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Old 08-17-2015, 08:57 AM   #1
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Do I have a plumbing leak?

Hello gang.

2006 Winnebago Class C.

Our water pump cycles for about 1/2 second every 5-10 minutes. We have looked where we can, but can't seem to find a leak. We have had this unit about three months, but it seems to have started a couple of weeks ago.

A week ago I did determine that the shower faucet connection had a leak at the connection and I replaced the assembly. Seemed dry as a bone but the pump burp still happens, but less frequently.

Can the water pump bleed within itself and reduce pressure?

Looking for suggestions.

Thanks.
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Old 08-17-2015, 09:19 AM   #2
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Quote:
Originally Posted by MurphyMan View Post
Hello gang.



2006 Winnebago Class C.



Our water pump cycles for about 1/2 second every 5-10 minutes. We have looked where we can, but can't seem to find a leak. We have had this unit about three months, but it seems to have started a couple of weeks ago.



A week ago I did determine that the shower faucet connection had a leak at the connection and I replaced the assembly. Seemed dry as a bone but the pump burp still happens, but less frequently.



Can the water pump bleed within itself and reduce pressure?



Looking for suggestions.



Thanks.

There is a check valve in the water pump that prevents water from back feeding into the freshwater tank. This valve can fail or just get some debris in it which keeps it from seating.


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Old 08-17-2015, 09:34 AM   #3
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Steve is probably right, this is the most common cause of the pump cycling. If you have a way to shut off the water behind the pump to eliminate any leaks upstream you can try that first. If it turns out to be the pump, try to get the make and model number, most RV dealers stock repair kits. The swap is easy and takes no more than 10 minutes once you have the pump out.
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Old 08-17-2015, 08:04 PM   #4
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The check valves are rubber flappers. All it takes is a bit of grit and they will behave this way. Disassemble the pump and clear rubber flappers of any grit.
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Old 08-18-2015, 05:24 PM   #5
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Sounds like some good tips. I'll check out the check valve in the pump.
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Old 08-18-2015, 06:44 PM   #6
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It could also be the check valve at the city water fill port where you screw the hose on. See if water is very slowly leaking out the city water fill. You could also cap that fill off and see if your problem corrects itself. Also move the tank fill valve on and off several times to see it some small dirt particles may have gotten stuck in it.
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