Throttle Position?

[Yseesee]

Well, I’m still waiting on the delivery of my 2520. I’ve been getting conflicting information about the throttle position when using this tractor or any other diesel powered machine for that matter. I’ve heard people say “Always open the throttle all the way up and control the tractor speed with the high/low range selector and the pedals” and “Push the pedal and adjust the throttle when you need it”. Is there a general rule of thumb that can be followed when it comes to the throttle position or is it primarily determined by the task?? I want this thing to last a long time and I don’t want to screw things up from the get go!

 

[Chris2520]

Yseesee, I dont know what you plan on doing. Mowing you will run at 2600
that is PTO RPM. pushing dirt or digging . again 2600 RPMS PTO speed. Dont lug the tractor if there is a load on it. if you are doing Hydraulic work. such as backhoe. I find 2100 is the sweet spot. no less. that is perfect for smooth backhoe operation. not to fast and jerky. as for PTO empliments. run the machine at 2600 RPMS. you will see on the tach it says PTO range. right beside 2600. as for gears. do all dirt work pulling any load bearing in low range. if mowing. i understand you can use high only if ground is flat. no hills.
other wise low range. high is for transport. Do not be afrade of it. or you will end up like Skidoo with a messed up HST. if under big load HST starts to whine. do not let up or pull the throttle down. mash the peddle harder. tractor will do one of 2 things . start to bog or spin , most likely spin. then you back up and start again.
most important dont lug the tractor. dont try to dig in a pile of dirt or rock at 12 to 1500 RPMS. it is bad. i read it in a deisal book a few days ago. all load work is to be done at PTO RPM's unless useing the backhoe. and at higher RPMs you have better steering specialy if the bucket is loaded.

Now if you do what i just told you. you will be able to dig what ever you want . pull what ever you want and move whatever you want. and you wont hurt a thing. Trust me. I own one. and i run it like a house on fire.
I been doing this stuff 30 years. and just for the record. a 30 year tech at my john deere dealer. said. and i quote. the machine was designed to work at operating range. all day long. you will do more harm to it. trying to do a work load at lower RPMS below the operating range . because you will be lugging the tractor. and that puts strain on the hyro system. Dont lug the tractor... I tried it everyway you can. and running at PTO RPMS for load works best.

I think we pretty much got you covered.....
Now all you need is one thing..... The Dang Tractor....

Chris......

 

[orlo]

I think Chris covered about it all. It depends on what your doing. I find (on my 2305) that I can run maybe 1500-2000 if I'm just doing 'light' stuff with the loader or backhoe. I don't lug the tractor either. For PTO stuff use PTO speed. Especially when cutting. Some folks think they'll save gas running at a lower RPM. Not really so. The engine is governed, so it'll take just about as much fuel (while doing work) at a lower RPM as a higher RPM.

As Chris said the main thing is don't lug it. If it sounds like your straining it then use a higher RPM.