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Thetford Cassette C4 wont flush

P

Patrick_374311665

I have a cassette C4 toilet in my camper and it won't flush. I have taken apart the flusher and the bladder filled with fluid, but I can't expel the fluid into the bowl. As hard as I push on the bladder it won't move. Is there a pressure valve or something that can help me push the fluid out of the bladder and into the bowl? Any suggestions would be helpful.
 
Patrick, the only valve is at the bottom of the flush module.

In your case, if the bellows is full of water, the flush tube must be blocked by something.

It is a push fit, so suggest removing it and making sure it is clear.

If needed, a new tube is obtainable.
 
Damian, thanks for your response. Is the flush tube the one that has it's end at the top of the bowl? I thought of the possibility of this being blocked, but I can't figure out how to get it apart to check for a blockage. What do you mean by a push fit? Do I have to pull out that end in the bowl to get to the tube? It is a pretty enclosed system.
 
Patrick, after you have removed the pump operating knob fom the top of the pump, the pump body lifts up out of its receptacle, and the flush tube enters the top of the bowl, which you should be able to see.

Pull the tube downwards to release itfrom the bowl then pull off from the pump fitting.

replace in reverse order.
 
Patrick, after you have removed the pump operating knob fom the top of the pump, the pump body lifts up out of its receptacle, and the flush tube enters the top of the bowl, which you should be able to see.

Pull the tube downwards to release itfrom the bowl then pull off from the pump fitting.

replace in reverse order.
Click to expand...
Damian, when you say "pump operating knob" are you refering to the knob you turn to flush the toilet? And when you say "pump body" are you refering to the bellows that is currently full of fluid?
 
Damian, when you say "pump operating knob" are you refering to the knob you turn to flush the toilet? And when you say "pump body" are you refering to the bellows that is currently full of fluid?
 
Patrick, go here, http://www.thetford-europe.com/, go to English, then User Information, Repair Instructions, Built in Toilets, C2 C3 C4, scrolldown to C4 Flush Knob, all the info there
 
Patrick, go here, http://www.thetford-europe.com/, go to English, then User Information, Repair Instructions, Built in Toilets, C2 C3 C4, scrolldown to C4 Flush Knob, all the info there
Click to expand...
Damian, I was searching for a repair instruction site and couldn't find one. I got everything I need now. Thanks for your help.
 
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