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Old 06-03-2018, 02:18 PM   #1
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2018 30' Flying Cloud
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Water leaking through floor and pan

We have a 2004 28’ International that developed a leak on our last trip. We filled the tank and about 24 hours later, before using any water, we were at about 70%. We noticed water leaking from the bottom back pan and also through the floor in our back bedroom (on the back side of the wall from the toilet).

Any suggestions on where to start? My husband is handy but the Airstream is pretty intimating for him. HELP! We’re worried we not only have a water issue but this could have caused an issue with the flooring and insulation.
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Old 06-03-2018, 02:38 PM   #2
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I would first check the filler tube inside the trailer. Its made of real cheap plastic and can crack easily at bends or at the clamp fitting to the tank.

Unless I am planning on boon docking, i would never fill my tank 100% for travel. Was the trailer moving when you lost the water or stationary?
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Old 06-03-2018, 02:44 PM   #3
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Originally Posted by PeterH-Airstreamer View Post
I would first check the filler tube inside the trailer. Its made of real cheap plastic and can crack easily at bends or at the clamp fitting to the tank.

Unless I am planning on boon docking, i would never fill my tank 100% for travel. Was the trailer moving when you lost the water or stationary?
Where might one look for the “filler tube”?

Both. We lost a lot of water in transit and continued to lose water throughout the trip.

We’re normally boon docking and always fill our tank to 100%...should we fill less?

I really appreciate the help! We’re newbies and have a lot to learn.
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Old 06-03-2018, 02:50 PM   #4
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I think this is your floorpan for the 2004 28'.

1. Where exactly are you seeing water? is water leakage showing up in the interior or are you seeing leakage on the exterior, or both?

2. For the 24 hours where you saw water levels drop - was the pump turned on to pressurize the system during this time? or was the pump turned off?

3. Finally - can you confirm that the tank showing 100% on the monitor immediately after you filled it, then 70% next day?
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Old 06-03-2018, 03:16 PM   #5
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I think this is your floorpan for the 2004 28'.

1. Where exactly are you seeing water? is water leakage showing up in the interior or are you seeing leakage on the exterior, or both?

2. For the 24 hours where you saw water levels drop - was the pump turned on to pressurize the system during this time? or was the pump turned off?

3. Finally - can you confirm that the tank showing 100% on the monitor immediately after you filled it, then 70% next day?

Yes, that is our floor plan.

1. We were seeing water inside, behind the wall of the toilet (it soaked part of a rug we had down). I couldn’t tell exactly where it was coming from but we didn’t see any water on the other side of the wall, where the toilet is. On the outside, it was dripping from the underside of the body, on the passenger side. Although, when we moved it started dripping from the driver side so I think that was just because of how it was leveled.

2. We think the pump was on during travel, but can’t be sure. Once we arrived and noticed a water issue, we only ran the pump when needed. My husband insists that we were only losing water while the pump was running.

3. Yes, it was at 100% and then dropped to ~70% the next day. Then continued to substantially drop over the next 4 days of our trip.
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Old 06-03-2018, 03:43 PM   #6
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When the pump switch is on but no faucets are being used, does the pump motor run continuously, or at least frequently? This would indicated a leaking fitting somewhere when the pump is on and the system is pressurized. I would poke around behind the toilet, inspecting the flush valve and fittings to it. Also, if there is an aluminum cover somewhere around the toilet (not all trailers) remove that to look at those fittings as well.
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Old 06-03-2018, 03:46 PM   #7
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Thanks.

Sure sounds like you have a fresh water plumbing line that is leaking at the toilet (single cold water line feeding that) or under the sink (hot and cold lines feeding the sink).

Could be as simple as a loose (threaded) connection under the bathroom sink, or Could be a press fit joint in one of the PEX (plastic) water lines. Hopefully its the prior and a new gasket / hand tightening will do the trick.

Have you checked the toilet line and under the sink for sines of leakage from the red and white water lines?
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Old 06-05-2018, 10:01 AM   #8
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Thanks.

Sure sounds like you have a fresh water plumbing line that is leaking at the toilet (single cold water line feeding that) or under the sink (hot and cold lines feeding the sink).

Could be as simple as a loose (threaded) connection under the bathroom sink, or Could be a press fit joint in one of the PEX (plastic) water lines. Hopefully its the prior and a new gasket / hand tightening will do the trick.

