Warm up
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Harv
Elite Member
- Joined
- Aug 22, 2000
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- Tractor
- Kubota L2500DT Standard Transmission
Charles -
We hit this topic pretty good a while back in this thread.
I have an L2500DT, which is pretty close to what you have (just not quite as muscular /w3tcompact/icons/crazy.gif), and my manual says to warm it up at least 10 minutes here in the mild climate (California) I'm in. My actual procedure is to fire it up, wait 30 seconds before raising the bucket and rear tool off the floor and then driving it outside the shop. This step is just to keep the shop from filling up with diesel fumes. /w3tcompact/icons/tongue.gif
I then set the throttle to about 1,000 rpm, hop off and putter around, giving it a pre-flight check and/or preparing the current implements for the chore at hand. As soon as the temp guage comes close to the normal operating range (this differs on different models -- about 12 o'clock on mine), I drop 'er into high and pop a wheelie to the work site. /w3tcompact/icons/cool.gif
Total elapsed time is usually between 5 and 10 minutes. I guess it's a tad colder where you are, but I bet if you use the temperature guage as your guide you'll be all right.
We hit this topic pretty good a while back in this thread.
I have an L2500DT, which is pretty close to what you have (just not quite as muscular /w3tcompact/icons/crazy.gif), and my manual says to warm it up at least 10 minutes here in the mild climate (California) I'm in. My actual procedure is to fire it up, wait 30 seconds before raising the bucket and rear tool off the floor and then driving it outside the shop. This step is just to keep the shop from filling up with diesel fumes. /w3tcompact/icons/tongue.gif
I then set the throttle to about 1,000 rpm, hop off and putter around, giving it a pre-flight check and/or preparing the current implements for the chore at hand. As soon as the temp guage comes close to the normal operating range (this differs on different models -- about 12 o'clock on mine), I drop 'er into high and pop a wheelie to the work site. /w3tcompact/icons/cool.gif
Total elapsed time is usually between 5 and 10 minutes. I guess it's a tad colder where you are, but I bet if you use the temperature guage as your guide you'll be all right.
MikePA
Super Moderator
The Owner's Manual for my NH TC25D does not mention any warm up time. Here's the only information regarding starting the tractor. Interesting that it differs from Kubota. You'd think starting and warming up a diesel engine would be the same regardless of mfgr.
PRE-HEATING THE SYSTEM
Your tractor has a diesel engine. Before starting a cold engine, the precombustion chambers must be heated. To pre-heat the engine, turn the key switch to the 'HEAT" position and hold the key in this position until the cold start indicator light goes out (approximately four seconds)...
STARTING THE ENGINE
The safety key switch allows activation of the starter motor only when the PTO and Mid PTO (if equipped) are in the "OFF" position and the HST range lever is in the "NEUTRAL" position...Depress the clutch pedal fully and position the hand throttle forward so that it is one-fourth to one-third open when starting the tractor.
PRE-HEATING THE SYSTEM
Your tractor has a diesel engine. Before starting a cold engine, the precombustion chambers must be heated. To pre-heat the engine, turn the key switch to the 'HEAT" position and hold the key in this position until the cold start indicator light goes out (approximately four seconds)...
STARTING THE ENGINE
The safety key switch allows activation of the starter motor only when the PTO and Mid PTO (if equipped) are in the "OFF" position and the HST range lever is in the "NEUTRAL" position...Depress the clutch pedal fully and position the hand throttle forward so that it is one-fourth to one-third open when starting the tractor.
Youare
Platinum Member
I also have an L3000DT. I live in New England so it is going to get colder here. When the temps are below 40 I let the tractor warm up for about 5 minutes before moving anything. I believe the warm up period is more for the hydraulics than any thing else.
The temp gauge on my tractor only moves off the cold mark about the width of the pointer or so on a warm day.
Randy
The temp gauge on my tractor only moves off the cold mark about the width of the pointer or so on a warm day.
Randy
frank_f15
Super Member, Rest in Peace
charles: i let my 2400 warm up 3 to 5 min. even in the summer, during the cool weather at least 5 min. and when it is time to move snow at least 10 min. this is so the hydraulic oil can warm up and easier on the hydraulic system.my temp gauge hardly moves off cold even in the summer.
GlueGuy
Veteran Member
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- Jan 24, 2001
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- Kubota B7500
My routine is similar to Harv's. I also use the warm-up time to put up the ROPS (mine is the folding variety). I don't think the pre-flight lasts ten minutes, but I don't feel guilty either.
