Rpod 178 Black Water Tank

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   I bought a used Rpod 178 a I am an issue. The Black water tank fills up way to quickly. Yes, I did have enough water in it along with a treatment. After cleaning it out and looking down thru the toilet opening I see something directly under the toilet. Its about 8" wide and rectangular in shape. Does anyone know what this is? I did a search and the toilet is a Thetford model 31647. I originally thought that piece was part of the toilet but it isn't, I'm guessing it is part of the black water tank.

Any ideas?

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coltonk Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 09 Jun 2026 Online Status: Offline Posts: 3	Post Options Post Reply Quote coltonk Report Post Quote Reply Topic: Rpod 178 Black Water Tank Posted: 09 Jun 2026 at 4:27pm
	I bought a used Rpod 178 a I am an issue. The Black water tank fills up way to quickly. Yes, I did have enough water in it along with a treatment. After cleaning it out and looking down thru the toilet opening I see something directly under the toilet. Its about 8" wide and rectangular in shape. Does anyone know what this is? I did a search and the toilet is a Thetford model 31647. I originally thought that piece was part of the toilet but it isn't, I'm guessing it is part of the black water tank. Any ideas?

GlueGuy Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 15 May 2017 Location: N. California Online Status: Offline Posts: 2780	Post Options Post Reply Quote GlueGuy Report Post Quote Reply Posted: 10 Jun 2026 at 4:12pm
	Got a picture?
	bp 2017 R-Pod 179 Hood River 2015 Ford F150 SuperCrew 4WD 3.5L Ecoboost

coltonk Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 09 Jun 2026 Online Status: Offline Posts: 3	Post Options Post Reply Quote coltonk Report Post Quote Reply Posted: 10 Jun 2026 at 6:21pm
	I have no picture. I will have to get a bright light to take the picture . Its mightly dark down there.

coltonk Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 09 Jun 2026 Online Status: Offline Posts: 3	Post Options Post Reply Quote coltonk Report Post Quote Reply Posted: Yesterday at 3:35pm
	Ok, I finally got an inspection camera and stuck it down the throat of the toilet. What I am seeing is a 45 degree pipe fitting angled towards the outlet pipe of the black water tank. Ive never seen this before on RV's!!

jato Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 23 Feb 2012 Location: Kewadin, MI Online Status: Offline Posts: 3434	Post Options Post Reply Quote jato Report Post Quote Reply Posted: Yesterday at 8:38pm
	I would fill the black water tank via the toilet until the water is up to the base of the toilet. Open the black water tank drain and observe what comes out. If nothing, take a snake through the drain and see if you can work anything loose, repeat at the toilet opening as well. Repeat the filling process and drain again to see what comes out.
	God's pod '11 model 177 '17 Ford F-150 4WD 3.5 Ecoboost Jim and Diane by beautiful Torch Lake "...and you will know the Truth and the Truth will set you free."