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Old 10-17-2021, 02:22 PM   #521
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Update

Just returned from another trip and 300 fix still holding strong with no issues.
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Old 10-28-2021, 08:48 AM   #522
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I just called Dometic about this issue. I bought my camper in May 2020. They said there has been a recall on the 300 and the issue has been fixed. They will send a new 300 for free or I can pay $75 to upgrade to the 310. Which should I do?
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Old 10-28-2021, 09:31 AM   #523
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We upgraded, the 310 is so much nicer
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Old 10-28-2021, 03:39 PM   #524
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We upgraded, the 310 is so much nicer
I just measured and unfortunately the 310 won't fit. I've only got about 9 1/4" from the center of the bolts to the wall behind the toilet.
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Old 10-28-2021, 04:15 PM   #525
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I think the 310 has the same footprint as the 300. The 320 is different. I could be wrong. You might confirm with FR.
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Old 02-20-2022, 08:52 PM   #526
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Wildwood FSX 179DBK Dometic 310 potential?

Hey all. I have a 2019 Wildwood FSX 179DBK with a dometic 300 toilet that is once again, collecting raw sewage in the bowl die to the leaky gasket that I thought I had fixed. I am trying to see if anyone has done the 310 upgrade in specifically the 179DBK? I’ve heard that I might have to turn the toilet sideways to make it fit but wanted to know for sure. Also, if I did that, would I just need to drill new holes through the floor for the 90 degree rotation of the toilet? The original holes to fix the toilet to the floor wouldn’t be where I’d need them. Any help would be greatly appreciated.
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Old 02-20-2022, 09:00 PM   #527
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Hey all. I have a 2019 Wildwood FSX 179DBK with a dometic 300 toilet that is once again, collecting raw sewage in the bowl die to the leaky gasket that I thought I had fixed. I am trying to see if anyone has done the 310 upgrade in specifically the 179DBK? I’ve heard that I might have to turn the toilet sideways to make it fit but wanted to know for sure. Also, if I did that, would I just need to drill new holes through the floor for the 90 degree rotation of the toilet? The original holes to fix the toilet to the floor wouldn’t be where I’d need them. Any help would be greatly appreciated.
I don't have that model, but if you have 1/4 to 1/2 inch of clearance to the back wall then it will fit. My Shamrock had that clearance and it took all of 20 minutes to install a 310 in place of the 300 model

Order from Amazon and if you cannot make it fit you can return it.
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Old 02-20-2022, 09:34 PM   #528
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I don't have that model, but if you have 1/4 to 1/2 inch of clearance to the back wall then it will fit. My Shamrock had that clearance and it took all of 20 minutes to install a 310 in place of the 300 model

Order from Amazon and if you cannot make it fit you can return it.
Looking at my
Current set up, the hinge at the back of the toilet has somewhere between 1/4-1/2 inch gap.
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Old 02-20-2022, 10:13 PM   #529
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Looking at my
Current set up, the hinge at the back of the toilet has somewhere between 1/4-1/2 inch gap.
I want to clarify, I do not have your same trailer model.
Going from memory here...
The specs on the 310 toilet showed it was about 1 inch longer then the 300.

I had less than 1/2 inch back wall clearance. I found there was a little wiggle room on the flange that you bolt to on the floor.

My 310 went in without a hitch with no help.

I tried searching for my write-up about my install for specifics but I cannot find it.... from about AP or May of last year.

I used I think a 7/16 ratchet wrench which made taking the bowl off then on again rather simple. The water hose connection was not a problem either. When you pull the bowl off the drain have a rag prepared to stuff into the hole to keep fumes out of your face.

