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Old 12-27-2008, 05:56 AM   #1
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First of all a little background on what appears to be a continuing problem.

Last summer we had a problem with our black water tank. It started on a week long outing when we had a mobile sewer truck pump out the tanks. It seems the suction from their pump was more than the plumbing could handle. We found out the hard way that the vent pipe had disconnected from the black water tank. My assumption is that the suction partially collapsed the top of the tank allowing the vent pipe to disconnect.

When we arrived at home there was a foul smell and water dripping down the sides of the coach. After removing several access panels I found one end of the black water tank was no longer supported by the wedge shaped Styrofoam support block and vent pipe detached. At this point I called Winnebago to see if there were any other similar incidences reported, and if there was a known fix for the problem. I also inquired as to any upgrades on the tank installation that might prevent future problems. They were unaware of any similar problems, and assured me the tanks on the newer units were installed in a similar manner.


After several hours of cleaning and repositioning I was able to get the block repositioned under the tank and the pipe reattached. I tested everything for leaks and all seemed well. Once everything was back in its proper place I again called Winnebago to ask if newer models have additional brackets on the tanks to keep them from moving around. (Our tanks have brackets front and rear, and on the drivers side to prevent movement in those direction, but there are no brackets on the passengers side. Unfortunately the black tank support block worked itself out in the only direction there were no brackets.) Again I was told tanks in the newer models were installed in a similar manner.

All was well through the summer and fall months, but after returning from a 3,000 mile round trip to Florida it appears the tanks are starting to shift once again. This time the tanks appear to have shifted slightly forward. There are no leaks but the grey water drain valve is now about 1/4 farther forward and is difficult to open. It interferes with the edge of the metal panel holding the water connections, pump switch, and work light switch.

Has anyone experienced a similar problem, and if so were you able to come up with a permanent cure?
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Old 12-27-2008, 05:56 AM   #2
Senior Member
 
Join Date: Nov 2005
Posts: 3,935
First of all a little background on what appears to be a continuing problem.

Last summer we had a problem with our black water tank. It started on a week long outing when we had a mobile sewer truck pump out the tanks. It seems the suction from their pump was more than the plumbing could handle. We found out the hard way that the vent pipe had disconnected from the black water tank. My assumption is that the suction partially collapsed the top of the tank allowing the vent pipe to disconnect.

When we arrived at home there was a foul smell and water dripping down the sides of the coach. After removing several access panels I found one end of the black water tank was no longer supported by the wedge shaped Styrofoam support block and vent pipe detached. At this point I called Winnebago to see if there were any other similar incidences reported, and if there was a known fix for the problem. I also inquired as to any upgrades on the tank installation that might prevent future problems. They were unaware of any similar problems, and assured me the tanks on the newer units were installed in a similar manner.


After several hours of cleaning and repositioning I was able to get the block repositioned under the tank and the pipe reattached. I tested everything for leaks and all seemed well. Once everything was back in its proper place I again called Winnebago to ask if newer models have additional brackets on the tanks to keep them from moving around. (Our tanks have brackets front and rear, and on the drivers side to prevent movement in those direction, but there are no brackets on the passengers side. Unfortunately the black tank support block worked itself out in the only direction there were no brackets.) Again I was told tanks in the newer models were installed in a similar manner.

All was well through the summer and fall months, but after returning from a 3,000 mile round trip to Florida it appears the tanks are starting to shift once again. This time the tanks appear to have shifted slightly forward. There are no leaks but the grey water drain valve is now about 1/4 farther forward and is difficult to open. It interferes with the edge of the metal panel holding the water connections, pump switch, and work light switch.

Has anyone experienced a similar problem, and if so were you able to come up with a permanent cure?
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Old 12-28-2008, 06:21 AM   #3
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I'm surprised this problem is so unusual that no one else has had the misfortune to experience it. I'll have to talk to the people at Winnebago again Monday to see if there's been anyone else in for service with anything similar.

It looks like we may be the ones to break new ground in this area.
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Old 12-28-2008, 06:47 AM   #4
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Is there any place to put a strap or two?
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2003 Winnebago Adventurer 38G F53/ V10 605 watts of Solar
1999 Winnebago Brave 35C F53V10 Handicap Equipped
1999 Jeep Cherokee, 1991 Jeep Wrangler Renegade and 2018 Chevrolet Equinox Diesel
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