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Old 09-29-2020, 11:26 AM   #1
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Toilet leak fresh water when flushed

Hi,
I have a Thetford 31105 (Bravera I think) S/N 0032 per the build sheet on my Monaco Monarch 2002 coach. I recently replaced all the wear parts - valve, blade seal, all hoses, and attempted to reseal the joint where the top meets the side wall of the toilet as the foam seal there was falling apart. I am now 1100 miles from home (of course) and have a fresh water leak when the toilet is flushed. I have not been able to pinpoint the exact source, but the flush valve is dry to the touch so likely at a hose or the top seal.

I would appreciate any input regarding locations to check? I also replaced the toilet flange on the floor in the coach as only of the mounts was cracked and that seal at the base is new as well. I was not expecting this with all new parts other than the shell...


Any help or pointer would be appreciated. I would replace the complete toilet except I doubt I can find one near Moses Lake WA where we are for the next week... Thanks for any help or advice!


Doug
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Old 09-29-2020, 12:31 PM   #2
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Doug --

In my previous coach I had a "foot flush" Thetford Toilet that had water leaks on two different occaisions. The first leak was from a small crack in the body of the water valve. The repair was installing a new water valve. That toilet also had a spray attachment. My second leak was due to the spray head assembly not fully turning off and had to be replaced. For both repairs I had to purchase replacement parts from Camping World.

I suggest checking these items for your coach. Also check tubing attached to your toilet's water valve to see if after 18 year the tubing is hard / dry/ cracked which could also leak.

Hope this info is useful!
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Old 09-30-2020, 09:01 AM   #3
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Different model toilet but mine has a plastic vacuum breaker in the water line behind the toilet. I have had to replace it twice. If cracked, it leaks only when flushing.
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Old 10-01-2020, 09:09 PM   #4
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I have also had the vacuum break at the rear of the toiled start to leak, don't remember the model of toilet, but if you have a vacuum break check it.
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Old 10-02-2020, 11:48 AM   #5
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I believe the leak is coming from the seal at inside top of toilet on the water channel that runs around the top. The seal was bad when I pulled it apart and I rigged a new seal. When I partially close the supply valve to reduce the flow, no leaks. New toilet when I get home as I am not going to experiment further...
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