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Old 12-16-2018, 02:51 PM   #1
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Leaking holding tank vents alert and newbie

We bought our 2017 Interstate GT in August of last year and this is my first post. We have enjoyed the AS when we are not returning it to the dealer for repairs. I, like many other newbies, have thoroughly enjoyed this forum and would like to thank all the contributors. I have made numerous improvements to our RV thanks to the knowledge base of this forum. I cannot imagine owning a fairly complex piece of machinery like the Interstate without a forum such as this that helps everyone. Now for the bad news. We just returned Friday from the dealer because both of the vents (one to the black tank and one to the grey tank) were leaking into the RV when it rained. I initially thought it was from the sealant around the base of the vent on top. After several water hose tests it was clear water was penetrating the RV from inside the vent pipe. Turns out this vent (Products 360) uses a funnel piece that is supposed to be installed in the vent pipe hole before putting the vent cover over the pipe. This funnel is very important. It collects water that may get into the pipe and funnels it down thru the pipe into the holding tanks. Without it water can leak into the RV. This is what happened in my case. Both vents were missing the funnel.

I found this leak by accident. I had been working with Nova Kool (fridge has never has cooled properly) and removed my fridge. The shelf under the fridge was wet. I initially thought it was condensation from the fridge (we had recently been on a trip) and just wiped it up. I had the fridge out for a few days working on it and noticed water on the shelf again. It had been raining hard and blowing and could see water leaking from the vent where the pipe penetrates the RV. Just a slow steady drip. I then thought I should check the other vent so I removed the access panel below the rear TV and sure enough it was leaking as well. According to the dealer tech the vent pipe was too long and the vent cover would not fit with the vent funnel in place. So he assumed the factory tech just tossed the funnel and put the cap on. The factory tech may have done this to other Interstates so this is the reason for the alert. Of course, this may have happened only to me but the dealer thought other vehicles were likely affected. This link will show how this vent should be installed:

https://360productsnorthamerica.com/...rv-geeks-video

It is very likely you will never know you have a leak unless you happen to be mucking around the areas Iíve mentioned on a day of heavy blowing rain. If it is raining and no wind it may not leak. Water has to get under the vent cap and into the vent pipe. Which will probably only happen if you driving in the rain or parked in a heavy rain storm. The easiest thing you can do now is remove the back panel and with a flashlight look at the floor. If water has been in there you may be able to tell. In my case I saw the puddle of water and noticed a small rust spot on the bottom of the RV floor skin. Water was also dripping down the side of the toilet/shower enclosure. If you have water there then your black tank vent will probably be leaking as well. To check the black tank vent is more difficult but you might be able to just remove the left air vent above the fridge and feel around to see if water is penetrating before removing the fridge. Obviously, rather than wait for rain you can do the hose test. However, it may take a little while before it starts to leak. If you do not have the Products 360 vent then you probably donít have to worry about it. The video link above shows what the vent looks like.

Needless to say this is disappointing. Hopefully there is no significant hidden damage. Donít know why I thought after we sold our sail boat Iíd never have to worry about leaks again!
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Old 12-17-2018, 07:30 AM   #2
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Wow, welcome to Air Forums! For a new poster, you hit that one right out of the park! It's really valuable information, and if it happened on one rig, it probably happened on others. Yet another workmanship issue that, if not caught early, could jeopardize the integrity of the affected vehicles.
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Old 12-17-2018, 07:50 AM   #3
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There appears to be a database glitch - I had trouble on another thread, and now this one is repeated. Hopefully people will respond here and the mods will delete the duplicate.

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Old 12-17-2018, 09:09 AM   #4
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I apologize, the double posting is my fault. Five hours after I originally posted I never saw it in the Forum thread so I figured I messed up and I recent it. Won't do that again.
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Old 12-17-2018, 02:24 PM   #5
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Quote:
Originally Posted by orlik View Post
We bought our 2017 Interstate GT in August of last year and this is my first post. We have enjoyed the AS when we are not returning it to the dealer for repairs. I, like many other newbies, have thoroughly enjoyed this forum and would like to thank all the contributors. I have made numerous improvements to our RV thanks to the knowledge base of this forum. I cannot imagine owning a fairly complex piece of machinery like the Interstate without a forum such as this that helps everyone. Now for the bad news. We just returned Friday from the dealer because both of the vents (one to the black tank and one to the grey tank) were leaking into the RV when it rained. I initially thought it was from the sealant around the base of the vent on top. After several water hose tests it was clear water was penetrating the RV from inside the vent pipe. Turns out this vent (Products 360) uses a funnel piece that is supposed to be installed in the vent pipe hole before putting the vent cover over the pipe. This funnel is very important. It collects water that may get into the pipe and funnels it down thru the pipe into the holding tanks. Without it water can leak into the RV. This is what happened in my case. Both vents were missing the funnel.

