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  1. #1
    Silver Member knightrider955's Avatar
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    Sep 2010
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    175
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    Lakeview, MI
    Tractor
    Long 560

    Default Diesel Tractor, Hot hot is too hot? Im a newbie

    I just got my first tractor. Its a Long 560 55hp diesel. The temp guage dont work so Im gonns put a new one on it. What temp is a normal temp for it to run at? And what temp is too hot? When it runs the water in the bottom of the radiator is always cool and the water in the top of the radiator is just warm. Mabe the thermostat isnt opening all the way?? Can I run it without a thermostat? Also it has a dummy light for low oil as pressure? Can I put a oil pressure guage on it? The motor in it is brand new (I have reciepts for all the parts) Is there a break in period I should follow? Im not sure the guy knew what he was doing but it does run good.
    Long 560, Quality Romanian built tractor that runs like a scalded dog.
    Oliver Super 77, Runs when it feels like it

  2. #2
    Gold Member
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    Nov 2004
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    414
    Location
    Sumner, Texas
    Tractor
    Cub Cadet 2145, Z-Force 48 and early Dixon

    Default Re: Diesel Tractor, Hot hot is too hot? Im a newbie

    I would think 180 to 200 would be normal. If it doesn't have a pressure cap on the radiator 212 would bee too hot.
    Doc

    JD 5045D - Ford 3000
    I live so far out in the boondocks that my TV runs on propane.

  3. #3
    Elite Member Car Doc's Avatar
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    Mar 2009
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    3,246
    Location
    Kansas
    Tractor
    YM3810D Yanmar

    Default Re: Diesel Tractor, Hot hot is too hot? Im a newbie

    The engine will or should run close to the thermostat temp (whatever the manufacturer recommends there) and it should always be run with one, engine wear and noise is accelerated by cool running you want heat in the engine.

    Diesels are notorious for not building heat very quickly so it may not even get to thermostat temp until its worked a little. hth

  4. #4
    Silver Member knightrider955's Avatar
    Join Date
    Sep 2010
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    175
    Location
    Lakeview, MI
    Tractor
    Long 560

    Default Re: Diesel Tractor, Hot hot is too hot? Im a newbie

    Well I pulled the upper radiator hose off right above the thermostat and started the tractor and let it idle for 15 minutes. Thermostst didnt open. So maybe its just cold blooded?? Its 65 degrees outside today. Im gonna still put a gauge in but maybe Im just worrying too much. I did see that while it was running, there was bubbling and diesel leaking around one of the injectors where it goes into the head. Maybe it needs a seal?? Any input would be helpful.
    Long 560, Quality Romanian built tractor that runs like a scalded dog.
    Oliver Super 77, Runs when it feels like it

  5. #5
    Super Member
    Join Date
    Feb 2006
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    8,629
    Location
    VA
    Tractor
    JD2010, Kubota3450,2550, Mahindra 7520 w FEL w Skid Steer QC w/Tilt Tatch, & BH, BX1500

    Default Re: Diesel Tractor, Hot hot is too hot? Im a newbie

    Quote Originally Posted by knightrider955 View Post
    Well I pulled the upper radiator hose off right above the thermostat and started the tractor and let it idle for 15 minutes. Thermostst didnt open. So maybe its just cold blooded?? Its 65 degrees outside today. Im gonna still put a gauge in but maybe Im just worrying too much. I did see that while it was running, there was bubbling and diesel leaking around one of the injectors where it goes into the head. Maybe it needs a seal?? Any input would be helpful.
    The engine will not warm up properly at idle, so the tstat not opening is not a surprise. After a couple minutes at medium idle start making it work some. Letting them run too cool is a "wet stack" situation leaving unburned fuel on cyl walls and in exhaust. The stuff remaining in the cyl can wash the cyl walls, dilute the oil, etc.
    larry
    This side of 40
    JD2010, Kubota L3450/FEL w SK QC, L2550 w FEL
    Mahindra 7520 [Pinky] /FEL w Skid Steer QC/w Tilt Tatch & BH, BX1500 [Mighty Mouse]
    IH37 Baler, CCM165 Drum Mower, JD Rake
    JD 127 bushog, Flail, SK Tilt Tatch , KK tiller, Rhino rear blade, Post driver, post auger, chipper, pallet fork, Grapple/Loader Buddy, Homemade Splitter/DC Welder

