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Subject Topic: Thetford c4 cassette Post Reply Post New Topic
08/8/2016 at 3:46pm
 Location: None Entered
 Outfit: Sterling Europa 600
View Haich's Profile View Profile   Reply to Haich Reply   Quote Haich Quote  
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Hi all have just gone to empty my cassette and noticed fluid coming out of the vent hole near the blade opener also the float vent has come off which was in the tank

any ideas ?


08/8/2016 at 3:52pm
 Location: Lichfield
 Outfit: Coachman Amara 450
View tango55's Profile View Profile   Reply to tango55 Reply   Quote tango55 Quote  
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The vent is replaceable which is Thetford part number 23722 and fits the C2, C3 C4 and C200 models. It turns about a quarter of a turn then comes out.


08/8/2016 at 3:56pm
 Location: None Entered
 Outfit: Sterling Europa 600
View Haich's Profile View Profile   Reply to Haich Reply   Quote Haich Quote  
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Thanks but how do I replace as I can't get my hands in there . Is it a case of unscrewing the screws around the lip seal removing and fitting and replacing lip seal?


08/8/2016 at 5:33pm
 Location: Staithes
 Outfit: Vantage Neo
View Wendyhouse's Profile View Profile   Reply to Wendyhouse Reply   Quote Wendyhouse Quote  
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Try this YouTube vid. See at 3 mins
https://youtu.be/dAlFMJMlCDE


08/8/2016 at 7:43pm
 Location: Lichfield
 Outfit: Coachman Amara 450
View tango55's Profile View Profile   Reply to tango55 Reply   Quote tango55 Quote  
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When you said 'float vent' I didn't know what you meant. Do you mean the float itself has dislodged from it's mounting?
If so then it is difficult to fit back into position because once you have removed the 6 screws around the lip seal plate you still can't see inside and have to feel with your hands which is virtually impossible. Even after looking at pictures I still couldn't detect where the swivel pin fitted. However, you don't need the float really as you can visually see when the tank is near full as this happened to mine about 3 years ago so just left it absent because a new Thetford cassette tank complete with float arm is the best part of a hundred quid in order to make it fully functional again.


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08/8/2016 at 7:49pm
 Location: None Entered
 Outfit: Sterling Europa 600
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Further research shows that the hole to vent as you empty the button has gone hence the leak so not sure whether I can get a new one or if it's knackered


08/8/2016 at 8:05pm
 Location: Lichfield
 Outfit: Coachman Amara 450
View tango55's Profile View Profile   Reply to tango55 Reply   Quote tango55 Quote  
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I'm a bit confused as to which vent has actually gone as when you said the vent hole I presumed you meant This as this is the Thetford part number I provided in my earlier link which isn't the part you are referring to. However, the small air vent button (for assistance on emptying) is not replaceable so it seems like it will have to be a new cassette tank unfortunately.



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