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This question is regarding Mira Excel (1990-96) Cartridge - 903.33

My daughters shower head has a constant trickle from it, can the cartridge be stripped down to fix or does a new cartridge need to be bought?

If so, is it easy to fit?

Asked 8 years ago by Ken Dickson
The cartridge is a sealed unit therefore it needs replaced. If you have problems with an Excel then it's best just to replace the cartridge, however it is probably worth stripping the cartridge out and checking that the inlet filters are clean, before buying a new cartridge. To replace the cartridge Pre 2003 units Turn off hot and cold water supply Pull front temperature knob off The rest of the knob assy. just unclips Remove 4 screws that hold cartridge into body Pull old cartridge forward shouldn't be too tight Set new cartridge for High/Low pressure (instructions with cartridge) Slip new cartridge into place remember to check that the new seals are all in place (and don't drop out as you push back) Tighten screws be careful not to over tighten Refit knobs. Turn on water and test. (Occasionally you will have to reset the cartridge temperature, instructions with cartridge) Easy peasy!!!! Cartridge Mira 903.33 This cartridge supersedes the previous high and low pressure versions Link to cartridge
Answered 8 years ago by Anonymous
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