Black Water Tank Flusher won’t work

[orabun]

I have a 2005 Forest River Cardinal 5th wheel. When I drain my black water tank and try to flush the tank with the water hose, but water want go in the tank. The water line goes straight up. What am I doing wrong or not doing right?

[babock]

Originally Posted by orabun

I have a 2005 Forest River Cardinal 5th wheel. When I drain my black water tank and try to flush the tank with the water hose, but water want go in the tank. The water line goes straight up. What am I doing wrong or not doing right?

What do you mean by "water line goes straight up"?

[dward51]

What brand/model flusher? And what do you mean by "the water line goes straight up"? Can you post a photo?

[bubbles]

Originally Posted by orabun

I have a 2005 Forest River Cardinal 5th wheel. When I drain my black water tank and try to flush the tank with the water hose, but water want go in the tank. The water line goes straight up. What am I doing wrong or not doing right?

Here is a typical factory install of a black tank flush system. It's self contained. The vacuum breaker/check valve could be located in any of several places (under vanity/behind shower/in washer dryer closet etc.). It will be located at least 6" above the toilet rim height though wherever it is. This is a typical install and your valve may look different (clear/black/different shape etc.). Your issue may be a clogged tank nozzle/inoperative valve/valve installed backwards etc..

[Telstar]

I also have a 2095 Cardinal. The water line goes up to where the check valve is located behind the shower faucet. Last year when my sprayer got clogged I found it was the spray head in the tank. Although some have had success in cleaning it with chemicals I choose to replace it. I bought a spinner type at Camping World. I did a hose test of the two in the front yard and found the spinner type much more efficient. As for replacing the sprayer I removed the screws holding down the storage floor and slid the plywood out the passenger side. This gave me full access to the tank without having to mess with the under belly sheeting. .

[orabun]

I have a 2005 Forest River Cardinal rv I bought second hand. It has a water hose connection for flushing your black water tank, but I cant get it to work. When I connect the water to it it dosen't let water into the tank. The water line for the flush fitting goes up the inside of the wall instead of going toward the black water tank. Any help with this would be greatly appreciated. I'm not use to this large of a unit. Maybe you could tell me the step by step directions to draining the black water tank. Thanks.

[Mr. Dan]

Originally Posted by orabun

I have a 2005 Forest River Cardinal rv I bought second hand. It has a water hose connection for flushing your black water tank, but I cant get it to work. When I connect the water to it it dosen't let water into the tank. The water line for the flush fitting goes up the inside of the wall instead of going toward the black water tank. Any help with this would be greatly appreciated. I'm not use to this large of a unit. Maybe you could tell me the step by step directions to draining the black water tank. Thanks.

I’m a little surprised a 2005 unit has a black tank flush but it sounds like it does. Water lines for all black tank flush rigs go up. There’s a vacuum break/check valve thing that must be at least 6” higher than the top rim of your commode. Those devices fail, stop up, are installed backwards, etc. Some are in the bathroom cabinet. Mine is in the outside wall behind my shower surround.
Also, your flush nozzle could be stopped up.

[orabun]

Originally Posted by bubbles

Here is a typical factory install of a black tank flush system. It's self contained. The vacuum breaker/check valve could be located in any of several places (under vanity/behind shower/in washer dryer closet etc.). It will be located at least 6" above the toilet rim height though wherever it is. This is a typical install and your valve may look different (clear/black/different shape etc.). Your issue may be a clogged tank nozzle/inoperative valve/valve installed backwards etc..

Thanks for your help. I'm sorry I didn't thank you sooner but I'm just now seeing your reply. Otis

[orabun]

Originally Posted by Telstar

I also have a 2095 Cardinal. The water line goes up to where the check valve is located behind the shower faucet. Last year when my sprayer got clogged I found it was the spray head in the tank. Although some have had success in cleaning it with chemicals I choose to replace it. I bought a spinner type at Camping World. I did a hose test of the two in the front yard and found the spinner type much more efficient. As for replacing the sprayer I removed the screws holding down the storage floor and slid the plywood out the passenger side. This gave me full access to the tank without having to mess with the under belly sheeting. .

Thank you for your help. I'm sorry I'm just now getting back to you, but I'm just now seeing your reply to my post. Thanks again. Otis