Dometic 300 RV Camper Toilet Reseal, Sewage Leaking & Sewer Smell

[@Legalmom0704]

You're the BEST! Just got a 2021 Forest River Wildwood. Only been in it for 5 days, and noticed the problem within 3 days! We did what you showed on your video yesterday....and ALL IS GOOD! It could have been so bad if we waited longer! Thank you!

[@jameshalbardier3550]

We bought our FunFinder 27BH brand new in June 2018, and camped regularly until Texas State Park closures this spring. Since resuming camping in June, we’ve been overwhelmed with a rank old pee smell that surface cleaning can’t remove. We use plenty of water and I’ve used the external spray system to flush out the black tank, but smell returns. After reading several RV forum threads, I’m replacing the Dometic 300 toilet with a Thetford Aqua Magic V RV Toilet Hand Flush - High Profile.

[@susanhansen4253]

Thanks! I was able to fix my gaskets/ seals due to your video. My oval seal was pretty nasty, but after cleaning it as best as I could, my cake decorating skills came in handy on the tube of caulk. The round gasket had actually been twisted! I was lucky to not have had the awful odor, but thanks to your video, it's one less thing I have to worry about.!

[@sarahjimenez8860]

We bought a 2020 camper a couple years ago and started getting this gross odor this year. I called Dometic and because we've had our camper for more than a year, they would only send the replacement seals for the 300 model. Going to do the replacement this week. But, I'm definitely going to caulk those seals in, so we don't have the same issue in a couple of years. Thanks for the video!

[@johnburnside7316]

Dometic won't even talk to their customers about warranty replacement as of September 16, 2020. They pawn you off on their authorized service centers which want nothing to do with you. Absolutely no customer service on Dometic's part. I'll fix mine using the method you showed on this video. Thanks. You're great. Dometic SUCKS!

[@Sshooter444]

If they had any integrity they would have done a product recall.

[@georgek719]

Here's how Dometic warranty service works. Call Dometic. They tell you to go to a dealer. You go to a dealer. The dealer calls Dometic. Dometic says send pictures. You give the dealer pictures and they send them to Dometic. Even though the unit is still under warranty, Dometic says the unit is too old, and there was probably some user abuse. Warranty denied.

[@dougpfm]

I called Dometic today and they are sending me a free replacement.

[@Sshooter444]

Thanks, just did this, hoping it works. Dometic is "closed" for the holidays, hopefully their still sending replacements. Its really disgusting that they didn't do a recall on these.

[@stevesvenson2998]

I have the stink. Pulled it out and stink followed me out of the trailer so I knew it was gonna be bad. THEN I found your video, thank you!

[@jasondegroot9399]

You have outstanding mechanical skills. Great detailed video.

[@65knucklehead]

I followed this video to the “T”. If I could post a pic of what the inside of my toilet looked like 🤢, definitely the problem. Now we have to wait a few months to see if it solves the problem but I’m very confident it has.

[@kendallellington9840]

Has the issue been resolved?

[@65knucklehead]

@@kendallellington9840 YES! No smell. May have to wait until spring to use but we may get one more trip in before winterization.

[@pipslife7874]

Great video!! have a 2018 keystone Bullet 248 RKS. Found this disgusting problem and took the toilet apart and did all you did and more!!! I also talked to Kendra at Dometic and sent in the paper work/documentation and hope they send me a new toilet!! Thanbks again!!

[@mikeresnick6623]

Thanks for the video. Had this stinky issue so followed your steps. It's all back reinstalled now and will be testing it out next weekend.

[@webslingernz]

Watching this video now in 2024. I have a 2018 Rockwood Windjammer with the same Dometic 300. It stinks to high heaven.. and I noticed one of the bolts is loose that holds it to the floor. I've been procrastinating but I HAVE to have a go at removing it, taking it apart and cleaning the shit out of it (excluse the pun) and siliconing the crap out of all the gaskets. Fingers crossed. But I DO HEAR that you can ask for a replacement 310 dometic since the 300 was effectively a recall.

[@jackwright7405]

Bingo! My unit is a 300 series but the bottom bowl base was glued at the area where it’s clipped. And mine only has two screws securing not five. Solved the problem. I did use silicone on both sides of the o-ring and gasket. Thanks.

