Banging Coming From Behind Ramp Door

[navajochief]

I currently own a '16 Fuzion 325 and took it on its inaugural desert trip. Since this was dry camping I filled up my fresh water tank and fuel tanks. For the four days I was out, had no negative issue come up until the last two days. I started hearing what I can only describe as a Hammering sound coming from the rear of the trailer. It sounded as if someone was outside the trailer ramp door banging the door with a hammer. This happened after we all took showers and running water pump. Even after the pump was turned off, the hammering continued several times minutes later. I also experienced this when I opened up the fuel cap to fill my generator tank from my fuel station. I heard the fuel tank, I think, make a banging sound. So I'm not sure if this is water pump related or fuel pump related. I'm listing it as part of warranty repair but I would like to have some kind of explanation of causes so I won't sound like I don't know what i'm talking about when I drop it off.

Thanks.

[Desert185]

Does it only happen when people are moving around in the trailer or does it happen with no movement?

[roadglide]

If you have Hyd levering system it could shudder maybe one is leaking off some and causing the frame to settle. I would mark the rod and see if its leaking off. I would look at all the side walls and frame for cracks from what your describing something is coming loose.

[navajochief]

the leveling jacks (hydraulic) seem to be intact and without leaks. The banging was episodic and it happened when there was no movement. From what another forum member mentioned it could possibly be the water line and/or fuel pump at the fuel station. Structurally, the unit appears to be intact. No rips at the seams or cracks on the fiberglass and/or exterior walls let alone the roof.

[Desert185]

Try isolating the noise with a CB, fuse or on/off switch to the water and fuel pump when the noise is occurring. Odd one.