fitting New cistern

[june.d]

can anyone tell me how I could replace an old cistern ? it is a low level
one, not close coupled, and how difficult is would be.

Learner

[Plus net]

Do you want Close coupling?? if yes then you need to change the toilet pan
and Cistern for that type.or If you simply want to change the the Low level
cistern. first part is the same

1) Turn off water.
2) Flush toilet and use cloth or if you have Wet / dry Vaccum to empty
fully remaining water in cistern.
3) Under large nut under cistern connecting to 40mm pipe to toilet pan and
remove the pipe
4) Undo water inlet and overflow pipes.
5) Remove the two screws or what ever fitting attaches cistern to wall and
remove cistern

Now if you are simply replacing cistern do in reverse your new cistern
should be complete with fittings and washers

If however you are changing from Low Level to Close coupling

(1) - (5) as above
6) Undo the four screws fastening pan to floor
7) Break away the Toilet pan outlet pipe in some instances you literally
have to break the joint (Remember broken pottery is sharp use Glove,
Safety goggles etc
8) Making sure that the outlet pipe is the same ie P or S or any special
side exit usually near enough standard fixing
9) purchase a straight coupling spiggot connector ( one side fits inside the
soil pipe the outlet pipe from toilet pipe fits inside the coupling both
sides use rubber gasket to seal the joints
10) Fit toilet in spiggot as above and ensure that the toilet fits tightly
into spiggot and is in the correct position fasten the four brass screws to
pan with rubber protection washer (Do not over tighten)
11)The Close coupling cistern is usually fitted onto the toilet pan with
large (doughnut) seal rubber or Wax forming a seal between the pan and
cistern syphon tube outlet via a metal plate and two long screws through
holes in the pan extention.
tighten but not over tighten.
12) You will now have to alter your water inlet pipe and the overflow pipe

If you change styles then legally as of the 1st January 2001 you should fit
the new water saving 6ltr dual flush style rather than 7 ltr dual but you
may have some difficulty doing this as I ask a plumbing wholesaler and they
had no idea about this.

Also the overflow no longer needs to be outside and visible it could be fed
into the pan under the seat if you can get a thin tube to fit or into a
suitable waste pipe remember you must preveny backflow so one way valve
maybe needed

Hope this helps

Bob

[Ian Jarvis]

Re the overflow pipe....

I'm just about to fit a new bog , i.e. go from a distant to a close coupled
pan. My current overflow comes out top right, but my new bog is fed and
overflows through the bottom.

Is the some kind of common fitment to fed it into the pan or drain , or is a
manually frigged up joint.

I ain't got a big masonary drill , so I can't drill another hole.

IJ

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