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Old 09-01-2013, 09:25 PM   #29
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I've had an issue with the water pump 2x....the first issue within the first two weeks of owning our Interstate 2013.
Replaced the pump.... worked fine for 5 months and now, the pump is on and the water faucets and toilet don't have water. We never leave the pump on (so we didn't burn it out) the fresh water tank says full.
The issue first came about when I went to empty the gray water after emptying the black water and the gray water wouldn't pump out. So...it has to be the pump again... hmmmm
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Old 09-01-2013, 09:37 PM   #30
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".......and now, the pump is on and the water faucets and toilet don't have water. We never leave the pump on (so we didn't burn it out) the fresh water tank says full.
The issue first came about when I went to empty the gray water after emptying the black water and the gray water wouldn't pump out. So...it has to be the pump again... hmmmm
Suru,

The pump that supplies water to the faucets and toilet (the water pump) is totally unrelated to the pump (the Macerator) that pumps out the gray and black tanks. There is nothing common between them. They are even (at least on my Interstate) on separate fuses; water pump is on Ckt. 3 and the Macerator is on Ckt. 9 which has no other loads. You have two distinctly different problems. IMHO.
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Old 09-02-2013, 12:28 AM   #31
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You can prime the water pump by wrapping a rag around an air hose and sticking it in the fill part. Turn the water pump on and leave one of the faucets on. Of course there has to be some water in the freshwater tank for this to work.
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Old 09-02-2013, 01:07 AM   #32
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You can also prime the pump by disconnecting the discharge hose at the pump. Then start the pump, when the water comes out, shut the pump off and reconnect the discharge hose.
The pump may be sucking air from a leak on the intake.
There is also the possibility that water sloshing in the FW tank is forcing air into the intake line to the pump. With air trapped in the intake, the pump will not prime. Since it is designed to pump water, not air.
This happened too frequently in my old coach. And only when the FW tank is down to half full or less. I installed a 2 way valve.
It simulates the disconnecting of the hose when I switch the valve from one position to the other. So now it's just a matter of switching the valve to the second position and back again to the first and things are back to normal.
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Old 09-02-2013, 08:40 AM   #33
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Suru,

I found your question in the General Motorhome Topics not here. Don't know how that happened??

Your post:
"Re: my Interstate 2013
Thankyou for helping Re: the fuses for water pump and Macerator. Sorry to be ignorant ... Are the fuses at the front drivers seat or are they somewhere else?
Appreciate the info!
Suru"

The location of all of the DC fuses including these depends on whether you have a Twin model or a Lounge model. In the Twin, the fuse panel is located under the roadside bed. In the Lounge model I believe the panel is located under the rear lounge. This is all documented in the Owners Manual; the electrical information is in Section H.

Good luck,
Wayne
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Old 09-02-2013, 05:11 PM   #34
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Quote:
Originally Posted by wayneskid View Post
Suru,

I found your question in the General Motorhome Topics not here. Don't know how that happened??

Your post:
"Re: my Interstate 2013
Thankyou for helping Re: the fuses for water pump and Macerator. Sorry to be ignorant ... Are the fuses at the front drivers seat or are they somewhere else?
Appreciate the info!
Suru"

The location of all of the DC fuses including these depends on whether you have a Twin model or a Lounge model. In the Twin, the fuse panel is located under the roadside bed. In the Lounge model I believe the panel is located under the rear lounge. This is all documented in the Owners Manual; the electrical information is in Section H.

Good luck,
Wayne
The fuses under the driver's seat are explained in the Sprinter operator's manual; they're Mercedes equipment, not Airstream.
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Old 09-14-2013, 04:54 PM   #35
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The fuses under the driver's seat are explained in the Sprinter operator's manual; they're Mercedes equipment, not Airstream.
Thanks Wayne!
It worked ! You helped me fix two things! Blown fuses
Now the water pressure is low... Another discussion
Thanks again
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Old 06-02-2015, 09:19 AM   #36
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what drawer did they go thru to access pump? i'm not getting good flow.. I think my screen is clogged. Thanks, HT
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Old 06-02-2015, 09:53 AM   #37
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what drawer did they go thru to access pump? i'm not getting good flow.. I think my screen is clogged. Thanks, HT
In an Interstate there's only one bottom drawer; the pump is right over the water tank and bolted to the floor.
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