black tank flush hook up

Where is it leaking? Have you tried replacing the washer with the integrated screen? Last time I bought them, they were in a two pack, and maybe at Walley's.

Also since it goes to the black tank, i am prone to give that connection a little blast from the lube can.

I have found that some of these black tank flush inlets are located in a small space where it is really difficult to get a tight connection.

At least for normal to large hands.

On more than one occasion I have had a partial body shower from not getting the tank flush connection fully seated.

I have a 2016 cougar and twice I have had the elbow for the fresh water fracture and leak.you have to take the elbow off and shine a flashlight inside the elbow to see the crack the elbows were black in color and the replacements were gray and look like they are made a lot sturdy .one the dealer replaced and the next one I did.regular hardware stores didn't carry it.I found the elbow at a RV store and the parts department said he has never seen that elbow in black.maybe someone found a load of cheap elbows and installed them at the factory.i do use a pressure valve and the campground has low water pressure

Doogie in Elk Grove wrote:
Double check that the hose washer didn't fall out of the flush connection. I've had that happen and thought it was the connection when it was the lack of a hose washer in the connection.

Going by your post. I will have to agree with Doogie that you have lost the hose washer in the connection.

Look up Black Tank Flush Valve or "Black Water Tank Inlet". They are basically the same thing as a fresh water inlet, but usually have a black cap. They have no check valves in them. The check valve is located in the anti-siphon device, usually located inside the bathroom sink cabinet. It looks like this:

Double check that the hose washer didn't fall out of the flush connection. I've had that happen and thought it was the connection when it was the lack of a hose washer in the connection.