repacing a Aqualisa Aquatique thermostatic mixer valve

[stringman]

Hi all

thanks to the excellent posts here I have realised i need to fit a new mixer valve / cartridge for my shower

http://www.shower-spares.co.uk/aqualisa/aquatique_thermostatic.htm

it is of the hidden type.
I have got the tap etc removed leaving the cartridge exposed
but i can see no way of actually getting the cartridge out!
I have removed the four screws that attach the cartridge to the body but it doesnt want to budge,
I dont want to force and make it worse.

any advices please?

Thanks

 

[seco services]

It'll only be stuck with the gasket that sits behind it.
it has nothing else holding it once the 4 screws are removed.

 

[stringman]

Thanks for that
I gave it a bit of welly and it came out.
greased all the o rings but its still leaking
so i guess i need a new cartridge!

being stupid when i drained the water from the tank in the loft i then turned of the bath taps and now have airlocks in both taps
is the only way to get rid of it by connecting a hose to a mains pressure tap or can i just re drain the tank, open the taps and re fill??

thanks

 

[seco services]

you can try draining it and refilling leaving taps open then as each one starts to run shut it.
does work but not all the time.