Thetford Cassette C3

[jo10000_6]

Hi

I'm told my Thetford Cassette is missing a "Breather" - hence the hole ? Is this item called anything else ?

Also, on first rinse and clean the little round thing with the hole in it (technical terms ) came out when being rinsed - is this part of the breather ?

If I order a new one are they easy to fit ?

Thanks
Jo

 

[tonka]

Do a search on Thetfords website and also on youtube.
There is service / repair info and videos on "how to"
Also you should find a parts list..

 

[jo10000_6]

Hi Tonka - had a look at Thetford stuff and whilst kinda have an idea I'm on the right track wanted to be sure.

I even dropped an email to Thetford which fell on totally deaf ears so I'm assuming they don't respond direct perhaps just through a dealer network?

Anyways should also have pointed out
I'm not that technical and if someone says "hey jo that's quite easy" I'd give it a go but much more than that I'd be struggling.

Thanks for the message though - it's good of you to reply.

Ta very much Jo

 

[tonka]

Hi Tonka - had a look at Thetford stuff and whilst kinda have an idea I'm on the right track wanted to be sure.

I even dropped an email to Thetford which fell on totally deaf ears so I'm assuming they don't respond direct perhaps just through a dealer network?

Anyways should also have pointed out
I'm not that technical and if someone says "hey jo that's quite easy" I'd give it a go but much more than that I'd be struggling.

Thanks for the message though - it's good of you to reply.

Ta very much Jo

The best fun is getting your hands inside the cassette
Their videos always have a nice new cut away model...

 

[Boringfrog]

Do you have any pipework in the cassette housing that goes outside the van? Not sure that hole is thetford standard. Could just seal it up?

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[klaatu]

Could the hole be where a SOG was fitted?

 

[pappajohn]

The bit that 'fell out' looks like a bit of perished wine bottle cork to me.
Maybe someone tried bunging up the hole previously.
Can't see any reason for a breather so may be a DIY mod.
If its around 20mm or 25mm diameter try an electrical store for a rubber blanking grommet and fit that in the hole.

 

[TheBig1]

looks exactly like an early sog modification. a tapered fitting with a hose attached would be pushed in there a plastic bung fitted for emptying the cassette. a replacement silicon bung can be bought from a lab sales place on ebay cheaply

 

[TheBig1]

a stainless steel nut and bolt, with 2 large washers and a neoprene seal would be a decent diy fix

 

[pappajohn]

You may be thinking "what the hell is a SOG"

It's an extraction system to remove the smell from the cassette and expel it to the great outdoors via a fan and charcoal filter.
The fan and filter are usually fitted to the cassette compartment door and a flexible and removable hose connects them to the cassette.
It all works automatically when the toilet flap is opened.

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[GJH]

Go to This Page on the Thetord web site and open the PDF Spare Part List.
Scroll down to pages 19/20 and on the exploded diagram it is identified as 18 (venthole), into which part 19 (ventseal - part number 20339) fits.

A Google search for Thetford 20339 brings up several hits. Hopefully there will be one near you to avoid postage charges.

 

[p-c]

Hi

Or just replace with a fresh unused new cassette on wheels with new seat.

https://www.leisureshopdirect.com/w...parts/thetford-toilet-fresh-up-set-for-c2-3-4

Also available elsewhere. Check you get the correct handed one.

Kind regards

p-c

 

[jo10000_6]

Thank you all.

Can't justify the new one - although I have to say there's leisure supplies were helpful when I asked them and also offered a replacement !

Thanks GJH - i will look closer at the exploded page.

I'm good on the SOG toilet, pappajohn. Ideally that would be better for me and I would have thought the SOG toilet was a possible reason but there was a blue chemical bottle in the compartment so discounted it.

Again, thank you.
Jo

 

[jo10000_6]

Just looked at it and this diagram also explains the foam piece that dropped out last week as well ! Thanks GJH. Jo

 

[jo10000_6]

Me again - I'm sorting my Hymer for a weekend jaunt.
I'm coming back to ordering the actual parts as per Thetford diagrams and going to do a temporary fix.
Nuts and bolts sound good but can't source the neoprene seal - any temporary alternatives until I have more time ? Thanks Jo

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[GJH]

Me again - I'm sorting my Hymer for a weekend jaunt.
I'm coming back to ordering the actual parts as per Thetford diagrams and going to do a temporary fix.
Nuts and bolts sound good but can't source the neoprene seal - any temporary alternatives until I have more time ? Thanks Jo

Which part number is that?
If it is 20339 there are several on eBay.

 

[Boringfrog]

Me again - I'm sorting my Hymer for a weekend jaunt.
I'm coming back to ordering the actual parts as per Thetford diagrams and going to do a temporary fix.
Nuts and bolts sound good but can't source the neoprene seal - any temporary alternatives until I have more time ? Thanks Jo

Silicone.

 

[jo10000_6]

Cheers !

 

[TheBig1]

Me again - I'm sorting my Hymer for a weekend jaunt.
I'm coming back to ordering the actual parts as per Thetford diagrams and going to do a temporary fix.
Nuts and bolts sound good but can't source the neoprene seal - any temporary alternatives until I have more time ? Thanks Jo

a piece of bicycle inner tube

 

[jo10000_6]

Ahhh now I get the kind of preferred material. Thanks Jo