My B2710's owner's manual talks about warm-up times, which I follow dilligently. Question is, when people warm these things up, do you generally boost the RPM's above idle? After starting and the idle smoothing out, I usually set the throttle to between 1100 and 1200 RPM's for the duration of the warm up cycle.
Warm up RPMs?
- Thread starter DRFoster
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Bird
Rest in Peace
Dennis, my B2710 came with the idle set at 1200 rpm and maybe that's where it should be but it seemed too fast to me, so I backed it down around 800-900 rpm. I start it at that low rpm, give it just a very few seconds to get the oil circulating, then throttle up to 1200-1500 rpm to let it warm up. Just my personal opinion of the best way; no scientific fact.
Harv
Elite Member
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- Kubota L2500DT Standard Transmission
The owner's manual for my L2500DT says to warm it up at "50% of the rated rpm", which is listed at 2800 rpm. I seldom crank it all the way up to 1400 right away (sounds like it's going to run away without me /w3tcompact/icons/frown.gif), but I definitely set it above 1000. Guess that makes it about the same as what you're doing. /w3tcompact/icons/wink.gif
HR_Mutt
Gold Member
DRFoster
I warm up same as Bird does. In fact for a while, I'd kinda not get in much warm up before pressing on. Not any longer. Whatever project will wait a few minutes/w3tcompact/icons/wink.gif. Another bit of knowledge learned from TBN
regards
Mutt
I warm up same as Bird does. In fact for a while, I'd kinda not get in much warm up before pressing on. Not any longer. Whatever project will wait a few minutes/w3tcompact/icons/wink.gif. Another bit of knowledge learned from TBN
regards
Mutt
Boondox
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- Deere 4044R cab, Kubota KX-121-3S
Clementine used to warm up at around 1000rpms for five minutes, then 1400-1500 for another five (longer in winter). But since you guys convinced me I ought to plug in that block heater, she warms up much faster. So now I go straight to 1500 after a 30 second "listen to the engine sounds" period. This time of year, with the highs in the twenties if I'm lucky, she gets a full ten minute warmup.
Pete
www.GatewayToVermont.com
Pete
www.GatewayToVermont.com
RocketJSquirrel
Bronze Member
Our JD TLB manual says to warm it up at what they call a fast idle, which I think they define as half throttle.
I believe I have read that slow idle does not warm up a diesel very well.
I warm up my JD 755 at 300-500 rpm above idle.
-RJS
I believe I have read that slow idle does not warm up a diesel very well.
I warm up my JD 755 at 300-500 rpm above idle.
-RJS
My L3410 started this AM at 1200rpm, diminishing to about 1000rpm as it warmed up (it starts at the same lower rpm range in summer). Ambient temperature was about 45 degrees F (in South Carolina - to ice bound Northerners, my apologies). Seems the manufacturer, or dealer, has it about right.
Youare
Platinum Member
Last weekend the temps. here in New Hampshire got down in the low 20's so I plugged my L3000DT in for the first time. I noticed a big difference when starting her up, almost like summer time.
I used to idle the engine at the lowest throttle setting it had, around 700 RPM. After reading the TBN posts I realized this is not the best thing to do. I start the engine with the throttle set around 800-900 RPM after a few seconds I advance the RPM's to about 1100 and let it run at least 5 minutes.
I was talking with my brother-in-law who recently moved to Alaska about what they do when the temps. stay below zero all day. On the diesel equipment they have a special idle switch that increases the engine idle to 1200 RPM any time the engine is going to run longer than a few minutes without working.
Too low an RPM causes uneven heat in the cylinder, cold spots, bumping the RPM's up to something over 1000 solves this problem.
Randy
I used to idle the engine at the lowest throttle setting it had, around 700 RPM. After reading the TBN posts I realized this is not the best thing to do. I start the engine with the throttle set around 800-900 RPM after a few seconds I advance the RPM's to about 1100 and let it run at least 5 minutes.
I was talking with my brother-in-law who recently moved to Alaska about what they do when the temps. stay below zero all day. On the diesel equipment they have a special idle switch that increases the engine idle to 1200 RPM any time the engine is going to run longer than a few minutes without working.
Too low an RPM causes uneven heat in the cylinder, cold spots, bumping the RPM's up to something over 1000 solves this problem.
Randy
Since new, mine idles about 800-900 RPM's so it sounds like your adjustment is about right. It also sounds like I'm already doing what most others do, warm up wise, so I'll stick with it, although I'll probably go with a little higher RPMs.
My tractor does have a block heater but I don't want to leave it plugged in all the time and its too far away to trudge down to an hour or so before plow time (which usually is 5:30 AM.) What I need is some kind of remote control that I can turn it on from the house if I know I'm going to need it.
I switched it to Mobil 1 Delvac 5W40 (synthetic) which has made starting easier this winter. One morning it had cleared after an overnight snow and was -10F. Thankfully, it was a Saturday and I did plug it in a couple of hours before starting. Yesterday morning, it was +10F and started first crank (without the block heater and after 10 seconds on the glow plugs) which has been quite normal this winter.
PS: For those of you that haven't had "winter" yet, I think its all in Utah for the upcoming Winter Olympics! I filled my tractor for the 3rd time this winter yesterday. Last year, I only used a tank and a half the entire winter. We've proably got 2 feet standing on the ground. Nearby ski areas have 15+ feet, all since Thanksgiving.
My tractor does have a block heater but I don't want to leave it plugged in all the time and its too far away to trudge down to an hour or so before plow time (which usually is 5:30 AM.) What I need is some kind of remote control that I can turn it on from the house if I know I'm going to need it.
I switched it to Mobil 1 Delvac 5W40 (synthetic) which has made starting easier this winter. One morning it had cleared after an overnight snow and was -10F. Thankfully, it was a Saturday and I did plug it in a couple of hours before starting. Yesterday morning, it was +10F and started first crank (without the block heater and after 10 seconds on the glow plugs) which has been quite normal this winter.
PS: For those of you that haven't had "winter" yet, I think its all in Utah for the upcoming Winter Olympics! I filled my tractor for the 3rd time this winter yesterday. Last year, I only used a tank and a half the entire winter. We've proably got 2 feet standing on the ground. Nearby ski areas have 15+ feet, all since Thanksgiving.
frank_f15
Super Member, Rest in Peace
i usually start my 2400 at about 1000 to 1200 rpms, that is where it sounds right. fast enough to sound right but not to fast! i know it sounds strange but u get a feel for each individual machine.