[@sherifx5122]

I wish I would have found this video before I removed and tilted my toilet inside the camper....🤢. I figured it was just the seal on the floor and then made the same discovery as here on the video. I fumbled through and did the exact same things sealing the same places stressing that I was either fixing it on making it worse, glad to see that I hopefully fixed it.

[@charlym.1494]

Thank you for the video. Heaven forbid that a 2018 model-year anything hold up or be properly assembled with appropriate grease. Wish Toyota made a travel trailer....

[@RideRocks801]

Year later and having the same issue. Sham on them for not fixing this known issue!!! If it can be resolved, the manufacture should have resolved or redesigned it!!!

[@lindagardner1257]

Same issue with 300. Glad some showed how to fix. Thanks

[@mariaesch572]

Thank you for this video. My husband and I own a 2108 Keystone Bullet since June 2018 and just this past weekend discovered the horrid smell upon return. We have boys and trust me I'm used to bad odors, but THIS, this was death!! We followed your detailed video and were horrified at what we found!! Dometic won't deal with us. They are sending a repair kit to a local rv dealer by us. We weren't able to bring our RV in because we couldn't get an appt until the end of November. We can't even upgrade the toilet to any other model due to the measurements. So basically, we are stuck with this model. For those that did the repair...did you wait for the silicone to dry before putting the toilet back together or did you just put it back immediately after using the silicone? Also, should we wait 24 hours before giving it a trial run? Thank you! Praying this really fixes the problem - I really enjoy our indoor / private toilet!!

[@bobmcgraw1547]

In place of a screwdriver use a 5/16" socket to remove the 4 screws. These are 2" x #12 or #10 sheet metal screws.

[@jeigenseher]

The O-ring is what failed on ours. that O-ring became dislodged and was poking out into the drain hole. I thought about doin this repair, and it probably works fine, but decided I didn't want to ever have this happen again, so we just upgraded to the 310.

[@pymslanterncave7137]

Well.....I just found your video and off to the hardware store I went.....inside was full of you know what....and to think I have been blaming my son for missing the toilet, I guess we will have to see together how the repair works...I also added a line of silicone right above the black ring on the inside of the toilet,,there is a small gap there...I just ran my finger around and filled it in.....I will report back as well......

[@Sshooter444]

Dometic should pay me for all the yelling Ive done at my 12 year old for missing the bowl

[@hapypapy781]

Great video. But why didn't you get new gaskets than silicone

[@brownsrvlifecampground9322]

I'm thinking about purchasing a Dometic 300 Series Standard Height Toilet but I am hearing that they leak a lot brand new, now I am nervous about buying one

[@RandomStuffGarage619]

DONT!!! I had Thetford in 2 previous trailers they are incredible. This dometic is JUNK!!!!!

[@nickacarroll]

Thanks for posting. You helped me fix my Dometic 300 right before we left.

[@mariaesch572]

Question: did you wait for silicone to dry or did you immediately put it all back together? Did you wait 24 hrs before actually running water? Thanks.

[@kevinj8258]

@@mariaesch572 think he immediately put it all together. It’s like working on car engine gaskets. You put a sealing bead of RTv gasket sealer on the existing surface to seal it better.

[@susanhansen4253]

Hoping I can pull this off, found a leak at the base near the floor... might as well seal the whole thing as long as I'm at it.

[@lorenzaneal2650]

Great job, thanks for the help. I have a 2019 Wildwood and Dometic wouldn't help us. They "stink"!!!!!

[@Tennessee512]

Thx for the video for I jus purchased one n will most certainly reseal before I change them out...

[@pJarhead64]

Did this actually fix the problem?

[@APDTY]

This fixed our problem.

[@MrGberruex]

I bought a dometic toilet, within a few months the flush system failed, shortly after that the spout on the cassette fell off and went down the sewage dump point. The slide on the toilet is always very stiff and I'm worried it's going to snap, ill be in trouble if that happens, Always trying to lubricate the mechanism but it doesn't help, won't be able to use it, having enough trouble repairing the issues now. Contacted dometic and they didn't seem to give a dam about the problems. Looks like i may have to throw this $700 one out and buy a decent toilet.

