lindaquinn20 Posted May 4, 2017 Share Posted May 4, 2017 Cassette when stood upright and full, leaks from yellow knob that opens centre of cassette. Is it possible to replace it. Any help would be very much appreciated and if not anyone know the cost of replacing the cassette' Thank you Linda Link to comment Share on other sites More sharing options...
PJay Posted May 5, 2017 Share Posted May 5, 2017 lindaquinn20 - 2017-05-04 11:16 PM Cassette when stood upright and full, leaks from yellow knob that opens centre of cassette. Is it possible to replace it. Any help would be very much appreciated and if not anyone know the cost of replacing the cassette' Thank you Linda Probably needs a new gasket! You can buy these, and you should keep it lubricated , once in a while. PJay Link to comment Share on other sites More sharing options...
Solwaybuggier Posted May 5, 2017 Share Posted May 5, 2017 It's probably Thetford rather than Fiamma - and if you go on their website there are quite good instructions for a lot of the maintenance functions. Link to comment Share on other sites More sharing options...
Derek Uzzell Posted May 5, 2017 Share Posted May 5, 2017 In Linda’s only prior posting (in 2010) she mentioned owning a 1999 N+B Arto. http://forums.outandaboutlive.co.uk/forums/Motorhomes/Hints-and-Tips/Shower-room-sink-tap/18560/ If that’s still the case, then I agree with Solwaybuggier that the toilet-cassette more probably comes from Thetford than Fiamma - and the most commonly fitted unit back then would have been the C200 swivel-head unit. https://www.thetford-europe.com/product/c200/?product=c200 The yellow ‘blade-opener’ for a C200 is available as a spare part http://tinyurl.com/mestvjg Repairs to a C200’s blade-opener are described beginning on Page 25 of this link https://www.caravansplus.com.au/pdf/thetford/thetford-repair.pdf and it will be seen that the principles involved in replacing the yellow ‘knob’ are simple enough, but complicated by access needing to be made through the blade-valve's aperture. Leakage from the blade-opener knob will either be due to the knob’s rubber seal having worn and/or ‘scale’ build-up on the rubber seal’s surface. Removing the blade-opener and soaking the assembly in a strong citric acid solution (to remove the ‘scale’) might well cure the present leakage problem, but to do this would, of course, require the blade-opener to be removed! An immediate solution would be to replace the complete cassette, and the least expensive way of doing this is probably to obtain the appropriate Thetford “Fresh Up” kit that comprises a new (now wheeled) cassette, a new seat and lid and some toilet chemicals. Asking-prices vary, but this is the cheapest I could find with a brief GOOGLE-search. http://tinyurl.com/l2rxovm (Linda - a lot of assumptions are being made above. These may be incorrect (eg. your motorhome’s toilet may actually be a Fiamma product), so if they are, you’d better say now...) Link to comment Share on other sites More sharing options...
lindaquinn20 Posted May 5, 2017 Author Share Posted May 5, 2017 Sorry for giving you misleading information it is a Thetford cassette. Our Motorhome is a 99 Arto a great little Motorhome. Thank you all for your kind helpful assistance. B-) Link to comment Share on other sites More sharing options...
Derek Uzzell Posted May 5, 2017 Share Posted May 5, 2017 You haven’t said how bad the leak is, but if it’s just a ‘weep’ through the blade-opener knob’s seal, you could try the following: 1: Make up a strong citric acid solution (say 100g of citric acid powder in one litre of warm water). 2: Make sure the cassette is empty and its emptying cap is on tightly. 3: Pour the citric acid solution through the cassette’s open blade-valve and then close the blade-valve via the yellow blade-opener knob. 4: Turn the cassette face down (ie. with its upper surface facing downwards) and leave for several hours to allow the citric acid solution to leak through the blade-opener’s seal. Then turn the cassette face up and open and close the blade-valve a number of times via the yellow blade-opener knob. Close the blade-valve again, turn the cassette face down again and leave for a few more hours. Turn the cassette face up and open and close the blade-valve a number of times via the yellow blade-opener knob. 5: Keep repeating the procedure described in 4 for as long as your patience will stand. 6: if you are lucky the citric acid solution will dissolve any ‘lime scale’ on the blade-operner knob’s rubber seal and the residue will be rubbed off by the repeated movement of the blade-opener. If the present leak is considerable (suggesting that the blade-opener knob’s rubber seal is damaged) the above suggestion won’t work, but it may be worth trying for a minor leak if you’ve got the time and inclination. Citric acid powder is readily available on-line (example here) https://www.amazon.co.uk/CITRIC-ACID-Anhydrous-Grade-Additive/dp/B00WQ7632E/ref=sr_1_3?ie=UTF8&qid=1493987454&sr=8-3&keywords=citric+acid and is a good way of removing the lime scale that naturally builds up inside a toilet cassette over time. An annual treatment using, say, 100g of citric acid powder in two litres of warm water is worthwhile, particularly if the toilet is used a lot. Link to comment Share on other sites More sharing options...
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