The new fuel filter will just fit inside the oval hole allowing it to be connected to the fuel pump.
Onan 4000 rv generator fuel pump.
From the three steps you performed it sure sounds like the pump is toast.
These seem to be from the late 1990s to the early 2000s.
When to test the fuel pump.
My rv uses a cummins onan fuel filter part 0149 2457.
Probably an obvious statement but since there is only one wire 12v positive on the pump the metal frame of the pump must be connected to the negative terminal on the battery for the pump to run.
Joebruns typically for an onan 5500 generator they mounted the fuel filter fuel pump combination on the underside of the motorhome directly below the generator.
Onan 4000 4kw gas rv cummins generator electric fuel pump carbole petrol gas diesel fuel transfer pumps for airtex e11007 a029f889 149 2311 149 2311 02 149 2311 01 149231101 e11007 4 4 out of 5 stars 30.
Onan fuel pump airtex e11007 onan fuel filter onan air filter 24 inches of fuel line 1 4 inch inside diameter id teflon plumbers tape fuel hose clamps testing the fuel line some lazy daze rvs have had a fuel line issue.
I put a small amount of permatex high temperature thread sealant at the base of the threads on the new fuel filter.
That s when i tested the fuel.
The fuel line connects diretly into th fuel filter which can be screwed off of the fuel pump similar to how i show in this article.
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I started up the generator and waited for it to die.
So i decided to do the fuel pump test just after the generator dies.
That was my plan.
You should check your rv s manual for the exact part numbers needed for your specific onan generator.
I suspected that the fuel pump would function just fine if tested when the generator is cooled down.
Sure enough it died after about 20 minutes.
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Onan 4000 generator fuel pump replacement and diagnosis.
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