I found this leak by accident. I had been working with Nova Kool (fridge has never has cooled properly) and removed my fridge. The shelf under the fridge was wet. I initially thought it was condensation from the fridge (we had recently been on a trip) and just wiped it up. I had the fridge out for a few days working on it and noticed water on the shelf again. It had been raining hard and blowing and could see water leaking from the vent where the pipe penetrates the RV. Just a slow steady drip. I then thought I should check the other vent so I removed the access panel below the rear TV and sure enough it was leaking as well. According to the dealer tech the vent pipe was too long and the vent cover would not fit with the vent funnel in place. So he assumed the factory tech just tossed the funnel and put the cap on. The factory tech may have done this to other Interstates so this is the reason for the alert. Of course, this may have happened only to me but the dealer thought other vehicles were likely affected. This link will show how this vent should be installed:

https://360productsnorthamerica.com/...rv-geeks-video

It is very likely you will never know you have a leak unless you happen to be mucking around the areas I’ve mentioned on a day of heavy blowing rain. If it is raining and no wind it may not leak. Water has to get under the vent cap and into the vent pipe. Which will probably only happen if you driving in the rain or parked in a heavy rain storm. The easiest thing you can do now is remove the back panel and with a flashlight look at the floor. If water has been in there you may be able to tell. In my case I saw the puddle of water and noticed a small rust spot on the bottom of the RV floor skin. Water was also dripping down the side of the toilet/shower enclosure. If you have water there then your black tank vent will probably be leaking as well. To check the black tank vent is more difficult but you might be able to just remove the left air vent above the fridge and feel around to see if water is penetrating before removing the fridge. Obviously, rather than wait for rain you can do the hose test. However, it may take a little while before it starts to leak. If you do not have the Products 360 vent then you probably don’t have to worry about it. The video link above shows what the vent looks like.

Needless to say this is disappointing. Hopefully there is no significant hidden damage. Don’t know why I thought after we sold our sail boat I’d never have to worry about leaks again!
Hi orlik,

We're very sorry to learn about the leak you are having. Please send us a direct message with your contact information and the last 6 digits of your VIN so we can share it with our Customer Service and Technical Support team. We look forward to helping you get this resolved.

You can also reach Airstream Customer Service and Technical Support at*customer_support@airstream.com*

Thank you.
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Old 12-17-2018, 03:39 PM   #6
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ORLIK - Welcome to the Forum and at same time, very sorry for the trouble you had. This is horrible to hear an entire generation of AI have this potential hazard. This is truly a hazard because there are many electricals that could short due to hidden water leaks. I hope all is fixed in your rig. Thank you for the HEADS UP WARNING. I am certainly going to check my vents now. Would like to add some tech data for others.

Lippert has made 2 gens of these units and in 2 versions
GEN1 in OEM & Aftermarket versions
GEN2 in OEM & Aftermarket versions

The video link supplied by ORLIK shows GEN1 Aftermarket. Video clip below in white & pic in black.
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On my 2018, the rig is supplied with GEN2 OEM. I would assume all AI would have the OEM versions UNLESS it was a very old AI that was modified to the 360, then they would have to use the Aftermarket version. Pics below of my Gen2.
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On the GEN2, it would be much easier to check if funnel is installed. All one has to do is pop out the top lid (Part B - held by 5 snap-clips). One should be able to see through the grates if the funnel is there or not.
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On GEN1, I do not believe the top lid is removable. You either need to remove entire unit which means scraping off the SikaFlex and unscrewing the entire unit/base OR have a light/inspection mirror or teeny inspection cam peeking through the grates. Pretty sure the mirror/cam method should reveal funnel without complete removal. Good luck.
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Old 12-17-2018, 08:23 PM   #7
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Roof Vent Leak Problem Solved, For Us, Anyway

We had the same problem on our '17 FCFB; days of rain and no leaks yet when the wind blew, drops started showing up in the bathroom ceiling along one of the riveted seams. Turned the hose on and water everywhere in the same spot.

Got up on the roof and pulled both 360 vents; on one, there was NO sealant between the pipe and the roof; on the other, gaps in the sealant between the two.

We removed the silicone caulk--yes, everything on the roof of our '17 is caulked with silicone, factory original--but this is easily removed with 3M's specialty adhesive remover. Amazing stuff!

Once the vent pipes were caulked between the ABS pipe and roof with Sikaflex, we put a strip of butyl tape on the base of each 360 vent and screwed these down with new, stainless steel screws as the galvanized ones that came with the unit were already beginning to show signs of rust. Additionally, the factory screws were torqued to the point of the bases being somewhat deformed, probably accellerating the potential for leakage. After these were in place, we put a dab of Sikaflex on each screw.

BTW--the little 'funnel' pieces inside don't seem to do much on or off the pipes as they're not sealed to it, just placed inside, so if water gets between the funnel and the pipe, it still goes down the pipe. One of the pipes was cut somewhat jagged, so the fit was less than ideal but it's just a vent... Retested with the hose and no leaks; hard rain around the first of Dec, no leaks, several windy showers since, no leaks.

I like the look of the redesigned 360 vents; perhaps we'll install a pair in a couple of years as the originals are already showing some 'checking' of the PVC after two seasons in the Texas summers.

BTW--our refit with pix is on Airstream Addicts, just search under 'sewer vent leaks'. Hope this comes in handy for what seems to be a somewhat epidemic problem.

