Dual flush stopped working

[JohnHarrison]

Wiggle a bit left and right and lift up at the same time

Eureka!!! Well, a squirt of WD40 did the trick. Thanks again Shaun. I've decided to leave the bottom part in place rather than replace it with the new one.

 

[JohnHarrison]

Eureka!!! Well, a squirt of WD40 did the trick. Thanks again Shaun. I've decided to leave the bottom part in place rather than replace it with the new one.

I see that the bottom part has got the overflow attached to it so this job is getting more complicated than I thought. I think I'll have to send for a plumber! Can't believe I installed a Mira Event shower and yet this has got me beat.
If any qualified plumbers have been following this & can finish the job then please get in touch.

 

[JohnHarrison]

By the way I live in Sandbach, Cheshire.

 

[ShaunCorbs]

Leave the overflow in place you won’t need to swap that it’s just the flush that’s causing problems

leave the cradle in and just swap the green part and new tubes etc

 

[JohnHarrison]

Leave the overflow in place you won’t need to swap that it’s just the flush that’s causing problems

leave the cradle in and just swap the green part and new tubes etc

After a short break, I've had another go & I'm trying exactly that so thanks for confirming. It's very fiddly getting the slots lined up so that the valve drops into place before I can rotate it. So I'm having a short break before trying again. Thanks again for your support.

 

[JohnHarrison]

Well, I've done it but I'm not completely happy with it. There are only 2 ways the valve will fit - 180 degrees apart - both of which cause the tubes entering the valve to get squashed against the cistern housing. The old valve was not like this. I've tested full & short flushes, both of which are not as responsive as they should be. Anyway, we'll see how it goes

 

[ShaunCorbs]

Any pictures?

 

[JohnHarrison]

Any pictures?

 

[ShaunCorbs]

Sorry of the tubes ?

 

[JohnHarrison]

Sorry of the tubes ?

I had to give my head a break from the job.
The new valve has snibs on which prevent it from rotating as far as the old one did. This meant that I could not avoid both tubes being bent at their exits against the cistern walls - restricting airflow. The full flush, however, was excellent but not the short flush.[The push button unit had a broken piece & was loose so I bought a new one & installed it.]
I knew I had to rotate the valve so that the tubes were not squashed but it's only today that I've had the confidence to tackle this. Using a pair of grips I loosened the large plastic nut underneath (had to put a mirror underneath to see)until I could rotate the valve. The tubes are now free. But even after tightening the nut, there is a leak - I tested with a small amount of water in the cistern after putting lots of towels under. There's another nut (more rounded shape) which may resolve the the leak but it wouldn't turn
Now I'm a stuck again so I've contacted a plumber but they've not got back to me yet. So everything looks ready for test apart from the leak. Here are some photos.