Thetford RS260 toilet problem?
By Bkw141 on Tuesday, 07 November 2017
Posted in Make, or Marque Specific
Replies 12
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I have the above installed in my Rapido V55 cqmpervan which is 9 months old and with 16,000 Kms on the clock. we have had no problems until our last trip. the cassette was 2/3rds full and we travelled over uneven roads in the montains in Italy for the morning. when we got to a service point and i took the cassette out to empty; it had leaked into the bakc channel in the cassette compartment.

there was no evidence of leks, damage or any other thing that could explain this leak. we cleaned, disinfected (repeatedly) and the odour has now gone away. lthough we qere very careful for the rest of the trip and checked frequently under various conditions, it did not reoccur.

has anyone else xperienced htis and is there an explanation?
Unless it becomes a regular occurence I wouldn't worry too much.

The relatively sealed cassette goes through some quite big atmospheric pressure changes when you drive up and down mountains.

I found this out when opening the flap at high altitude... The pressure burst out of the cassette taking liquids with it!

You got off quite lightly
NEILMAC
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6 years ago
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If the problem persists you could try changing the lip seal.

Spinner
Spinner
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6 years ago
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My Thetford C200 cassette has leaked the same twice, but both times it was very full and I parked on very sloping ground for a bit. So I put it down to just being too full.
Tom1
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6 years ago
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I did come across someone a couple of years ago who was struggling with this and when I found out he was trying to fit the seal upside down it sorted it.
Traveller_HA5_3DOM
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6 years ago
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All

thanks for htis.

First, while it was not full, we did go thorugh various hilly roads and they were not the best surfaces. theefore, deduce that, while hte cassette is good, it is not completely sealed so combinaiton of full(ish) and rocky drive, could cause leaks!

just glad it did not build up the pressure resulting in blow back!!!!

will keep you all posted if it happens again.
Bkw141
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6 years ago
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I put a new seal on mine about 2 years ago.
Tom1
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6 years ago
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All

thanks for advice regarding replacement seal. However, it is relartively new and the seal is in perfect condition. I usually check at end of each trip and put silicone grease on it to keep it supple (in the toilet manual as recommended).

It seems to be a useful lesson; do not travel on mountaion/uneven roads when the toilet cassette is full (or try and open at very high altitudes!)!

the dealer is going to check it out in December as well so, if any further information, will share it with you all.
Bkw141
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6 years ago
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All

as promised, an update!

the dealer looked at the problem and replaced the toilet fittings that connect the toilet to the cassette. it had been fitted badly and was not connecting correctly thus allowing leakage when on the move.

that said, as the winter has arrived, we have not yet tested it fully but seems to be OK.
Bkw141
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6 years ago
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Fingers crossed it has solved the problem
katmax
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6 years ago
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katmax
Fingers crossed it has solved the problem

Or legs crossed if it hasn't!

(sorry couldn't resist )
NEILMAC
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6 years ago
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I resisted commenting that it must be a relief to have it fixed ...
katmax
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6 years ago
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Hopefully fixed and i look forward to being relieved!!!!!!!
Bkw141
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6 years ago
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