I hate plumbing but this was a lot easier then I had anticipated... swapping the 310 for the 300 Dometic.
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Old 03-20-2022, 09:11 PM   #530
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Stinky toilet

I too have a bad toilet, and i called end of December 2021. They said they would have a new toilet to me by end of Jan. No toilet end of Jan. Called again end of Jan, and they said end of Feb. No toilet. I called again last week, and they said end of April. Can anyone help me on what I can say to get a new toilet?
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Old 03-20-2022, 09:28 PM   #531
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You can repair until your new one comes. Pretty straightforward. Took me about 15 min. Here are several videos.

https://www.google.com/search?q=dome...&bih=619&dpr=3
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I too have a bad toilet, and i called end of December 2021. They said they would have a new toilet to me by end of Jan. No toilet end of Jan. Called again end of Jan, and they said end of Feb. No toilet. I called again last week, and they said end of April. Can anyone help me on what I can say to get a new toilet?
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Old 03-20-2022, 11:43 PM   #532
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Ask your local dealer to assist you. They might have one available and probably all they have to do is to call Dometic CS to process warranty.
If that doesn't work, call CS again and perhaps you can opt to buy an upgraded model for $75 or something thru a dealership. You need to provide the model # and serial # of your defective toilet. The sticker is behind the unit. Take a picture.
They don't want the old toilet back. You just have to bite the bullet and buy a new toilet so that you can start enjoying your motor home or tt again instead of waiting. Hoping the upgraded model would fit in your bathroom.
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Old 06-11-2022, 08:12 AM   #533
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I posted in an older thread but then ran across this one so I am not trying to spam threads but thought I would jump on this one as it is a 'sticky'. We just had the Dometic 300 issue occur with our toilet that was manufactured in 2019. I was in the process of 'fixing' the old one with caulk but Dometic sent me a new 300. My question is have they really fixed the issue or have people experienced the problem with newer 300 toilets as well.
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Old 06-11-2022, 06:04 PM   #534
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I posted in an older thread but then ran across this one so I am not trying to spam threads but thought I would jump on this one as it is a 'sticky'. We just had the Dometic 300 issue occur with our toilet that was manufactured in 2019. I was in the process of 'fixing' the old one with caulk but Dometic sent me a new 300. My question is have they really fixed the issue or have people experienced the problem with newer 300 toilets as well.
It's not fixed, to my knowledge. Consider preemptively sealing the joint with a good silicone-type adhesive, if the design permits.

Alternatively, buy a new 310 or 320, instead. Measure carefully before you do. They're not exactly the same size. If you buy a new one, get the version that has an integrated sprayer.
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Old 06-12-2022, 07:55 AM   #535
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My intent on the original 300 was to use silicon caulk around all of the gaskets. Is there something better that I should use?
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Old 06-12-2022, 01:42 PM   #536
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My intent on the original 300 was to use silicon caulk around all of the gaskets. Is there something better that I should use?
Don't use any caulk around the gasket you can see from inside the toilet, with the valve closed. You'll need to remove that for cleaning periodically, as solid matter gets stuck between it and the slide valve, causing the bowl to lose water continuously. It's easy to remove and replace.

The joint between the upper and lower halves of the toilet is what I'd focus my efforts on.
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Old 06-12-2022, 07:51 PM   #537
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Don't use any caulk around the gasket you can see from inside the toilet, with the valve closed. You'll need to remove that for cleaning periodically, as solid matter gets stuck between it and the slide valve, causing the bowl to lose water continuously. It's easy to remove and replace.

The joint between the upper and lower halves of the toilet is what I'd focus my efforts on.
Good point on not caulking the valve gasket. I see that you can pull that out without disassembling the toilet and this is probably not the fail point anyways. I believe my issue came from the single round o ring that seals that tube that goes to the waste tank. It must have seeped around that O ring and into the cavity of the toilet.
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Old 06-12-2022, 09:17 PM   #538
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Good point on not caulking the valve gasket. I see that you can pull that out without disassembling the toilet and this is probably not the fail point anyways. I believe my issue came from the single round o ring that seals that tube that goes to the waste tank. It must have seeped around that O ring and into the cavity of the toilet.
Best $175 I’ve spent on my camper was working with dometic and having them send me the full ceramic full sized toilet when this happened to me. Save yourself the grief.
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Old 06-12-2022, 09:47 PM   #539
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Best $175 I’ve spent on my camper was working with dometic and having them send me the full ceramic full sized toilet when this happened to me. Save yourself the grief.
Not all trailers have the clearance to fit the 320.
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Old 06-13-2022, 04:33 PM   #540
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My intent on the original 300 was to use silicon caulk around all of the gaskets. Is there something better that I should use?
Use Lexel on the gasket where the top and bottom pieces connect. I had posted pics earlier in thread.
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