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  1. #1
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    Aug 2012
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    Fort Collins, Colorado
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    John Deere 750

    Default small hole in diesel cap

    I have a JD750 compact tractor that has a small hole in the diesel fuel tank cap (The cap is the plastic fuel guage.) Any ideas how to patch the hole? Will epoxy be immune to the diesel fumes in the tank?


    Thanks for your guidance.

  2. #2
    Silver Member paulemar's Avatar
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    May 2011
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    Pittsburgh, PA
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    Kubota BX25, 60" MMM, 3 point hitch

    Default

    You're not talking about a vent hole are you? As fuel is used there must be a way to get air into the tank to replace the fuel. If it's not a factory vent hole, perhaps it was put there because the original vent on the cap failed at some point. Someone who has this model will be able to tell you what should be there.
    BX25, "60" MMM, 3 point hitch, Brinly 12" cat 0 1 bottom plow, TSC Countyline carry all, Kubota ballast box, 4X4 Loyal drag harrow, BXpanded Piranha tooth bar, Bro-Tek rear skid plate, Bro-Tek wheel spacers, Bro-Tek backhoe ripper tooth. Kubota BX2763A front plow, Phoenix T4 48" rototiller, Harbor Freight Quick Hitch, BXpanded Quick-on Work light Kit, Mark Hodge stabilizers.

  3. #3
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    Fort Collins, Colorado
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    John Deere 750

    Default Re: small hole in diesel cap

    The fuel cap has a plastic window (1/4 in by 1 inch long) with an arrow showing how full the tank is. It's not a design feature, just a small chipped out piece. The hole is 1/8 in x 1/16 inch. I have it covered with plastic to keep dirt and rain water out of the tank. I think I just need to put a small drop of epoxy to seal the hole, but am trying to determine if the fuel fumes would react with the epoxy.

    Thanks

  4. #4
    Elite Member JasG's Avatar
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    Jan 2004
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    3,204
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    CNY
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    Kubota L3240

    Default Re: small hole in diesel cap

    Quote Originally Posted by rmroper View Post
    I have a JD750 compact tractor that has a small hole in the diesel fuel tank cap (The cap is the plastic fuel guage.) Any ideas how to patch the hole? Will epoxy be immune to the diesel fumes in the tank?


    Thanks for your guidance.
    There are epoxies that will hold up, you just have to find one. Most epoxy compounds once the chemical bond is done won't react with fuel or gas.
    “Government is like a baby. An alimentary canal with a big appetite at one end and no sense of responsibility at the other."


    Ronald Reagan

  5. #5
    Member
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    Aug 2012
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    Fort Collins, Colorado
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    John Deere 750

    Default Re: small hole in diesel cap

    thank you, I will head to the hardware store.

  6. #6
    Super Star Member
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    Jul 2011
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    14,436
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    Yanceyville, North Carolina
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    Kubota L4400

    Default Re: small hole in diesel cap

    Is a new replacement gas cap for your make and model available? Is a new one expensive? Just my thoughts.
    The PUPIL who does not surpass his Master, fails his Master.

  7. #7
    Member
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    Fort Collins, Colorado
    Tractor
    John Deere 750

    Default Re: small hole in diesel cap

    Fuel caps are hard to come by for this model and cost around $100. I just hate to spend that much on a new fuel cap due to a small hole. I have already replaced it once.

    I do appreciate your thoughts.

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