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Old 08-31-2017, 11:49 PM   #1
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01 tradewinds 7390 fuel filler hose?

I topped off my 01 7390 LTC with diesel and got a call from the landowner where I parked it about 12 hours later telling me I had a fuel leak. Found a 2nd fuel filler hose on the drivers side (the main fuel filler is on the passenger side just aft of the door) right above the propane tank with a steady drip from a pinhole on the bottom side of the hose about halfway between the tank and the fill
End. Has a fuel cap and everything. I have never even noticed it. 1) what is this for and 2) why would a fuel filler hose above the tank be leaking when it is parked? Too much pressure? Did I overfill the gas tank? Has anyone ever had to replace this -- the part number would be huge. It's fairly accessible
From the propane tank compartment.
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Old 09-01-2017, 12:06 AM   #2
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Sounds like the chassis was produced to have fillers on both sides and National didn't or couldn't ( due to slide location or other floor plan problems) locate the filler with a fuel door.
If it's straight hose , NAPA , should be able to supply a fuel rated hose the size you need , otherwise , it would be a chassis manufacturer item if it's molded.
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Old 09-07-2017, 07:43 AM   #3
KEH
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Had the same problem with mine. I replaced the hose last month. It is a left side fuel fill location. When you fill the tank to the max, there will be fuel in the filler hose until tank level goes down.
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