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  1. #1
    New Member
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    Feb 2013
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    5
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    schoharie ny
    Tractor
    johndeere 790 compact

    Default 790 JOHNDEERE

    Bottom radiator hose stays cold top hose is hot tractor does not overheat???any ideas thanks Dee

  2. #2
    Elite Member
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    Jul 2006
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    4,409
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    Northwest, WA

    Default Re: 790 JOHNDEERE

    ,
    Quote Originally Posted by DEEMEESE View Post
    Bottom radiator hose stays cold, top hose is hot, tractor does not overheat???, any ideas???, thanks Dee
    Sounds like it isn't warmed up enough to open the thermostat.

    Are you having any problems with it ?
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  3. #3
    Gold Member pedalstomper78's Avatar
    Join Date
    Aug 2010
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    450
    Location
    Ohio
    Tractor
    Case/IH DX33

    Default Re: 790 JOHNDEERE

    Radiator getting warm also? What is the gauge on the tractor saying?
    The forums are a great place to find information....but also a great place to find speculation. Only you can determine the real problems with your tractor. We're here to help you find the correct way to do it.

  4. #4
    New Member
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    Feb 2013
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    5
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    schoharie ny
    Tractor
    johndeere 790 compact

    Default Re: 790 JOHNDEERE

    Hey thanks No problems ran it for a half hour or more loadin firewood,,,felt the hose cold on the bottom warm on top hose..Reason i checked i had to add alittle antifreeze to the overflow resevoir ??but no overheating problems ?/

  5. #5
    New Member
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    Feb 2013
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    5
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    schoharie ny
    Tractor
    johndeere 790 compact

    Default Re: 790 JOHNDEERE

    Temp gauge stay in the green way down in the green never gets even halfway up the guage

  6. #6
    Elite Member
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    Dec 2002
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    2,988
    Location
    Foster, RI
    Tractor
    Mahindra 3016

    Default Re: 790 JOHNDEERE

    This is quite common. I believe the JD stat opens at 160*. I changed my stat recently and my bottom hose is still cool to the touch. My top hose isn't that hot either.

  7. #7
    New Member
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    Feb 2013
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    schoharie ny
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    johndeere 790 compact

    Default Re: 790 JOHNDEERE

    Thanks may be that ,,,

  8. #8
    Gold Member pedalstomper78's Avatar
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    Aug 2010
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    450
    Location
    Ohio
    Tractor
    Case/IH DX33

    Default Re: 790 JOHNDEERE

    I would go with the tractor isn't running that hard and is just using a wee small bit of the capacity of the radiator. Run it and have fun. The only way that I would be concerned was if it was heating up on ya.
    The forums are a great place to find information....but also a great place to find speculation. Only you can determine the real problems with your tractor. We're here to help you find the correct way to do it.

  9. #9
    Veteran Member crashz's Avatar
    Join Date
    May 2005
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    1,024
    Location
    Eastern MA & Upstate NY
    Tractor
    John Deere 770, Bobcat 753

    Default

    My 770 does the same thing. I replaced the thermostat, coolant, temp sensor and hoses. Still, it only creeps up to about 1/4 of the way when working in the summer.
    I've had a wonderful evening, but this wasn't it. ~ Groucho Marx

  10. #10
    Veteran Member kebo's Avatar
    Join Date
    May 2006
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    2,320
    Location
    Lexington, SC
    Tractor
    2001 John Deere 790 4x4, bar tires

    Default Re: 790 JOHNDEERE

    Welcome to the forum Dee.

    Never had any troubles with my 790 in the summer, it runs just fine!! Now the operator has nearly croaked a time or two in the 98 deg weather lol. To be more serious, I've never felt the hoses on mine after running it a while, but now you got me wondering and I will check it the next time I've had it running for a while.

    Btw, in case you aren't aware, there's a simple little trick you can do to the 790's to increase the hydraulic pressure. The hydraulic relief valve is set to 2000psi at the factory, but it can be safely increased to 2500 psi and give you a little more lift capacity on the loader (if yours has one) and on the three pt lift too. I did it to mine, and it makes a difference. If you're interested, there are several threads on it and you can use the search function and you should be able to find some of them. Basically it involves adding some shims that you can get at your JD dealer for about $10 bucks.
    Nothing could be finer than riding my JD790 in South Carolina!!

    2001 John Deere 790 4x4 with Model 70 FEL, 5ft International World Agritech bush hog, 5ft Wallberg BB, 5ft Frontier disc harrow, 5ft King Kutter II Rototiller, 5ft Cultipacker, 5ft Sitrex finish mower, Leinbach PHD with 9" & 12" augers, Leinbach middlebuster, Leinbach #11 Field Cultivator, boom pole, custom 3pt handi-hitch, clamp on bucket forks, Pat's Easy Change.

    Nothing runs like a Deere, or smells like a John....

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