  6. #6
    Super Star Member
    Join Date
    Mar 2008
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    10,580
    Location
    Northern Fingerlakes region of NY, USA
    Tractor
    Kubota L3830GST, B7500HST, BX2660

    Default Re: Diesel Tractor, Hot hot is too hot? Im a newbie

    Quote Originally Posted by knightrider955 View Post
    Well I pulled the upper radiator hose off right above the thermostat and started the tractor and let it idle for 15 minutes. Thermostst didnt open. So maybe its just cold blooded?? Its 65 degrees outside today. Im gonna still put a gauge in but maybe Im just worrying too much. I did see that while it was running, there was bubbling and diesel leaking around one of the injectors where it goes into the head. Maybe it needs a seal?? Any input would be helpful.
    Pull the thermostat and drop it into a pot of boiling water. it should open right up. If not, you need a new thermostat.

    Aaron Z
    A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
    Robert Heinlein, Time Enough for Love

  7. #7
    Epic Contributor
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    jinman's Avatar
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    Feb 2001
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    Texas - Wise County - Sunset
    Tractor
    NHTC45D, NH LB75B, Ford Jubilee

    Default Re: Diesel Tractor, Hot hot is too hot? Im a newbie

    I can't add much to the very good advice you have already received, but I would like to say that I think every tractor owner should own an IR Thermometer. These things are so cheap and so useful that they will pay for themselves Quickly. They are handy anytime you want to measure surface temperature of almost anything. I even use mine to measure oil temperature in my turkey fryer. If you aim the laser dot just below your thermostat on your tractor, you will know exactly how hot the water jacket is. I also aim mine at the radiator bottom and top to see how efficiently it is working. For $20 for the cheap one or $30 for the more expensive one with higher range, they are a bargain. I would recommend the larger one because it uses a 9-volt battery that is a lot easier to find than the button lithium watch batteries in the smaller unit.
    Jim


  8. #8
    Silver Member knightrider955's Avatar
    Join Date
    Sep 2010
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    175
    Location
    Lakeview, MI
    Tractor
    Long 560

    Default Re: Diesel Tractor, Hot hot is too hot? Im a newbie

    Well I did like you said. I went out and worked it a little by scraping my driveway for 20 minutes or so. Stuck my finger in the radiator and the water was hot. Water in the bottom of radiatior is cool though. Maybe Im just not working it hard enough for it to get warmed up. It seems to run fine. Its only 55 hp 4 cylinder diesel but havent really done anything that seemed to bog it down. Im impressed, but then again I dont know much about tractors.
    Long 560, Quality Romanian built tractor that runs like a scalded dog.
    Oliver Super 77, Runs when it feels like it

  9. #9
    Elite Member Car Doc's Avatar
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    Mar 2009
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    3,246
    Location
    Kansas
    Tractor
    YM3810D Yanmar

    Default Re: Diesel Tractor, Hot hot is too hot? Im a newbie

    Quote Originally Posted by knightrider955 View Post
    Well I pulled the upper radiator hose off right above the thermostat and started the tractor and let it idle for 15 minutes. Thermostst didnt open. .
    Now that is strange if I read you right because almost every system I ever saw would have some circulation past even a tight thermostat since the water pump is pushing coolant or supposed to be?!

    My diesel tractor wont open the thermostat ever at an idle fyi.

  10. #10
    Silver Member knightrider955's Avatar
    Join Date
    Sep 2010
    Posts
    175
    Location
    Lakeview, MI
    Tractor
    Long 560

    Default Re: Diesel Tractor, Hot hot is too hot? Im a newbie

    Quote Originally Posted by Car Doc View Post
    Now that is strange if I read you right because almost every system I ever saw would have some circulation past even a tight thermostat since the water pump is pushing coolant or supposed to be?!

    My diesel tractor wont open the thermostat ever at an idle fyi.


    There was some water seeping past the thermostat. I was expecting it to open up after a few minutes. But I guess I need to work it a little for it to get warm enough.
    Long 560, Quality Romanian built tractor that runs like a scalded dog.
    Oliver Super 77, Runs when it feels like it

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