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  1. #1
    Gold Member
    Join Date
    Dec 2009
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    308
    Location
    Blue Ridge Mnts, Va
    Tractor
    Kubota B7800 4/wd

    Default Let it run or off and on

    while doing various chores around the Homestead much of the time I will need maybe 5,10,15 minutes to accomplish a task. Should I leave the K B7800 running or turn it off and re-start it. In the long run is it better,worse, or does not matter to the Engines well being?

  2. #2
    Elite Member whistlepig's Avatar
    Join Date
    Jan 2009
    Posts
    3,906
    Location
    Preble County, Ohio
    Tractor
    Kubota B7800 with FEL

    Default Re: Let it run or off and on

    Quote Originally Posted by logan97 View Post
    while doing various chores around the Homestead much of the time I will need maybe 5,10,15 minutes to accomplish a task. Should I leave the K B7800 running or turn it off and re-start it. In the long run is it better,worse, or does not matter to the Engines well being?
    This has been discussed in the past. For me 15 minutes or less I leave it running. If the wind chill is -25 degrees and I'm in the middle of the pasture a half mile from the house I leave it running all the time.

  3. #3
    Platinum Member
    Join Date
    Sep 2008
    Posts
    841
    Location
    Central, AR

    Default Re: Let it run or off and on

    My B21 seems to get warmer after I turn it off. I tend to let it run at idle so the fan continues to cool it.

  4. #4
    Veteran Member kuboman's Avatar
    Join Date
    Dec 2009
    Posts
    2,018
    Location
    Canada
    Tractor
    B3200, L5740,

    Default Re: Let it run or off and on

    If you are going to be less than 10 min between chores I would leave it idle at an increased rpm to keep the temp up and stable. Anymore than 10 minutes and the fuel wasted out ways any saving on starter motors etc.

  5. #5
    Super Star Member Thomas's Avatar
    Join Date
    Apr 2000
    Posts
    12,025
    Location
    Lebanon,NH.
    Tractor
    Kubota L2800HST w/Frontloader & CC LTX1046

    Default Re: Let it run or off and on

    10 mins or more I shut engine down,when temp below 30F or so I like to keep engine running.

  6. #6
    Silver Member
    Join Date
    Oct 2009
    Posts
    183
    Location
    Ladysmith, British Columbia
    Tractor
    Don't have one of my own! I work on other people's machines.

    Default Re: Let it run or off and on

    @BruceWard: Some reading I did (Four Stroke Performance Tuning by A Graham Bell) suggested that coolant temperature increasing after an engine stops is normal.

    There's the issue of cylinder wash....I have nothing to back this up but it's generally accepted that diesel engines stand up to excessive idling better than gasoline engines do on account of cylinder wash, isn't it? On the subject: I once heard a fellow from Caterpillar say to avoid extended idling but if an engine needed to be left running for extended periods, to "bump the rpm's up a bit"

    For me, a big part of it is how hard it is to start the equipment and how hard the engine was working in the minute leading up to the stop. If it needs a lot of cranking I'm more inclined to idle the engine for short stops and if it's been working hard I'll let it idle for a minute or two before turning it off.

    My Chevy welding truck kicks over in an instant and I have no issues with killing the engine for the shortest breaks.

    Of course, on cold days....
    I assert that the egg came before the chicken: Dinosaurs were laying eggs long before chickens evolved.

    madwelder.wordpress.com

  7. #7
    Super Member RadarTech's Avatar
    Join Date
    Feb 2008
    Posts
    5,076
    Location
    North Carolina
    Tractor
    2007 Kubota L3400

    Default Re: Let it run or off and on

    One other thing to add to the equation of thought...

    If you are unlike most of the members here and your tractor sits all alone without use for a week or 2 or 3... then when your using it, those extra minutes idling can be a good thing to keep the battery charged..

    alot of starts can drain it,, but an extra 30 minutes of run time over the day can help..



    J

  8. #8
    Super Star Member
    Join Date
    Mar 2009
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    15,753
    Location
    Missouri
    Tractor
    Kubota, John Deere, Case, Massey Ferguson, Ford

    Default Re: Let it run or off and on

    Mechanical issues aside, I just can't get comfortable dismounting a tractor while it is running. I realize it can be done safely, but old habits die hard or in some cases not at all.
    Thread on helpful tractor abbreviations: http://www.tractorbynet.com/forums/o...-acronyms.html

  9. #9
    Super Member
    Join Date
    Feb 2006
    Posts
    7,695
    Location
    VA
    Tractor
    JD2010, Kubota3450,2550, Mahindra 7520 w FEL w Skid Steer QC w/Tilt Tatch, & BH, BX1500

    Default Re: Let it run or off and on

    Quote Originally Posted by TripleR View Post
    Mechanical issues aside, I just can't get comfortable dismounting a tractor while it is running. I realize it can be done safely, but old habits die hard or in some cases not at all.
    I can certainly see that, esp in cases of precarious parking or mobile implements left running. In the cold light of day tho I have to consider the times we use tractors to apply stationary power without a bit of worry about the tractor itself doing anything unpredicted. -- PTO gen, pump, hay elevator, wood chipper, post driver, ... etc. How can this be any different than getting off a parked idling tractor? Quality of the parking job is the only thing I can see.
    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

  10. #10
    Super Star Member
    Join Date
    Mar 2009
    Posts
    15,753
    Location
    Missouri
    Tractor
    Kubota, John Deere, Case, Massey Ferguson, Ford

    Default Re: Let it run or off and on

    Quote Originally Posted by SPYDERLK View Post
    I can certainly see that, esp in cases of precarious parking or mobile implements left running. In the cold light of day tho I have to consider the times we use tractors to apply stationary power without a bit of worry about the tractor itself doing anything unpredicted. -- PTO gen, pump, hay elevator, wood chipper, post driver, ... etc. How can this be any different than getting off a parked idling tractor? Quality of the parking job is the only thing I can see.
    larry
    Oh, I didn't say it made sense nor that it couldn't be done safely, just that in my 60's, having spent my formative years and later on old iron without much in the way of safety features, it is just hard for "me" to feel comfortable doing it.

    It doesn't bother my sons a bit as all they have ever used is modern equipment with brakes that actually work, safety switches etc.
    Thread on helpful tractor abbreviations: http://www.tractorbynet.com/forums/o...-acronyms.html

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