Just picked up a 2006 Attitude 26' toy hauler 2 weeks ago.....It has two 50 gallon water tanks.We went out w last weekend and had a little problem.we ran out of water a little to quick....I crawled under the tanks..... first tank was empty and the 2nd tank was full but not transferring to the first one. maybe a vent type problem. It was saturday night and I just poured in 30 gallons from a drum I had in the bed of my truck into the 1st tank.... all worked well.Today I emptied both tanks at home.....2nd tank 1.5" transfer hose was 100% clear and also the 3/8 or 1/2" vent hose.Soon why didn't the 2nd tank transfer over to the 1st tank last weekend?Thank you for your help folks, Robert.

I too have an attitude with 2 tanks, mine has a single common fill, and have an equalizing tube and cross vents. Do you have two fill tubes ? I ask as how did both tanks fill,or how did you fill the empty tank? I suspect there may be plastic plug in the one of your tanks keeping a vent or equalizer from working after it was full, but did not block it as you were filling. I learned I need to fill the water slowly or allow time for the tanks to equalize prior to topping it off. I top off 3 times to be sure. If the water doesn't start pouring out immmeadeately, I know the tanks are still equalizing.

Humm, tanks should equalize normally.

Geno92308 wrote:I too have an attitude with 2 tanks, mine has a single common fill, and have an equalizing tube and cross vents. Do you have two fill tubes ? I ask as how did both tanks fill,or how did you fill the empty tank? I suspect there may be plastic plug in the one of your tanks keeping a vent or equalizer from working after it was full, but did not block it as you were filling. I learned I need to fill the water slowly or allow time for the tanks to equalize prior to topping it off. I top off 3 times to be sure. If the water doesn't start pouring out immmeadeately, I know the tanks are still equalizing.Nope... 1 filler and right next to it is the vent with a little screen on it. The 1st tank went empty and the 2nd tank was full but not transferring / equalizing all along as it should have with the first one.... so when I put in the 30 gallons it went into the 1st tank. If it happens again on our Thanksgiving outing I will pull the vent hose off that #2 tank and see if that does the trick of moving the water to the #1 tank as it should be doing all along.

Strabo wrote:Humm, tanks should equalize normally.100% agree......

The vent you see at the fill point probably goes to tank #1 and there's a separate vent for tank #2. Look to find this vent and ensure it's clear and not plugged. It could well be also that the #2 tanks vent was never installed.

Fresh Water Tanks Problem...... | Good Sam Community

15 Replies

We_Cant_Wait
Explorer
Nov 08, 2015
The vent you see at the fill point probably goes to tank #1 and there's a separate vent for tank #2. Look to find this vent and ensure it's clear and not plugged. It could well be also that the #2 tanks vent was never installed.
RK_Racing
Explorer
Nov 07, 2015
Strabo wrote:
Humm, tanks should equalize normally.

100% agree......
RK_Racing
Explorer
Nov 07, 2015
Geno92308 wrote:
I too have an attitude with 2 tanks, mine has a single common fill, and have an equalizing tube and cross vents. Do you have two fill tubes ? I ask as how did both tanks fill,or how did you fill the empty tank?

I suspect there may be plastic plug in the one of your tanks keeping a vent or equalizer from working after it was full, but did not block it as you were filling.

I learned I need to fill the water slowly or allow time for the tanks to equalize prior to topping it off. I top off 3 times to be sure. If the water doesn't start pouring out immmeadeately, I know the tanks are still equalizing.

Nope... 1 filler and right next to it is the vent with a little screen on it. The 1st tank went empty and the 2nd tank was full but not transferring / equalizing all along as it should have with the first one.... so when I put in the 30 gallons it went into the 1st tank. If it happens again on our Thanksgiving outing I will pull the vent hose off that #2 tank and see if that does the trick of moving the water to the #1 tank as it should be doing all along.
Strabo
Explorer
Nov 07, 2015
Humm, tanks should equalize normally.
Geno92308
Explorer
Nov 07, 2015
I too have an attitude with 2 tanks, mine has a single common fill, and have an equalizing tube and cross vents. Do you have two fill tubes ? I ask as how did both tanks fill,or how did you fill the empty tank?

I suspect there may be plastic plug in the one of your tanks keeping a vent or equalizer from working after it was full, but did not block it as you were filling.

I learned I need to fill the water slowly or allow time for the tanks to equalize prior to topping it off. I top off 3 times to be sure. If the water doesn't start pouring out immmeadeately, I know the tanks are still equalizing.

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Fresh Water Tanks Problem......

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