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Old 11-09-2015, 10:57 PM   #11
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John Hagen: We have tried using the air in the basement but not where the check valve is. The dealer replaced the check valve but I hear what you are saying. If I can get to the check valve, I will try your suggestions. If not, I will ask the dealer to do that before they do more invasive work.

Jeff: I'm not sure if we would be able to access that point but I appreciate the suggestion.
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Old 11-12-2015, 09:54 AM   #12
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We had a similar issue and our Trilogy is probably plumbed the same as your's. When you remove the cover over the water manifold and look behind it (use a flashlight) you can see where the black tank flush connector is hooked up to a white, braided 1/2" hose. This hose developed a kink over time and cut off the water flow, the fix is to disconnect the hose and install a 90 deg. elbow - 10 min. tops.
Take a pic. with your cellphone and take it to the hardware store and ask an employee to help you find the correct fitting if you're unfamiliar with plumbing.
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Old 11-14-2015, 08:44 AM   #13
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Our rear black tank flush did not work when our unit was new. The check valve was indeed installed backward. So, if the mfg will install a check valve backward then you can be sure the hacks at a dealership can install it backward. absolutely check that first. it requires almost no effort. the valve will be marked with an embossed arrow indicating the direction water should flow. if the arrow is backward then no water will ever reach the tank. Good luck!


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Old 11-15-2015, 12:42 AM   #14
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Quote:
Originally Posted by Cypressloser View Post
We had a similar issue and our Trilogy is probably plumbed the same as your's. When you remove the cover over the water manifold and look behind it (use a flashlight) you can see where the black tank flush connector is hooked up to a white, braided 1/2" hose. This hose developed a kink over time and cut off the water flow, the fix is to disconnect the hose and install a 90 deg. elbow - 10 min. tops.
Take a pic. with your cellphone and take it to the hardware store and ask an employee to help you find the correct fitting if you're unfamiliar with plumbing.
I left out that the dealer did that the first time we took it in to be repaired. They sent us home saying it was fixed. That wasn't it. The dealer has worked on it three times and we are still going to have to return for the fourth trip.
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Old 11-15-2015, 12:44 AM   #15
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Quote:
Originally Posted by kwoodrg View Post
Our rear black tank flush did not work when our unit was new. The check valve was indeed installed backward. So, if the mfg will install a check valve backward then you can be sure the hacks at a dealership can install it backward. absolutely check that first. it requires almost no effort. the valve will be marked with an embossed arrow indicating the direction water should flow. if the arrow is backward then no water will ever reach the tank. Good luck!


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I wish we could figure out where the check valve is and we would try to do it ourselves. We definitely want them to try a new check valve before they tear everything out. Forest River could have made the flush easier to get to. Our dealer says it has a hose that snakes here and there!!
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Old 11-19-2015, 03:50 PM   #16
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My check valves are under the front and rear bathroom sinks


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