The_Five_Os
Member
I drained and flushed the black tank on our 2012 Cyclone 3800 like I've done several times in the past, however, this time I had an unexpected result. First, when I turned on the water to the flush system, there was a distinct growling sound coming from the area around the UDC and no water was coming out of the tank (nothing was draining to the sewer) for about a minute. I opened and closed the black tank valve several times and turned the water to the flush system on and off a few times. Finally, the water started to flow, but the growling continued. Finally, when I disconnected the sewer line, I noticed a bolt sitting in the pipe near the outlet to the sewer line. It's a bolt about 1 1/2" long with a distinct thin flat head about 3/4" long. Anybody have any idea where this bolt came from and if I should be worried? Besides the growling and temporary lack of flow from the flush, there doesn't seem to be any other symptoms.