Thanks!
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Old 12-18-2018, 06:24 AM   #8
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Quote:
Originally Posted by orlik View Post
I apologize, the double posting is my fault. Five hours after I originally posted I never saw it in the Forum thread so I figured I messed up and I recent it. Won't do that again.
Not your fault. I'm pretty sure the database was re-set to an earlier version on that day (I saw it, or something like it, happen in front of my eyes). Large databases sometimes either corrupt or get manipulated such that they roll back to an earlier point on the time continuum as a way of rectifying the error. Everything done in the intervening time gets erased. Somehow your thread was later resurrected, which suggests a deliberate process, but not everything was restored. This platform appears to be owned by a young tech whiz who lives in Dallas. Beyond that, I know very little about it, or how it works.
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Old 12-18-2018, 08:40 AM   #9
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Can the lid be removed from the lid base without damage, so that one can look through the screen and see the funnel? And/or can you remove the lid base from the collar after removing the lid? Or do you have to remove the entire assembly to see if the funnel is installed? My 2013 vent cap does not look exactly like the current 360 (and far as I know it does not leak) but it may be an older style of 360.
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Old 12-18-2018, 09:52 AM   #10
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Quote:
Originally Posted by Alex AVI View Post
ORLIK - Welcome to the Forum and at same time, very sorry for the trouble you had. This is horrible to hear an entire generation of AI have this potential hazard. This is truly a hazard because there are many electricals that could short due to hidden water leaks. I hope all is fixed in your rig. Thank you for the HEADS UP WARNING. I am certainly going to check my vents now. Would like to add some tech data for others.
Thanks for posting the extra tech data. I'm not familiar with the different models that might be installed, but I'm sure your information will be helpful to others. The dealer installed two new vents. It was raining when we returned from the dealer and there were no leaks. So I hope all is well. I just checked our vents and it appears we have the GEN2 model you described.
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Old 12-18-2018, 09:58 AM   #11
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Originally Posted by InterBlog View Post
Not your fault. I'm pretty sure the database was re-set to an earlier version on that day (I saw it, or something like it, happen in front of my eyes). Large databases sometimes either corrupt or get manipulated such that they roll back to an earlier point on the time continuum as a way of rectifying the error. Everything done in the intervening time gets erased. Somehow your thread was later resurrected, which suggests a deliberate process, but not everything was restored. This platform appears to be owned by a young tech whiz who lives in Dallas. Beyond that, I know very little about it, or how it works.
Thanks for filling me in. I also received note form moderator and was informed that because I posted with an embedded link the post had to be reviewed before making its way into the forum, which was why there was a delay. I think all is well now. The other post has been deleted.
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Old 12-18-2018, 10:03 AM   #12
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Quote:
Originally Posted by Titus View Post
Can the lid be removed from the lid base without damage, so that one can look through the screen and see the funnel? And/or can you remove the lid base from the collar after removing the lid? Or do you have to remove the entire assembly to see if the funnel is installed? My 2013 vent cap does not look exactly like the current 360 (and far as I know it does not leak) but it may be an older style of 360.
Titus, Perhaps Alex can chime with a little more input but I think it would help if you posted a picture of your vent so we can see what you have. I'm not sure when AS began using the 360 Products vent.
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Old 12-18-2018, 12:49 PM   #13
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Quote:
Originally Posted by Titus View Post
Can the lid be removed from the lid base without damage, so that one can look through the screen and see the funnel? And/or can you remove the lid base from the collar after removing the lid? Or do you have to remove the entire assembly to see if the funnel is installed? My 2013 vent cap does not look exactly like the current 360 (and far as I know it does not leak) but it may be an older style of 360.
TITUS - Using the diagram I provided
Part B = Lid
Part C = Lid base
Part D = Funnel
Part E = Collar (not applicable to OEM version, only in aftermarket i stalls)
Part F = Base (vent base)

If Gen1, you most likely need to remove entire assembly as it is one unit (from all indications & pics & install instructions from Lippert).

If Gen2 OEM version, all above parts appear to be pre-assembled from Lippert. Just snap Part D funnel under 360, apply supplied sealant/tape under base, install over stack pipe, screw in, SikaFlex base & screws.

If Gen2 Aftermarket version, all above parts have to be put together and sealed using sealant by installer. Either OEM or Aftermarket version couldve still been used on a new stack vent pipe. But either way, based on strength of sealant used between the parts, it may prove difficult to separate them once sealed/stuck together. So even though the parts could've been put together by installer, they may now be one unit. Only Gen2 Part B (Top Lid, not Lid Base) could be removed after everything is stuck together.
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Old 12-18-2018, 08:26 PM   #14
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PITA to pop off the top lid. Those 5 snap clips are stiff. I felt I was going to break the clip arms and/or slice my fingers in process. But they did not. Best way is to use your entire hand (mine are small, larger hands would be better grip) and cup entire bottom 5 clip arms. Use thumb to bend one to disengage. Then the other 4 gets easier. DO NOT USE ANY TOOLS OR RISK DAMAGE. Then use bright line to check for presence of funnel.
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