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Old 10-19-2013, 04:16 AM   #29
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Newmar Owners Club
Join Date: Aug 2013
Location: Knoxville, TN
Posts: 124
Hi, Pollyanna ~

I posted the comment below in a thread started by a prospective 2013 Raven3300CK, 5th Wheel (SunnyBrook/Winnebago) owner who wanted input on any issues we have had. We have owned our rig almost a year now. This was our experience with holding tanks. Just a little more information for you to ponder…...

THE KITCHEN GRAY TANK (#1) OVERFLOWED. (The sensor for this tank is temperamental). Anyway, we were under the impression that if the tank was full, the back up would occur up through the sink. Not what happened.
After doing dishes one evening we heard water running under the 5th wheel, gushing actually. Jim ran out and pulled the holding-tank lever so the remainder of the water drained into the sewer.
When we took it in for the repair, we got this comment from the service dept:
"Connected hose to fill gray tank to find leak. Noticed a leak from behind water valve. Removed panel in pass-through storage compartment to access back of valve and found a loose inlet hose and clamp. Tightened and tested for fresh leak. All OK. Then pulled belly pan down in a couple spots and leak is on top of the tank. Searched more and found leak from pipe coming down from kitchen sink. Removed circuit breaker box and furnace cover and found the y-pipe for sink and vent just above tank is cracked. Removed section of belly pan to lower gray tank. Disconnected pipes and lowered tank. Cut off bad sections of pipe and installed new pipe and fittings."

Good luck.

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Old 10-19-2013, 09:43 AM   #30
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Location: Central Texas
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I have a Montana and we had the galley tank leak too. It got full and we heard water gushing out. Our Extended Warranty covered the bill. Here when Keystone installs these tanks they connect everything with solid pipe, So what happens is when the tank gets full it sags and either splits the tank at the inlet or breaks the pipe????? Terrible design for something that bounces down the road. So when the dealer reinstalled the tank they connected it with a rubber sleeve so it could flex. They just don't make em like they used to......

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Old 10-20-2013, 08:02 AM   #31
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Location: Lowell, Arkansas
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There are several negative issues with these tanks. Our first TT had sagging tanks within 2 weeks of getting it home. We were told to never travel with a full tanks of any sorts. To me that's just stupid engineering.

When it was repaired I asked that they install a piece of 1/2" plywood so the weight would spread our and the tank wouldn't sag. Com on just how much would it cost them to put a piece of ply wood under the tanks???? With their buying power I doubt they'd spend $15 per unit.

If you find any TT with tires and axles that can handle 1,000 pounds over the maximum rating for that TT I'll buy it and give it to you. Just kidding !!
I doubt you will find any TT rated to carry it's maximum weight. They are usually designed to just barely handle the weight. So with this in mind why would they make a unit that can safely carry full gray, waste and fresh water tanks. It would immediately overmax the tires, frame, and axles. So to avoid that situation they don't design the tanks to be hauled full and they tell you to not do it. Now we never travel with full tanks wither because it makes no sense to carry that weight if you don't have to. But I would not be afraid to do so if circumstances presented themselves. You are leaving home for a week of remote camping. So you fill up before leaving home with 40 gallons of fresh water. You decide to carry an extra 20 gallons of fresh water in containers in your pick-up. Now since you can't add more water you will still only have 30 gallons of gray and maybe 30 gallons of waste to carry out.
Realistically most of us don't ever camp like that but you get my point. If I did that in a MH I would not hesitate to carry all that water out. I can see my 45 gallon fresh water tank. It is setting on a level full platform in a heated compartment. It won't freeze and it won't sag.

You can't fix stupid but you can design correctly. The TT industry has gotten away with lousy construction for years and unless people either complain loudly or stop buying them they will continue.


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