on the rubber, can try getting finger or but of cloth under and wiping it. Don't use those blue lumps of stuff that hang in the cistern, they ruin the seals.

I've felt the seal and can feel that it's rough. Never use the stuff that stuff that turns the water blue....

 

[Hornet99]

Just wanted to thank everyone for responding. The conclusion is that I need to remove the cistern, there's no way around it unfortunately.....