Page 3 of 3 FirstFirst 123
Results 21 to 29 of 29
  1. #21
    Bronze Member
    Join Date
    Nov 2001
    Posts
    92
    Location
    bayview township, bayfield co. WI
    Tractor
    NH TC25D

    Default Re: Need to Warm Up a Diesel Engine?

    My NH dealer & service techs all recommend warming up to operating temp before subjecting the tractor to any significant load. Even using the block heater during the winter months the loader & 3pt hydro will "squeal" without a warm up. Not a problem during the summer. A simple tip to get the hydro fluid up to temp a little quicker is while idling & in neutral rock the hydro pedal. No objective data. Seems to work. Warm up period provides a good time to do a walk around checking for potential bad things like loose lug nuts.

  2. #22

    Join Date
    Oct 2002
    Posts
    70
    Location
    Maryland
    Tractor
    Kubota L3410

    Default Re: Need to Warm Up a Diesel Engine?

    I warm my tractor up prior to any use other than leaving the shed. Putting around with limited load seems prudent enough though. In the winter I use a 250 watt magnet heater on the oil pan and a 500 watt light under the tranny for several hours. So even on the colder (teens) days 5 minutes of running seems to be enough.

  3. #23
    Platinum Member
    Join Date
    Jun 2002
    Posts
    512
    Location
    Northern Illinois
    Tractor
    Kubota BX2660

    Default Re: Need to Warm Up a Diesel Engine?

    HWP,
    I addressed this question with my dealer and he said to wait at least until the temperature needle moves from the position it was in when you started it. Only pushing 35 hours on a new kubota B7500, but I believe a little warm-up time can only help. It's like gettin' out of bed on a cold morning... do you want to hammer down and run the 500 before warming up? [img]/w3tcompact/icons/laugh.gif[/img]

  4. #24

    Join Date
    Oct 2002
    Posts
    24
    Location
    Gig Harbor, WA
    Tractor
    B7500

    Default Re: Need to Warm Up a Diesel Engine?

    Page 22 - "Operator's Manual"
    Kabota Tractor Models B7400 - B7500

    "For five minutes after engine start-up, allow engine to warm up without applying any load, this is to allow oil to reach every engine part. If load should be applied to the engine without this warm-up period, trouble such as seizure, breakage or premature wear may develop."

    It goes on to talk about transmission oil and low ambient temperatures. Basically, it reads warm up time required for temps above 32 degrees - at least 5 minutes.
    32 to 14 degrees - 5 to 10 minutes
    14 to -4 degrees - 10 to 15 minutes
    below -4 degrees - more than 15 minutes.

    My new tractor came with instructions!

  5. #25

    Join Date
    Oct 2002
    Posts
    65
    Location
    Cut -N- Shoot Texas
    Tractor
    '02 JD 4110 HST

    Default Re: Need to Warm Up a Diesel Engine?

    Rich, Didn't you know it will void your warranty if you are caught reading instructions.....almost as bad a asking for directions..HA!...Just kidding

  6. #26
    Epic Contributor Bird's Avatar
    Join Date
    Mar 2000
    Posts
    37,773
    Location
    Texas

    Default Re: Need to Warm Up a Diesel Engine?

    <font color=blue>I had to let the tractor “warm-up” for about 45 minutes before the power steering worked properly and before the rest of the hydraulics would even move</font color=blue>

    John, that reminds me of a neighbor's experience with an older used Oliver diesel that he bought a few years ago. Not nearly as cold down here in Texas, but on one of our colder mornings shortly after he bought that tractor, he started it up and had the same problem you had. He told me he left it running while he went back in the house and called the dealer to complain about it breaking when he'd only had it a few days. The dealer told him, "By the time you get back out there to that tractor, I'll bet everything is working." It was, and the neighbor told me felt like a fool for calling the dealer.[img]/w3tcompact/icons/laugh.gif[/img]

  7. #27
    Platinum Member hwp's Avatar
    Join Date
    Dec 2001
    Posts
    643
    Location
    St. Catharines, Ontario, CANADA
    Tractor
    Kubota F2400

    Default Re: Need to Warm Up a Diesel Engine?

    Thanks for the great discussion. I'm convinced. I was talking to a friend on mine, a Benz mechanic, and he told me that the major concern is rapid cooling of the block when the thermostat opens. If a diesel engine isn't allowed to warmup gradually but is put under load too quickly, then at the time the thermostat opens, the block will be very hot around the cylinders from the combustion process and the sudden rush of cold coolant from the radiator can cause the block to contract and seize the number one piston. He explained that this is due to two reasons: the first is that the block of a diesel is much heavier due to the need to withstand the higher pressures from the higher compression, and therefore there is more metal to contract and second, the tolerances in a diesel engine are tighter, again to meet the higher compression pressures, so there isn't as much ability to accomodate the contraction of the block when the coolant first starts to flow. When I asked him why this isn't raised in the Benz owner's manuals he said that is was because a diesel engine in a car usually isn't worked hard enough to matter, but that he had seen it happen. So the message I get is to warm up the diesel before putting it to any heavy work.

  8. #28
    Veteran Member gerard's Avatar
    Join Date
    Apr 2000
    Posts
    1,681
    Location
    Syracuse NY
    Tractor
    Kubota L2500DT w/FEL

    Default Re: Need to Warm Up a Diesel Engine?

    Seems to make some sense but my knowledge of thermostats is that they also open gradually - it's not an open/shut arrangement per sey.

  9. #29

    Default Re: Need to Warm Up a Diesel Engine?

    <font color=blue>Seems to make some sense but my knowledge of thermostats is that they also open gradually - it's not an open/shut arrangement per sey. </font color=blue>

    I once questioned whether a thermostat was working properly in some vehicle I owned, and so took it out and put it in a pot on the stove and watched it as the water heated.

    The thing that I remember surprising me was that it opened pretty quickly once the temperature that it wanted to open at was reached.

    It was not a snap switch from closed to open, but it was fairly quick...

    Bill in Pgh, PA

Page 3 of 3 FirstFirst 123

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.