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Old 12-06-2015, 08:10 PM   #1
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toilet running


Hi,

I have a toilet that won't stop running. It has what appears to be a Mansfield Flush Valve and a Plumb Works Adjustable Anti-Siphon Ballcock, at least those are the parts at the hardware store that seem to be replacements for what I have.

Here are a couple links:
https://www.menards.com/main/toilet-...49053462058797
https://www.menards.com/main/p-14444...35127342877945

I have replaced the red gasket on the mansfield flush valve as well as the black gasket on the ballcock. There is also a black gasket on the flush valve. I wasn't able to replace this gasket. I couldn't get the toilet tank off of the toilet. I had initially intended to replace the entire flush valve, but I decided to just replace the red gasket, the flush valve seat kit this part:

https://www.menards.com/main/p-14444...27618625050308

The toilet continues to run. After a couple minutes, the ball float will dip as the water level dips, and it will fill again.

The water level never rises above the top of the flush valve.

Any ideas?
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Old 12-06-2015, 08:28 PM   #2
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start by replacing red seal gasket on flush valve.
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Old 12-06-2015, 08:52 PM   #3
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Quote:
Originally Posted by ben's plumbing View Post
start by replacing red seal gasket on flush valve.
Again? I replaced it once, should I do it again?
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Old 12-07-2015, 06:38 PM   #4
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Replace the entire flush valve. Turn the water off soak up all that is in the tank cut the tank bolts off buy new ones. While your at it replace the fill valve. Buy Genuine Mansfield parts and make sure you do not install a 1.6 gallon flush valve on a 3 gallon flush toilet.

https://www.plumbingsupply.com/mansf...ml#flapperless
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Old 12-07-2015, 07:01 PM   #5
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Quote:
Originally Posted by Ghostmaker View Post
Replace the entire flush valve. Turn the water off soak up all that is in the tank cut the tank bolts off buy new ones. While your at it replace the fill valve. Buy Genuine Mansfield parts and make sure you do not install a 1.6 gallon flush valve on a 3 gallon flush toilet.

https://www.plumbingsupply.com/mansf...ml#flapperless
Can I use a dremel for cutting the bolts? I will have to cut them right up at the base of the toilet through the nuts.
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Old 12-07-2015, 08:23 PM   #6
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Just use a mini hack easy to cut 100% brass.
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Old 12-07-2015, 08:27 PM   #7
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I have been reading about this some more, and the gasket that was originally on my toilet wasn't red, it was grey. I think it was a bit larger. I am wondering if I have a mansfield 208/209 or a 210/211.
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Old 12-07-2015, 09:25 PM   #8
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I am pretty sure I was able to fix it. When I first started it seems that the gasket, which may have been red at some point, was damaged. I replaced it, but didn't seat it correctly. There are 2 rings and the gasket should fit into the top one. I was able to see what I did wrong looking at the part I purchased but didn't install.

They discuss this in this video:

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Old 12-07-2015, 09:39 PM   #9
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Good way to test it is some food dye. Dump it into the tank go watch tv. None should be in the bowel after the show.
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Old 12-08-2015, 12:02 AM   #10
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Quote:
Originally Posted by Ghostmaker View Post
Good way to test it is some food dye. Dump it into the tank go watch tv. None should be in the bowel after the show.
So the obvious problem was fixed, but I did fail this test. How bad is that?

I'm assuming I'd have to replace my whole mansfield flush valve, which would mean cutting the bolts for the tank.
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Old 12-08-2015, 03:08 PM   #11
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That means it is still leaking.
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