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Old 01-15-2018, 05:14 PM   #1
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Help answer question on Newmar Holding tanks

I am considering purchasing a DS.
I am wanting to know where the holding tanks on a DS 4369 coach are located?
I would like to see a diagram or photo of where exactly these tanks are located in relationship to all relative controls and compartment.

Thanks in advance.
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Old 01-15-2018, 06:23 PM   #2
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I don't have a diagram, but the holding tanks are located at about the mid-point of the coach, front to back and side to side. Basically, they are behind the water bay and the compartment with the pegboard.

TJ
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Old 01-15-2018, 07:30 PM   #3
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Correct, they are behind the pegboard
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Old 01-15-2018, 08:28 PM   #4
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A couple of shots taken during construction.

The controls are loacated in what many refer to as the “Wet Bay”. It is on the driver’s side...just ahead of the rear main axle. Easily seen in the photo due to the bright white color of the panels used.

Located behind the control panel are the three tanks. The other photo, taken from the passenger side...best illustrate the tank layout. The translucent white tank, mounted on the floor of the bay, is the freshwater tank. Above the fresh water tank..are two black opaque tanks. The smaller one toward the front of the coach is the black water tank...and the other is the grey water tank. The handles that open and close the blade valves are colored black and grey respectively...and Newmar sticks a label plaque above the handles to clearly mark which handle goes to which tank.

The passenger side showing the tanks are covered by a pegboard with carpeting on the back...or in some installations they install the panel with the carpet side out. Some units have an outdoor tv mounted in the bay. Once the panel is in place...there isn’t much room left in that bay,,,,but it’s a handy place to put some tools or spare parts. You’ll hear it refered to as the “pegboard bay”
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Old 01-15-2018, 08:41 PM   #5
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Uggg, something seems wrong about having the black tank over the fresh water tank.
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Old 01-15-2018, 09:01 PM   #6
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I agree with tnedator. Bad juju.
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Old 01-15-2018, 09:30 PM   #7
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Quote:
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I agree with tnedator. Bad juju.
Let's just hope there's no dripping juju...
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Old 01-16-2018, 04:39 AM   #8
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Quote:
Originally Posted by tnedator View Post
Uggg, something seems wrong about having the black tank over the fresh water tank.
Well...at least you know where to look should your drinking water take on a cloudy appearance or funny taste

It will at least make you think twice about overfilling your black tank

I guess you could swap out heads and install composting toilets...move the fresh tank up, and install a huge grey tank below it. Wonder how many days you could dry camp with that arrangement??
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Old 01-16-2018, 09:31 PM   #9
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The fresh water tank could be submerged with no issues if the hoses are secured and the vent is in the correct position.

I am sure the waste tanks are on top to make routing of the waste lines straight into their tank. The waste plumbing always gets the priority as it's hard to get stuff to go uphill (without motors et al that add to failures).

Ok, back to the yolks.
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Old 01-17-2018, 11:09 AM   #10
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Kind of a silly comment. Would you rather the water tank sit atop the two waste tanks exerting 800 pounds of pressure. These aren't gassers with limited tank space, where they have to use odd shape tanks and shove them in dead spots. Most DP's are done exactly like this. Monaco did theirs the same way. Apparently, this design has worked well, WITHOUT ISSUE, for probably 30 years.

Even if the black tank were to leak, how would it enter the water tank?
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Old 01-17-2018, 11:13 AM   #11
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Same setup as our '00 and '02 DSDP's had. Never a problem.
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Old 01-17-2018, 06:37 PM   #12
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Kind of a silly comment. Would you rather the water tank sit atop the two waste tanks exerting 800 pounds of pressure. These aren't gassers with limited tank space, where they have to use odd shape tanks and shove them in dead spots. Most DP's are done exactly like this. Monaco did theirs the same way. Apparently, this design has worked well, WITHOUT ISSUE, for probably 30 years.

Even if the black tank were to leak, how would it enter the water tank?
It was tongue in cheek, aka a joke.
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