Mira 88 (old style) exposed shower valve

[dilpz213]

Hi All,

The other day, my Mira 88 Exposed shower valve got stuck open i.e the knob no longer turns anti-clockwise to stop the water flow. I've managed to get the shower valve off the wall and have seen that there is a Mira 88 service pack that should allow me to renew the shower:

http://www.plumbworld.co.uk/mira-88-spares-service-pack-3987-8781

The only thing is that I cannot for the life of me work out how to open the shower valve to get to the insides. Some stuff I have read online says you have to get the temperature knob off but I dont know how (Ive tried pulling it with a pair of pliers to no avail). Any ideas?

The shower valve is as the image below:
//www.diynot.com/network/dilpz213/albums/

Any help much appreciated.

Dilpz213

 

[Terrywookfit]

Prise temp control knob off.
Remove circlip and remove flow knob.
Undo large brass inner nut.
Strip ,clean ,replace seals,lubricate and reassemble.

Simples!!

 

[doitall]

I don't like saying it but Anti-clockwise turns the water on not off.

 

[dilpz213]

LOL - wish anti-clockwise was the problem but it doesnt move in any direction. What would you guys suggest it is prised off with (screwdriver?)

 

[denso13]

Yes, should come off with screwdriver type thing. It is just a push fit.

 

[oilboffin]

Ahhh Mira 88 one of the best valves ever made IMHO all the advice you've been given is ok you'll have no trouble with it just give it plenty of petroleum jelly and it won't need touching for years

 

[JohnD]

Silicone Grease has been invented now

 

[dilpz213]

Hi Guys,

Over 18 months on and I'm back The Mira 88 shower valve has gone again and has stuck open. Last time, I bought the service kit for it but couldnt work out how to undo the big brass nut behind the metal flow control knob. Luckily, a soak in some white vinegar got rid of the limescale in it and it started turning again.

This time, I want to fix it properly with the service kit so I'm back to square one with this big nut behind the metal flow control knob. Anyone got any ideas as to what I can use to undo it?

 

[Terrywookfit]

A large adjustable spanner.

Or a Plumber!!!

 

[doitall]

post an email address and I'll scan the service manual over.