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  1. #1
    Gold Member alvanko's Avatar
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    Mar 2002
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    399
    Location
    Hinckley , Ohio
    Tractor
    Yanmar YM186D & Ford LGT14D

    Default Cooling System,Thermostat

    I have an L2201DT kubota , same thing as an L245DT . Same engine . I did some repair/preventive maintanance this past week and am confused . I replaced the radiator , all hoses , water pump , belt and thermostat . I flushed the system throughly before adding a 40/60 anti-freeze mix . I went out and worked the tractor today , not very hard , but it ran for about 2 hours without turning off . Temperature here is in the upper 40's . When I finisned working I pulled into the garage just to grease and give it a quick look over and thought I'd check the radiator hoses . Top hose was hot and the lower hose was almost ice cold . This thing doesn't have a temperature guage but it has a whistle on the overflow . It didn't over heat(I don't think) .Why is the bottom hose cold ? Do you think the thermostat is stuck closed ? Maybe it never got hot enough to open ? Engine and top of radiator were hot . I'm guessing thermostat . How hot does it need to be before it opens ? I used an oem($14 !!) thermostat . Suggestions ? Advise ? When I opened the cap the water was not "flowing". I asume the only circulation was through the bypass hose . I don't want to over heat the thing but I would like it to get to proper operating temperature . I'm confused !
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  2. #2
    Veteran Member
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    Dec 2000
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    1,396
    Location
    Queensland, Australia
    Tractor
    Kubota L1-20 DT

    Default Re: Cooling System,Thermostat

    Allan

    You sure it had a water pump??

    My L1501 (Same as L185 - Smaller version of a L245) uses a thermosyphon cooling system. Water circulates due to convection.

    Colder water sinks and pulls water through that way.

    My bottom radiator hose is surprisingly cold when mine is running too.

    I assume they have a fairly large radiator and efficient fan and the system works well.

    I didn't know mine had a thermostat either so maybe your system is different to mine??

  3. #3
    Gold Member alvanko's Avatar
    Join Date
    Mar 2002
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    399
    Location
    Hinckley , Ohio
    Tractor
    Yanmar YM186D & Ford LGT14D

    Default Re: Cooling System,Thermostat

    Positive it had a water pump ($115) Bearings were bad in the original one (20 some years old)

  4. #4
    Bronze Member
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    Mar 2002
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    73
    Location
    Middletown,PA
    Tractor
    BX2200

    Default Re: Cooling System,Thermostat

    Sounds to me like your cooling system is working fine.

  5. #5
    Gold Member alvanko's Avatar
    Join Date
    Mar 2002
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    399
    Location
    Hinckley , Ohio
    Tractor
    Yanmar YM186D & Ford LGT14D

    Default Re: Cooling System,Thermostat

    Maybe it is working fine . I'm just curious because I never see the water circulate .

  6. #6
    Veteran Member
    Join Date
    Dec 2000
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    1,396
    Location
    Queensland, Australia
    Tractor
    Kubota L1-20 DT

    Default Re: Cooling System,Thermostat

    Sorry Allan

    Wasn't really doubting you. I am sure if I had reaplaced a water pump, I'd know what it was too [img]/w3tcompact/icons/laugh.gif[/img]

    I was sure all those models had a thermosyphon system.

    Cheers

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