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04 /25/ 24, 3:51pmLogin ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 12345[6]78910 ]
Subject: Water system not priming


Author:
Steve O
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Date Posted: 01/ 11/ 04, 10:27pm

I have replaced the Jabsco water pump in my 87 35FC and I still cannot get water out of the faucets. I cant figure out if its a priming problem or if a check valve is messed up? Shore water works fine but there is no pressure past the water purifier, which by the way needs replacing too, does anyone know where to get one of these?
Wondering if my water lines are clogged up? sounds unlikely but I have run out of ideas.
Thanks.

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Replies:
[> Subject: water system


Author:
Harvey Lawrence
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Date Posted: 01/ 12/ 04, 7:53am

You are correct in assuming the filter is suspect. start by changing that first or by passing it entirley, on a temporary basis. You probably get shore water through the clogged filters because it is under greater pressure than the pumped water from your tank. If after replacing the filters your system does not work as it should then continue on to the check valve or possibly the pressure control unit sometimes in theline.Anyway check the simple stuff first.
Harvey

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[> [> Subject: Re: water system


Author:
Lucas Willemse
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Date Posted: 04/ 5/ 04, 8:50am

I had the same problem on my 1980 FC35. The pump would run but would take a long time to build up pressure and make a lot of noise while running. I proved it was a supply line problem by using a small hose to the pump from a bucket, it worked fine. I then tried to blow out the line to the tank with air, a slight improvement but no cure. Upon inspection I found a galvanized coupling on the output on the tank going forward to the pump. I removed the fitting and found it completely clogged with rust. Changed the fitting to a brass coupling and cured the problem, now the pump works great and is so quiet is is hard to hear it run. I found one more of these galvanized couplings in the output of the pump and it had also started to build up rust, changed them both.

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[> Subject: Re: Water system not priming


Author:
L. Longcrier
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Date Posted: 01/ 16/ 04, 1:12pm

I had the same problem when I first got my 84. The water fill inlet switch was not closing the bypass valve. I rebuilt the valve and installed a new switch. (Problem Solved).

L Longcrier

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[> Subject: Re: Water system not priming


Author:
Bob Dilks
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Date Posted: 01/ 25/ 04, 7:05am

You can purchase a new water purifier by calling Pure Water Enterprises at 318/439-4570. If by some chance you purifier is by Astro Pure call 954/832-0630. You can also call Blue Bird parts at 800/495-7787

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[> Subject: Re: Water system not priming


Author:
Lucas Wwillemse
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Date Posted: 02/ 10/ 04, 10:17am

Check the hose inlet to fill the tank, unless the cap is tight and sealed with a good washer the pump will suck air instead of water and will not prime.

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[> [> Subject: Re: Water system not priming


Author:
Jeff Miller
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Date Posted: 02/ 11/ 04, 9:04am

If the pump is pulling water from the hose inlet then you have other problems, possibly the (sporlan) fill valve is not shutting off. It should pump fine with no cap on the hose inlet.

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[> Subject: Re: Water system not priming


Author:
Richard Hayden
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Date Posted: 03/ 29/ 04, 4:49pm

I had the same problem on my '81 FC. Both the Sporlan valve and the hot water tank drain valve were bad. Actually, both of there valves have the same effect and neither can be in open position when the pump is to provide water because the pump is simply returning water to the tank. Both of these valves are expensive from BB. I solved my problem by replacing the hot water valve with a ball valve and did away with the Sporlan. Naturally, the fill switch no longer works w/o the Sporlan so I added a short brass rod from the ball valve handle through a small hole I drilled to the utility compartment.

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