Thetford casette C3 help needed!

Discussion in 'Tech/Mech General' started by Dave and Ginny, Apr 22, 2015.

  1. Dave and Ginny

    Dave and Ginny Funster

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    No flush this morning on Thetford C3. Checked fuse and ok but closer look can see small brown wire hanging down from below the flushing valve assembly. May be off microswitch or something.

    It's impossible to work on in situe so does anyone know how it may come off for access? From the top of the valve with the little centre plug removed I can see a screw way deep down but would need to source a long screwdriver from fellow camper if it needs to come out.

    Any help gratefully appreciated as always. Dave
     
  2. Neckender

    Neckender Funster

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  3. Daifuse

    Daifuse

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    My old Autotrail had a similar problem. A microswitch prevented the flush pump operating if the cassette was not seated properly. The switch failed and was extremely difficult to get at. Being on a long trip at the time meant that a temporary repair was needed so I located the wires to the switch (of which yours is obviously one) and shorted them out. It was a temporary repair that became permanent - I never bothered to replace the switch - just made sure the cassette was always seated properly!
     
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  4. Dave and Ginny

    Dave and Ginny Funster

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    Spot on...mine has turned out to be exact same problem. I managed to do a temporary repair also, the problem is that the particular bit, designed to be a safety feature, is constantly turning and causing early fatigue on the tiny wires.

    A couple of pics might help anyone else with same. The offending piece is removed by single self tapper. Second pic shows my bodge...I mean 'temporary' repair ;)
     

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    Last edited: Apr 22, 2015
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