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Old 11-09-2014, 02:40 PM   #15
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Water Pumping Problem

You could always open the fresh water tank fill and drain then blow air into the suction line.

You have to flush the lines without the aerators on to clean it correctly. Or it will only clog again.


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Old 11-09-2014, 07:18 PM   #16
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1986 34' Limited
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Glad you found the plugged aerator. It was a good suggestion. One less problem to worry about.

Your testing confirms there is an open inlet line somewhere. The pump is sucking air or sucking a plugged line. It works okay drawing from a alternate reservoir. If you put your thumb over the temporary inlet hose, you should feel the vacuum. If you plug the temporary inlet, the pump will work hard drawing max vacuum. If you leave the temporary inlet open, the pump will just sit and run on idle. See if the pump noise you here when doing these two experiments is similar to the noise you hear with the pump hooked to the fresh water inlet line. Plugged or open line.

I think you're pretty confident you could put a five gallon bucket under your trailer, hook your pump inlet to it, and you would pump nice flow to all of your faucets. We gotta figure out what's wrong with the pump inlet line.

I'm no help here as I don't know how the tank is made.

David
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Old 11-09-2014, 08:30 PM   #17
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The strangest one that I ever ran into was on a 71 Caravel which would not pick up water with a new pump. I could see bubbles in the intake strainer so air had to be coming in somewhere. I finally determined that the hose itself was leaking air in under suction, but no water would leak out given the small amount of pressure on it from the bottom to the top of the tank. When I replaced the intake hose (which was not easy to do) the problem went away. So, the original hose looked good but was rotten and let air in.
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Old 11-09-2014, 08:43 PM   #18
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Did you by chance install a winterizer bypass kit? My pump stop working after I did that on our 22' sport, turns out that the length between pump and FW tank could be no longer than 6 feet and that extra 6 inches from adding the kit was making it to long. When I removed the kit the pump worked fine.

Gary
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Old 11-09-2014, 08:54 PM   #19
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Ok, thanks for the input. Will keep working it tomorrow.
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Old 11-09-2014, 09:10 PM   #20
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No, didn't install a bypass kit, but thanks for the suggestion. Thinking it's the intake hose.
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Old 11-10-2014, 10:49 AM   #21
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Update 4

4th Update,

Problem definitely seems to be a crack in the input line. This vintage trailer used the hard plastic lines with brass 90 degree fittings that are held in place with what appears to be a steel band. I see no way remove those bands.....any ideas out there?
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Old 11-10-2014, 11:20 AM   #22
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Quote:
Originally Posted by SueYour View Post
4th Update,

Problem definitely seems to be a crack in the input line. This vintage trailer used the hard plastic lines with brass 90 degree fittings that are held in place with what appears to be a steel band. I see no way remove those bands.....any ideas out there?

Ah, gray polybutyl lines I bet. I use a Dremel tool with a cut off disk to cut the bands. The bands are generally a copper alloy material but look dark like steel.
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Old 11-10-2014, 04:27 PM   #23
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My 86 has polybutyl lines also. There are PEX to Poly fittings that you might find easier to make the inlet line repair. I use them so I don't have to buy two different types of crimping tools. They also make "shark bite" type "push to connect" or PTC fittings that seal on the OD of the poly to PEX tubes. I have used those also. See one on the left in this crummy photo. It has been there three years and about 10,000 miles.

David
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Old 11-10-2014, 07:43 PM   #24
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Update #5: Finally able to replace the line from the FW tank to the pump with no leaks! Water system working somewhat. Very pulsating water stream from facets and pump does not shut off but it looks like no air leak up to the filter. After the pump is turned off the water on the input side retracts to the FW tank. Still need to eliminate filter because running antifreeze thru the pump seems really good. Hopefully I'll have a final update in two days. Thanks to EVERYONE for your help! Airstreamers are great!

Jim (using my wife's acct)
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Old 11-10-2014, 08:14 PM   #25
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Heck, don't all us DHs use the wife's account?

David
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Old 11-11-2014, 12:59 PM   #26
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Jim I followed this for a while. Let me know if you need some help. I have the same trailer down in Salida. Maybe we could start a support group!
Bob


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Old 11-20-2014, 04:39 PM   #27
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Bob,

Thanks for the offer. It would be great to get together sometime and commiserate.

Jim
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Old 11-20-2014, 04:41 PM   #28
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Update #6

After changing pump, accumulator, input line, and output line, problem appears to be resolved. Thanks to the great support and input!!

Jim
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