Have you checked the toilet line and under the sink for sines of leakage from the red and white water lines?
I just checked and everything that is visible is tight. Any advice on where to begin?
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Old 06-05-2018, 10:27 AM   #9
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Well it sound like it’s def on the curb side of the unit. Wulf is right prob a pex crimp or threaded fitting. Check to make sure that the “bell” of the threaded fitting is not cracked. See photo
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Old 06-05-2018, 10:58 AM   #10
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Well it sound like it’s def on the curb side of the unit. Wulf is right prob a pex crimp or threaded fitting. Check to make sure that the “bell” of the threaded fitting is not cracked. See photo
Where do I find that part on my Airstream? Sorry if this is obvious, we’re new Airstream owners. Thanks for your help!
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Old 06-05-2018, 11:14 AM   #11
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Suggest the following:

For the curb (bathroom) side:

Pull the curved wood panel behind the toilet which is easy with 2 screws capped with screw covers. Check plumbing lines. Feel around the inside of the wood panel to the left of the toilet or use a mirror. You can get in there a ways through the small opening once the above curved cover is off. This is where the toilet fill is routed. Maybe slip a dry cloth or paper towel to identify leak area.

Pull the rear panel inside the sink cabinet which has a few screws holding it in palace. Use a mirror to look down behind where the plumbing is located. Check for leaks.

Might be able to peek behind the heater vent at the bottom of the sink cabinet.

I have another process for the other side (kitchen) that enables you to see all the plumbing which is on that side and how it's routed under floor to the bathroom. We had a leaky pressure regulator that just needed to be tightened to resolve a wheel well drip. Didn't wet the floor because the drip was onto the wheel well behind the hall closet cabinet.

Fairly familiar with plumbing on this model since I poked around just checking things to confirm there were no other leaks. Pump coming on during the night for a few seconds ever so often is usually indicative of water escaping somewhere. This was a clue along with the front wheel well drip which at first I thought was the AC since the drain is in that area too.

Wade
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Old 06-05-2018, 11:33 AM   #12
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Water leak

You might have 2 issues. We found out the hard way not to have much water in the toilet bowl when traveling. If u read the manual (I read it after) it tells you this.
The water coming underneath the trailer could be a cracked welded fitting on the fresh water tank. I had to have one of those replaced due to that issue.
The manual also states not to have the pump on when traveling so if a bump opens a spigot.
Good luck.
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Old 06-05-2018, 12:09 PM   #13
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Originally Posted by kb7our View Post
Suggest the following:

For the curb (bathroom) side:

Pull the curved wood panel behind the toilet which is easy with 2 screws capped with screw covers. Check plumbing lines. Feel around the inside of the wood panel to the left of the toilet or use a mirror. You can get in there a ways through the small opening once the above curved cover is off. This is where the toilet fill is routed. Maybe slip a dry cloth or paper towel to identify leak area.

Pull the rear panel inside the sink cabinet which has a few screws holding it in palace. Use a mirror to look down behind where the plumbing is located. Check for leaks.

Might be able to peek behind the heater vent at the bottom of the sink cabinet.

I have another process for the other side (kitchen) that enables you to see all the plumbing which is on that side and how it's routed under floor to the bathroom. We had a leaky pressure regulator that just needed to be tightened to resolve a wheel well drip. Didn't wet the floor because the drip was onto the wheel well behind the hall closet cabinet.

Fairly familiar with plumbing on this model since I poked around just checking things to confirm there were no other leaks. Pump coming on during the night for a few seconds ever so often is usually indicative of water escaping somewhere. This was a clue along with the front wheel well drip which at first I thought was the AC since the drain is in that area too.

Wade
Unfortunately, there are no screws holding the curved panel behind the toilet. Do I just need to score the caulking to pop it out? If my picture comes through, do I need to remove 1 (curved panel next to toilet) to get to 2 (curved panel behind toilet)? Thanks again for walking me through all of this!
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Old 06-05-2018, 02:48 PM   #14
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Originally Posted by gretchenfran View Post
Unfortunately, there are no screws holding the curved panel behind the toilet. Do I just need to score the caulking to pop it out? If my picture comes through, do I need to remove 1 (curved panel next to toilet) to get to 2 (curved panel behind toilet)? Thanks again for walking me through all of this!
Ah yes your cabinetry is different than our FC but should be similar access since we have the same floorplan, you just need to figure out how to remove the panels carefully. Sorry I cannot help further. Wade
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