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Old 01-09-2015, 07:43 PM   #1
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Fresh Water Tank

I have a 2014 Rockwood 8280WS fifth wheel. I have been on the road full time since April of last year. On average, I move campgrounds about every 4 days. I always use my fresh water tank/water pump as opposed to using the city water connection. I do this so my fresh water is always being "turned over". To get my fresh water tank completely filled, the air vent will blow air out from the tank. If the air does not come out, an air bubble is created in the tank thereby preventing a full tank. Over the past several months, there were times when the air would not vent out. This would happen maybe 1 out of every 5 times. I chalked it up to not being perfectly level which would cause the vent to go under water prior to venting the air. However, it has now not vented in the last 10 to 15 times. Remember, I moved about every 4 days so each filling is in a different campground with different leveling conditions (ie, slightly left, right, back or forth). One thought was the air vent has become detached. If so, I would think the tank would vent out the hole and create a watery mess somewhere. I'm thinking about removing the screen over the vent and running a small diameter hose down it to see what happens.

Has anyone run across this before? Any ideas?
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Old 01-12-2015, 02:37 PM   #2
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I had the same problem. I solved it by holding my hand around the fill hose to force air through the vent. The hose had a low spot and created a air lock. After that the problem did not return.
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Old 01-12-2015, 03:28 PM   #3
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been there done the same thing little bit of water got in the vent line and caused an airlock. I used an air compressor with a little bit air pressure maybe 10 psi tops. Solved the issue. that'll teach you to let the tank overfill
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Old 01-13-2015, 03:45 PM   #4
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Thanks guys. I was hoping it was that easy. I'll get something to blow out the vent line.
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Old 01-15-2015, 01:51 PM   #5
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As a follow-up. I bought a turkey baster with a rubber bulb. After removing the screen, the diameter of the baster tip fits snugly and air-tight in the vent line. I removed the squeeze bulb and with one small breath, I blew the water that was trapped in the air vent through. I began filling up the tank and air was immediately coming from the air vent. I was able to get the tank fills to its capacity. Works great.

Thanks for the info.
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Old 01-15-2015, 01:54 PM   #6
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Old 01-15-2015, 04:24 PM   #7
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Quote:
Originally Posted by Darrell View Post
As a follow-up. I bought a turkey baster with a rubber bulb. After removing the screen, the diameter of the baster tip fits snugly and air-tight in the vent line. I removed the squeeze bulb and with one small breath, I blew the water that was trapped in the air vent through. I began filling up the tank and air was immediately coming from the air vent. I was able to get the tank fills to its capacity. Works great.

Thanks for the info.
Excellent idea!
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Old 01-15-2015, 04:54 PM   #8
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Originally Posted by Camo Dan View Post
been there done the same thing little bit of water got in the vent line and caused an airlock. I used an air compressor with a little bit air pressure maybe 10 psi tops. Solved the issue. that'll teach you to let the tank overfill
This could be the issue. My last trailer had a kink in the vent hose. You may also want to check for that
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Old 01-15-2015, 05:14 PM   #9
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on a previous TT I HAD the same problem, so I put a smaller hose inside the fill hose down to the tank, worked for me
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