The GlueGuy
The GlueGuy
AldenMiller
New member
Hey guys, thanks for all the posts about this. I have had my B7500 for less than 10 hours and was wondering the same question. Now I know, warm it up! -Alden
accordionman
Gold Member
CHARLES,
how do you like your L3000DT? i have had mine since the last of july.
however i have not seen the temp gage go up off of the pin, even in hot
weather. i wonder if it is hooked up? i warm mine about 10min, when i am
not in a hurry. it is getting colder here in east central missouri.
accordionman
william l. brown in wright city, mo.
how do you like your L3000DT? i have had mine since the last of july.
however i have not seen the temp gage go up off of the pin, even in hot
weather. i wonder if it is hooked up? i warm mine about 10min, when i am
not in a hurry. it is getting colder here in east central missouri.
accordionman
william l. brown in wright city, mo.
Harv
Elite Member
- Joined
- Aug 22, 2000
- Messages
- 3,346
- Tractor
- Kubota L2500DT Standard Transmission
<font color=blue>have not seen the temp gage go up off of the pin</font color=blue>
That may be normal for that model of tractor. In fact, a good number of tractors seem to exhibit that same behavior on their temperature guages. You might want to check out the old Kubota Temperature Readings thread from way back when.
If you like reading, there was also another thread called Warm up time? that you might find interesting. /w3tcompact/icons/smile.gif
Personally, I like feedback, so a guage that hardly moves between "ice cold" and "normal operating temperature" would drive me nuts. /w3tcompact/icons/crazy.gif
That's just me, though. /w3tcompact/icons/wink.gif
That may be normal for that model of tractor. In fact, a good number of tractors seem to exhibit that same behavior on their temperature guages. You might want to check out the old Kubota Temperature Readings thread from way back when.
If you like reading, there was also another thread called Warm up time? that you might find interesting. /w3tcompact/icons/smile.gif
Personally, I like feedback, so a guage that hardly moves between "ice cold" and "normal operating temperature" would drive me nuts. /w3tcompact/icons/crazy.gif
That's just me, though. /w3tcompact/icons/wink.gif
Turfman
Gold Member
That's an interesting statement which brings up another question. What is a proper cool down procedure?
I'm not aware of any cool-down procedure for a non-turbo diesel. As far as I know, you treat them just like a gas engine. The famous 'cool-down' for turbo'd engines is so that the turbo gets a chance to cool off and not fry bearings, seals, oil, etc, as turbos get *really* hot under a load.
My L3000DT doesn't come off the peg, either. I'm not particularly thrilled with that either, as it suggests that either the temperature gage is completely inaccurate or that the cooling system is so oversized that the engine can't bring it up to a normal operation temperature. I hope it's the former, but that doesn't give me a good feeling. By the time it registers 'hot', the thing will probably be WAY hot.
My L3000DT doesn't come off the peg, either. I'm not particularly thrilled with that either, as it suggests that either the temperature gage is completely inaccurate or that the cooling system is so oversized that the engine can't bring it up to a normal operation temperature. I hope it's the former, but that doesn't give me a good feeling. By the time it registers 'hot', the thing will probably be WAY hot.
il cools as well as lubes internal engine parts.Turbo's especialy need ta cool down a bit at lower R.P.M.'s before shutdown.Turfman
Gold Member
Thanks for the information.
skent
Platinum Member
What I noticed is the sending unit (on mine) is located in the back of the cylinder head (nearest the instrument panel) and the thermostat is located in the front of the engine, and thats what regulates outlet water temperature. The water typically circulates from the pump, into the block, up into the head and back to the thermostat, where if it is hot enough, it will open the thermostat. So by the time the water is passing the sensor, it is only halfway to the thermostat, so it has only picked up part of it's heat load.
Last summer I clamped a digital thermometer to the water outlet (thermostat housing) and noticed the outlet water was in fact close to 180 degrees after warm up, and when I covered the radiator (to simulate overheat condition) the thermostat temp sensor hit 205 when the dashboard temp gauge hit mid scale.
The gauge does indicate that your getting hot - usually a clogged radiator screen.
Steve
Last summer I clamped a digital thermometer to the water outlet (thermostat housing) and noticed the outlet water was in fact close to 180 degrees after warm up, and when I covered the radiator (to simulate overheat condition) the thermostat temp sensor hit 205 when the dashboard temp gauge hit mid scale.
The gauge does indicate that your getting hot - usually a clogged radiator screen.
Steve
