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Jack(Ky) 
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Joined: 12 Sep 2009
Location: Ky
Points: 1153
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 Topic: 7020 fuel draining back.
Posted: 29 Sep 2015 at 9:35pm |
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If my 7020 sits for several days the fuel drains out of the lines and you have to turn on the key and run the pump and bleed it out. I thought I had it fixed by putting on a new fuel line but after sitting for about a month it did it again. Is it supposed to have a check valve or something to keep it from doing this. Thanks JP
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'59 D14 '68 170 Diesel '81 7020 40 All Crop
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Auntwayne
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Joined: 23 Apr 2011
Location: Edwardsville Il
Points: 1589
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Posted: 29 Sep 2015 at 10:46pm |
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Your fuel lines themselves would not be draining, it would be the end fittings......or....
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injpumpEd
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Joined: 13 Sep 2009
Location: Walnut IL
Points: 5097
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Posted: 30 Sep 2015 at 7:53am |
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So it has an electric fuel pump? Is the hand primer still in the system? The hand primer assembly has 2 check valves in it, and they like to catch junk and get held open.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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Jack(Ky)
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Joined: 12 Sep 2009
Location: Ky
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Posted: 30 Sep 2015 at 8:25pm |
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No it is a late model. It has 2 spin on fuel filters and an electric pump. I think the hand primers were phased out by then.JP
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'59 D14 '68 170 Diesel '81 7020 40 All Crop
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victoryallis
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Joined: 15 Apr 2010
Location: Ludington mi
Points: 2878
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Posted: 30 Sep 2015 at 9:28pm |
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My 7060 did that change all lines from the tank to the filter problem gone you are leaking air in.
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8030 and 8050MFWD, 7580, 3 6080's, 160, 7060, 175, heirloom D17, Deere 8760
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