Fresh Water Leak / Plumbing Diagram

[PhysicsKid]

Hola, Streamers

My wife and I recently purchased a 2014 20ft "discounted" Flying Cloud knowing that it had an undiagnosed fresh water leak. I replaced the pump which had a defective check valve as well as the fresh water inlet / regulator. It still leaks and I have not been able to locate a plumbing diagram or service manual.

The symptoms are: When running either the new fresh water pump or city water (some junction where they meet up?) ... I get leakage from a sealed chassis area behind the axle on the driver's side on either side of the sewage tanks / valves. There is no sign of leakage from either the gray or black water drains ... we can flush toilet, drain sink or shower w/o water leakage. As soon as we turn on pump or pressurize w/ city water ... it begins dripping.

I removed panels from inside trailer and cannot find signs of water on any of the lines.

Any help you can give or ... link to plumbing diagram or service manual would be greatly appreciated.

Dave

[Jim J]

Check the fresh water valve to the toilet. That can be overlooked when you winterize. The foot operated valve is easy to replace.

Also check the pex lines in the bath area behind the cabinets and the low water drain valves and the outdoor shower.


Since you already found one leak, I suspect something else had water in it when it got cold enough to freeze and that cracked one or more fittings somewhere. The low places where plumbing is exposed to the coldest temps are where I would start looking.

You may be able to isolate the location by pressurizing your fresh water system with air using an adapter you screw into the city water port that lets you connect to an air hose. Pressurize to about 40 PSI, Then after turning off all the taps, listen for the air escaping from the leak(s).

[PhysicsKid]

Jim ... thx for your reply.

I finally did isolate the leak ... in the shower valve ... cocooned behind the molded shower shell. I excavated the valve leaving enough melamine material to re-attach the trim plate. I was able to replace all 3 pex elbows with shark-bites.

This was by far the most daunting repair I have had to do to date ... but it seems to have worked.

Thanks again ... I am saving you response for future leaks.

Dave

[Jim J]

Good job Dave, you earned that discount!

[BayouBiker]

Also for reference, for many models and years (but not all), the parts manual available online with include fresh water diagrams. The User manuals most often include the grey and black sewer line diagrams.

[Native143]

I have the same model When I turn on the water pump it will come on intermittently. I Put a paper towel under the fresh water inlet valve behind the wall under the sink and after an evening the paper towel is wet. Hence I assume the leak is in the fresh water inlet valve. How in the world do I fix that when it’s inside the two walls. Thanks in advance

[Native143]

How did you replace and or access to fresh water inlet valve. that is where my leak is. Between the walls