Accessing the Thetford C2 Cassette Toilet Wiring Loom

CarolynCo

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Our Thetford C2 Cassette Toilet stopped flushing during our recent outing to France. I have checked the fuse which is fine. Using a jumper lead I was able to check that the pump is also working okay.

Into a deeper inspection and I noticed a brown cable which has either come away from its mounting or might be an unused spare? You can see it in the attached photo 'Thetford Cassette Wiring'. As far as I can see the fuse and the microswitch both have two cables attached, hence my uncertainty if this unconnected brown cable is a spare.

Either way I need to get the wiring harness out and this is where I got stuck and need advice. The wiring harness, switches and fuse are mounted on a grey plastic moulding which the service guide describes as a 'mechanism'.

According to the Thetford Service guide I need to remove the screw which hides under the flush knob (very long screw driver but that's done). Then remove the two way white connector which is sited next to the fuse (done that).

Then it says 'from within the toilet remove the four screws from the mechanism'. I've attached an image from the service guide. If these are the screws which are within the cassette cavity then it is impossible to reach far enough into the cassette cavity to get to two of them with a screwdriver. I only have access to the cassette cavity from the outside van access panel.

If anyone has experience of doing this job, could you advise how best to proceed.

Thanks

Thetford Cassette Wiring.JPGThetford Mechanism Screws.jpg
 
Okay I got the grey plastic moulding which holds the fuse, microswitch and wiring removed from the underneath of the toilet. Quite a stretch! There is a broken brown wire which I should be able to replace. Sadly one of the screws (holding the grey moulding) fell into a void right at the back of the cassette cubicle and I can't get it out. Does anyone have a spare screw or can they tell me where I can buy a few?

screw.JPG
 
Hi TJBi - yes, thanks for the suggestion. we have tried a magnet on the remaining 3 screws and they are non-ferrous! They seem to be an unusual specification. Cheers
 
Given the area concerned, it did cross my mind that it might be stainless steel.
 
Hi TJBi - yes, thanks for the suggestion. we have tried a magnet on the remaining 3 screws and they are non-ferrous! They seem to be an unusual specification. Cheers
I usually find a blob of blue tack on the end of a screwdriver gets non magnetic screws out of their hidey holes
 

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