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Water Pump Coincidence?
My Vantare has two 12v fresh water pumps. It originally came with two but by the time I bought the coach things had been rearranged. There was one Flojet, one Shurflo and the plumbing was kind of haphazard.
I replaced one within a few months with a Flojet single speed water pump. When the second one went out I replaced it with a variable speed Flojet VSD 4.5. I also straightened up some of the funky plumbing then.
After nine years the VSD 4.5 began leaking at the pump head. I ordered the pump that replaced that one. I was going to keep the old pump, see if I could rebuild it and install it where the single speed pump is.
I had not got around to making the swap when one after noon neither pump would do anything at all. I mean they would not run at all. I thought for sure there was a blown fuse or something. When I checked, both had power when their respective switches were on.
I installed the new pump and it works fine. I have not replaced the single speed pump yet but it will not work.
Any idea what would make both pumps quit at one time? The leaking pump ran fine but leaked a few drops. The single speed pump was working perfectly. The next minute both would not run at all but had power and good ground.
Coincidence?
Davy
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6 Replies
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Davy, This is just me shooting from the lip, but anytime you run a pair of anything at the same time you often fail to notice when the first one quits. Is it possible one had already quit and now when the second quits it appears both quit simultaneously?
That does not necessarily hold true for plane engines.
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Jon wrote: That does not necessarily hold true for plane engines.
Unless the reason for the simultaneous failure is the same on both engines.
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It is possible, Jon.
I had wondered about using one all the time an allowing the seals to dry out on the unused one. We developed a routine. We usually turn on the single speed pump for hand washing, dish washing and the like. We turn on the variable speed for showers. Both pumps had been used that day.
Davy
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That blows my theory to pieces Davy. Can it be bad luck?
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That is basically what Jeff said. I have had a run of it lately.
They have both been installed nearly 10 years and only a 2-3 months apart.
Still seems weird to me.
Davy
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That is weird. It would be interesting to know the failure modes of the two pumps. Are you at Jeff’s now?
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