[@dad2girls603]

Are you using silicone chaulk or grease? I've seen few videos recommending grease. I'm doing my rv toilet this weekend.. thanks in advance

[@Davidjb37721]

Good job

[@67DanDangerous]

Life saver!!!! Thank you.

[@patriciaalexander3903]

Thanks helped us so much

[@AnnFranz]

Can this be fixed without taking the whole toilet out?

[@RELOADINGandSHOOTING]

How did you removed the toilet from the travel trailer?

[@Sshooter444]

Unscrew the bolts where it attached to the floor. There are two.

[@RandomStuffGarage619]

@@Sshooter444 can't get ANY wrenches or sockets back there, it's in a corner no room to turn a wrench, bolts too tall to fit deep socket under flusher arm. About to remove this thing with a crowbar and aluminum bat. NEVER AGAIN. Thetford or nothing.

[@jacquesbolduc1070]

Nice Work 😎

[@idsullymichaels]

How do I know if this is my model? The sticker says rv 169098 then iapmo ts 1-2011e1. Smells aren't horrid, but noticed. And we've only had it for 4 trips.

[@Salerno1947]

Looks like that is what is needed in ours! Not sure how to remove it from the trailer...

[@Sshooter444]

Two bolts hold it to the floor.

[@matthewodom1957]

Goes without saying. Turn the water off first. 😳

[@RandomStuffGarage619]

I have no room to fit any wrenches or sockets back there. About to remove this trash with a baseball bat.

[@matthewodom1957]

@@RandomStuffGarage619 plenty of room

[@RandomStuffGarage619]

@@matthewodom1957 maybe in yours, mine is in a corner and I literally have no room to fit anything on there.

[@bhurd2008]

This is exactly what I am getting ready to do. Did it fix the issue? It's next to impossible to find a replacement toilet and Dometic recently stopped replacing them for free.

[@APDTY]

Toilet is installed in the RV right now, and will test it next week when it will be used on vacation. Will update you with the results.

[@APDTY]

The customer reported back that the toilet works perfectly fine now.

[@daverocca1274]

@@APDTY ITS BEN A YEAR IS THIS FIX STILL HOLDING STRONG?

[@dontennison9743]

Nice job on the video

[@georgek719]

The toilet empties into the holding tank via gravity and a direct chute. I don't understand how you could get flow around and by that rectangular seal, unless you let the holding tank completely fill up. And that would certainly explain an odor problem!

[@kevinj8258]

Think This is why the model changed from the 300 series to the 500 series. Because the old design was failing and causing horrible smells.

[@dannyflores7667]

How long did this last?

[@Tennessee512]

I forgot to ask which silicone did u use?

[@kevinj8258]

Think he is using a silicone sealant caulking bead. So when it dries it’s a permanent adhesive.

[@billmellinger1134]

Best thing to do is buy a Thetford toilet to replace this one.

[@RandomStuffGarage619]

Yup. I had 2 trailers both 2014 wildwood with Thetford and ZERO issues. Got a class c now 2014 coachman and this dometic is JUNK. The trap door is crooked so I can't make a water seal to keep out the smell from the tank. Last trip was 4 days full hookups but smelled the site tanks for ALL 4 DAYS. done. This is getting ripped out and trashed. Absolute JUNK.

[@dannyallen9804]

Did it last?

[@APDTY]

Yes, the customer just got back from a vacation and they said it was working perfectly.

[@davidcooper3871]

99% sure this is my issue. Strong urine smell, leaking urine water between base and ceramic bowl. Waiting on oblong gasket now…

[@cowdough94]

dude, Flagstaff RVs, mine anyway, is the BIGGEST piece of shit. it's a joke and a waste of money

[@nateirons7381]

dometic is a piece of shit company , when you replace your floor use a different brand toilet

[@avenged06x]

Just spoke with Dometic, if you have this issue this is what you need to do and it will save you even calling them which is a very long wait. You will email [e-mail] Provide them a picture of the Serial Plate Tag Bill of Sale of your camper (2 year warranty on the toilet) Full Name and Address (PO Box will not work) UPS is the shipper Color of the toilet either Bone or White Provide the description of the issue you are having with the unit. Which is probably why you're here already. Enjoy your new free toilet.

[@avenged06x]

5/20/2021

[@avenged06x]

Follow up to this. Will not work. Donetic will not stand by their products.