Leaking Thetford toilet

Discussion in 'Tech/Mech General' started by sciac2001, Jul 26, 2016.

  1. sciac2001

    sciac2001 Funster

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    My Aviano's toilet has been seeping drops of wee which run down into the toilet cabinet and i to the innards. The smell is not a nice one to have so we purchased a new seal for the cassette and this helped initially but not for long and it has been useless ever since. We now pack stacks of kitchen towel all over the front of the cassette so that nothing leaks into the "guts" of the vehicle, which it had done initially. Every other day or so the towels would be drenched in wee and so the circle went on.
    I suspected that the cassette was probably sitting too low to make a tight seal between it and the toilet cabinet so I placed a squared piece of thin cardboard (from a San Miguel lager pack) to lift the cassette. Surprisingly it has worked. Either the cassette is too low or the cabinet is too high.
    Obviously a very inconvenient and unacceptable way of sorting this out as we need 2 people to ensure that the cardboard does not ride up the locker whilst the cassette is slid in.
    We have our habitational service tomorrow and this is one of my challenges to the workshop.

    However, this forum usually has very experiencd and knowledgeable funsters and perhaps someone can help with a more sophisticated solution?
     
  2. jockaneezer

    jockaneezer Funster

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    What model bog is it ? If your cassette is fitted with wheels, sometimes the tyres can wear down and prevent it mating up with the loo. Wrapping electrical tape around the wheels can build up the diameters sufficient to sort it out.
     
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  3. sciac2001

    sciac2001 Funster

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    I think its a C-402 and it has wheels.
    Will give that a go for sure. Keep you posted.
    Many thanks.
     
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  4. Big Nick

    Big Nick Funster

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    Buy a new cassette?
     
  5. Richard Birkett

    Richard Birkett Funster

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    I had a similar thing back when I bought my old hymer. It turned out that the rubber seal in the top of the cassette had been damaged. It's easy to replace if that is the problem and a periodic spray of thetfords lubricant is a good idea. Good luck
     
  6. sciac2001

    sciac2001 Funster

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    Buying a new cassette may be the solution but I need to find out if the seal will be totally flush (pardon the pun) with the cabinet. Personally I think that it is sitting fractionally too low. Jockaneezer's theory will be my first port of call. After all, with the new seal that I already have on my existing cassette - also regularly lubricated with Thetford's own product - the actual cassette unit is itself almost new and only a year or two older than the seal bought last year.
    Wish me luck!
    Thanks all anyway.
     
  7. tonyidle

    tonyidle Funster

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    Is the seal fitted upside down?
     
  8. sciac2001

    sciac2001 Funster

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    Nope. All correct. (Fitted by motorhome workshop.)
     
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