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Old 08-11-2016, 01:03 PM   #1
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1977 31' Sovereign
Tallmadge , Ohio
Join Date: Jul 2016
Posts: 20
Black and Gray Tanks, Valves, etc 1977 Sovereign Center Bath

I've recently bought a 1977 Sovereign 31ft Center Bath. Being a newbie, I didn't know where everything was located. The PO used the trailer as a home and later as an extension onto an actual house. She had it hooked up to city water and sewer. What I have noticed today is that the entire waste holding tank section (blank & gray tanks, valves, etc.) is missing. I will have to rebuild the entire section. Has anyone done this? I need to put together all of the parts I'll need and how they should attach, etc. Any pictures or diagrams that anyone has would be most helpful. (I should purchase that $60 service manual.)


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Old 08-11-2016, 04:39 PM   #2
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1977 31' Sovereign
Tallmadge , Ohio
Join Date: Jul 2016
Posts: 20
Correction. Only the black tank and valves and such are missing. The gray tank is there at least.

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Old 08-11-2016, 05:02 PM   #3
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1973 31' Excella 500
Vicksburg , Mississippi
Join Date: Jul 2016
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Is your grey tank located directly behind axles with fresh water tank ahead of axles?
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Old 08-11-2016, 07:53 PM   #4
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1977 31' Sovereign
2005 30' Safari
North Port , Florida
Join Date: Mar 2007
Posts: 190
I would suggest a manual but if you PM your email I can scan some pages to you. My 77 is a rear bath but I'm actually in the process of changing to center bath.
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Old 08-11-2016, 08:33 PM   #5
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2000 25' Safari
1999 34' Excella
Davidson County, NC , Highlands County, FL
Join Date: Aug 2006
Posts: 2,307
You can download an Owners Manual directly from Airstream.
From here:

If you could post a photo or two of what is left, I'm sure someone will tell you how to repair it.
2014 Silverado 1500 Crew Cab 5.3L maximum trailering package (yes, I'm towing the 34')
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Old 08-12-2016, 08:40 AM   #6
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1974 Argosy 26
Morrill , Nebraska
Join Date: Nov 2009
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Sounds like the PO installed a standard household toilet.
You are in for some work restoring it to the original system.
Good Luck

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