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Old 04-13-2013, 03:44 PM   #1
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1970 27' Overlander
Crowley , Texas
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70 overlander plumbing ?

Whenever I hook up fresh water supply it drips from the rear pan area and a small hole at the side of the waste tank. I have the tank hooked to a portable grey tank and its draining to It but I've got a leak somewhere antone have an idea or plumbing diagrams. I have to shut water on and off to use
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Old 04-13-2013, 04:20 PM   #2
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1964 26' Overlander
1978 Argosy Minuet 6.0 Metre
Anna , Illinois
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70 overlander plumbing ?

Greetings skgru70!

Quote:
Originally Posted by skgru70 View Post
Whenever I hook up fresh water supply it drips from the rear pan area and a small hole at the side of the waste tank. I have the tank hooked to a portable grey tank and its draining to It but I've got a leak somewhere antone have an idea or plumbing diagrams. I have to shut water on and off to use
The most common issue that causes a drip or slow trickle (in worse case scenario a constant stream), is a pressure control/relief valve that is frozen open or partially open (often a piece of grit, sediment, or lime deposits will lodge and hold this valve open). The valve looks something like a mushroom with a small adjusting screw on the top . . . it was designed such that it could be adjusted to set the maximum water pressue allowed into your trailer. It is typically just inside the rear of your trailer about 8 to 15 inches from the actual hose connection point. These valves are typically available from the big box stores in the plumbing department . . . a plumbing supply house will likely have a modern duplicate for your existing valve.

The photo below illustrates a valve very similar to what was likely on your Airstream when it was delivered new.


Good luck with your project!

Kevin

P.S.: When this valve fails it is also possible for water to flow out of the hose connection when you are using water from your fresh water tank . . . at least this is true for the 1960s era coaches . . . there may be a check valve to prevent this in your 1970s era coach.
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1964 Overlander International/1999 GMC K2500 Suburban (7400 VORTEC/4.11 Differentials)
1978 Argosy Minuet 6.0 Metre/1975 Cadillac Eldorado Convertible (8.2 Liter V8/2.70 Final Drive)
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Old 04-13-2013, 04:29 PM   #3
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1970 27' Overlander
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Thanks I sawthe regulator thats on the replacement list now
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Old 04-13-2013, 04:39 PM   #4
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1970 27' Overlander
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The regulator screw ? Which way loawers pressure screwed in or out
Thx
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Old 04-13-2013, 07:34 PM   #5
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1964 26' Overlander
1978 Argosy Minuet 6.0 Metre
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Greetings skgru70!

Quote:
Originally Posted by skgru70 View Post
The regulator screw ? Which way loawers pressure screwed in or out
Thx
I am not absolutely certain as it has been quite some time since I last checked the one in my Overlander. If I remember correctly, there is a double-arrow with a + at one end and a - on the other . . . this is based on a very tenuous recollection, but I believe "tightening" reduces the pressure allowed and "loosening" increases the pressure allowed.

Good luck with your project!

Kevin

P.S.: Something I forgot to mention in my earlier post about the strang things these valves can do when they fail is that it is also possible for the valve to fail in such a way that it won't allow any water to enter from the city connection . . . that is exactly what happened on my 1978 Minuet . . . when that happened, I completed that season's travels utilizing my fresh water tank continuously as that valve is virtually hidden behind/under the Minuet's gray water tank at the bottom of a wardrobe closet.
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1964 Overlander International/1999 GMC K2500 Suburban (7400 VORTEC/4.11 Differentials)
1978 Argosy Minuet 6.0 Metre/1975 Cadillac Eldorado Convertible (8.2 Liter V8/2.70 Final Drive)
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