I have a diverter switch on my shower/bath.
This diverts the water to a overhead shower or a flexi-head shower or to fill the bath.
there is a plastic cap on the control and underneath there is a grub screw, I have removed these but cannot remove the round chrome knob.
I can see a large ring washer that probably needs changing behind the knob, could someone advise me on the best way I can remove the control knob so I can change th O ring. Best Regards Colin

colin stamp, December 2010

Hi Bucket Head. Thanks for your answer.
The 5 way diverter is part of a whirlpool bath/shower unit about 5 years old imported from Spain and distributed by Tiles R us. the side and back panel is plastic and the other side panel is glass.
I'll give it a go with a hair dryer instead of a blow torch as the diverter is mounted on the back plastic panel.
I have a plummer calling to change a heat exchanger on my boiler soon!! and see what he thinks.
Over the phone he doesn't seem all that interested unless he has a detailed instruction manual on the diverter, which I haven't got.
I'll let you know what happens. Kind Regards Colin

Colin Stamp, December 2010

Hi Colin,
My appologies but there so many of these mixer bath/shower fixtures that its nearly impossible to see how the fittings are related. Presuming the knob can be removed, if it is very old, (which it sounds) it may require heat to move it. Once you have introduced heat of a greater circumstance then you may be fully commited to removal as 'o' rings start to melt. Alternatively if the body is hexagonal and you can get a wrench on it then you can lightly tap the wrench near the jaws on the handle to gently release it.
No hexagonal body? then you will need stillsons and a rag to avoid taking the chrome off. If you heat it, then do so gently in stages with a blow torch lightly tapping and then finally use muscle power to release it(usually turning anti clockwise) No Joy? maybe a new shower mixer, dificult to say.. Good luck.. don't drown

Bucket head, December 2010