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Old 07-03-2016, 04:25 AM   #1
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Winnebago Owners Club
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2014 30T Vista black and grey tank vent pipe blockage?

Hi, looking for help. I can not access the Winnebago site schematic build 3D drawings on my IPad.

I am on the road and when doing a dump, the "water" stops flowing like the vent pipe is blocked, until a slug of air moves back up the drain hose.

Would someone please access these drawings, and copy and post several pictures of the vent system from the black and grey tanks right up to the vent hole in the roof so I may possibly identify what the problem is?

There are two choices of drawings, my vehicle is the second one.

My email is if the drawing are too big to post on this site.

Thanks in anticipation,


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Old 07-03-2016, 06:15 AM   #2
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some pics

I didn't have time to do proper research, but I have sent some pictures via your email. There are 2 different schematics depending on model #. These are for 30T (Serial Number begins with 10E42R1).
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Old 07-03-2016, 08:09 AM   #3
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Peter27C, here are a couple of shots of 30T (10E42R2).
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Name:	30T Vent 2.jpg
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Old 07-04-2016, 07:00 AM   #4
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Thanks you both very much. The pictures make the setup very clear. Looking at them it would appear that the only way I can have a blockage in the vent pipe is on the roof fitting, which I had changed to one of the Venturi types which supposedly allow natural airflow to suck the fumes out, which seemed to work very well by the way.
I will need to get on the roof and check it


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grey tank, tank, vent

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