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Toilet leak

jdb_5
Explorer
Explorer
I have a Tiffin 2018 Allegro Bus 40 AP with a Dometic Concerta 4100 series toilet. The bowl no longer holds water; was in Red Bay, AL and had the seal replaced, then re-adjusted number of times. Still the bowl won't hold water, flushes ok, just won't hold water. Short of replacing the toilet (only 5 years?) any suggestions as to what else to try?

John
4 REPLIES 4

JKJavelin
Explorer III
Explorer III
LOL!
I just applied some plumber's grease to mine (Thetford) for the same reason, and sat down to look at the forum and here's a thread about the same thing. Yes, it works for me for a good month. But it only takes 30 seconds. Good luck!
JK
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RickCamping
Explorer
Explorer
I could not find that exact model online, but I assume there is some sort of valve that slides against a rubber seal?
If so then perhaps applying some plumbers grease (silicone grease) to the rubber seal will fix the problem.
My toilet has a plastic ball seal that rubs against a rubber seal and will occasionally leak. I just clean off the rubber area and apply a thin coating of the silicone grease and it usually works for quite a while before needing a new application of grease.

jdb_5
Explorer
Explorer
thanks 2oldman

2oldman
Explorer II
Explorer II
I can't find that model toilet, but, assuming the seal is round and fits over a sliding flap, try pushing down on it all around its circumference - but not hard enough to remove it.

I stumbled on this fix when trying to replace my seal. I pushed pretty hard but it would not come out, but, voila, now my toilet holds water.
"If I'm wearing long pants, I'm too far north" - 2oldman