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scout dad

okc

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Posted: 04/14/21 12:28pm Link  |  Quote  |  Print  |  Notify Moderator

Hello, I am looking at replacing or repairing my thetford toilet, believe the water valve is leaking some saw water down the fill line felt underneath of lip felt damp. For those who have replaced these before is a big deal or just easier to buy new one? Couple of things I am not looking to upgrade as i don't know how planning on keeping rig? 2. MY toilet is a out of a 2006 rig a Aqua Magic V hand flush high rise.
Been told by local dealer that covid has put a strain on this in stock so I can go to foot flush , guess what I needed to know is can I use a flex supply line like you get at HD or Lowe's you use to hook up one at home? The line is set up for one got now would have to change most likely . Any tips would be helpful
Thanks

Gdetrailer

PA

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Posted: 04/14/21 12:51pm Link  |  Quote  |  Print  |  Notify Moderator

If you are confident that the leak is due to the valve, I would recommend changing the valve, they are much cheaper than a new toilet.

Fill valve should be on the back of the toilet so as long as you can get in there it should be fairly easy to change without removing toilet.. Otherwise if toilet is too close to wall you will have to remove toilet to change the valve.. I have managed to replace a valve on an older model once that was in a worse place without removing toilet. Wasn't easy but I did get it done.

Kit does include replacement seal, use it if you lift the toilet, do not reuse the old seal as it may not reseal.

See HERE for parts break down.

Looks like Thetford 31705 Aqua-Magic V Toilet Water Module Assembly would be the valve.

Found water valve HERE for $35

Found valve replacement instructions HERE

I would recommend adding a braided stainless steel flexible water line to connect the fill valve. Gets rid of any tension that may be present from the stiffer PEX line.. The ones at Home Depot and Lowes will work fine, you need to find one that is 1/2" to 1/2" connections.

2oldman

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Posted: 04/14/21 01:40pm Link  |  Quote  |  Print  |  Notify Moderator

I'd just change the whole toilet. It's probably gross anyway! Just be sure to thoroughly flush the tank first!!!

Dutch_12078

Winters south, summers north

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Posted: 04/14/21 02:23pm Link  |  Quote  |  Print  |  Notify Moderator

Even if the valve is difficult to access with the toilet in place, removing it is not difficult. It's only held in place by two nuts. Disconnect the water line of course. It wouldn't hurt to have a new rubber base gasket on hand in that case, but it may not be needed for a simple remove/replace.


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ScottG

Bothell Wa.

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Posted: 04/14/21 02:36pm Link  |  Quote  |  Print  |  Notify Moderator

Are you sure the fitting isn't just loose?

HappyKayakers

Somewhere in the USA

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Posted: 04/14/21 02:59pm Link  |  Quote  |  Print  |  Notify Moderator

If you have to replace a seal, I highly recommend using plumbers grease on it.


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Gjac

Milford, CT

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Posted: 04/14/21 04:55pm Link  |  Quote  |  Print  |  Notify Moderator

I replaced mine twice without removing the toilet. They are prone to leak.

scout dad

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Posted: 04/14/21 05:25pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks for the help, my model # 31683 forgot to mention that that's why I don't know if they still make that valve or just changed #? From what I can tell it is seeping from top and running down straight line, I checked fittings it is coming from above. Seemed like it did this once last summer but it stopped.

mobeewan

Hampton, Va

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Posted: 04/14/21 06:05pm Link  |  Quote  |  Print  |  Notify Moderator

Easy to replace. The valve fits into a slot on the back of the toilet. When you order the valve you get a neoprene donut used when bolting the toilet to the floor. My toilet was mounted too close to the wall for the valve to completely slide out, so i had to unbolt the toilet from the flange to finish removing the valve. I needed the donut when remounting the toilet.

To remove the valve reqiures disconnecting the supply line and the tubing to the toilet rim, removing one screw and disconnecting the flush lever rod.

This video is not mine but shows the installation of the new valve.

Video

Desert Captain

Payson

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Posted: 04/15/21 09:25am Link  |  Quote  |  Print  |  Notify Moderator

If you find yourself needing to do repairs to an RV toilet it will be far easier if you simply remove the entire unit. This will give unlimited access vs the try and work by braille method. To that end utilize a 7/16" deep socket to simplify removal of the two nuts/bolts that secure the toilet to the floor.

Most but probably not all toilets are 7/16" so check yours. Some are easier to access than others, mine is a PITA but turning those nuts with an open end wrench, about a sixteenth of a turn at a time, is a very aggravating time consuming exercise.

You're welcome.

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