Hydrostatic transmission question

[chris142]

I did not get annowners manual.

I'm new to these transmissions. When operating one do you need to hold the foot lever all the way down and control your speed with the throttle or is it ok to control your speed with the foot lever?

Like is something slipping if you don't hold it all the way down? Thanks!

 

[lynnmor]

I did not get annowners manual.

I'm new to these transmissions. When operating one do you need to hold the foot lever all the way down and control your speed with the throttle or is it ok to control your speed with the foot lever?

Like is something slipping if you don't hold it all the way down? Thanks!

You can find a workshop manual here.

You adjust engine speed according to the work being done, you adjust ground speed with your foot.

 

[Russell King]

The pedal movement has been described as shifting the gears of a manual transmission to gain more speed but less ”force” as the pedal moves to the full down position. So it is not like a gas pedal in a car that provides more power from the engine. There is a separate engine speed lever and the pedal is transmission control.

The dealer may be able to get you the operating manual or you may find it here for sale.

Operator's Manuals

www.kubotaprints.com

You should get one and read it thoroughly. They provide a lot of good information.

 

[SDT]

I did not get annowners manual.

I'm new to these transmissions. When operating one do you need to hold the foot lever all the way down and control your speed with the throttle or is it ok to control your speed with the foot lever?

Like is something slipping if you don't hold it all the way down? Thanks!

As others have already stated, engine RPM controls power output. The hydro pedal effictively controls gear ratio. Pushing the pedal further down increases ground speed at the expense of torque applied to the wheels.

The pedal is not an accelerator pedal as it does not affect throttle (ignoring some machines with auto throttle advance or similar features). Pushing the pedal to the floor is like shifting your ten speed bicycle to tenth gear- you will go faster so long as you have the power to climb hills, etc.

 

[chris142]

The pedal movement has been described as shifting the gears of a manual transmission to gain more speed but less ”force” as the pedal moves to the full down position. So it is not like a gas pedal in a car that provides more power from the engine. There is a separate engine speed lever and the pedal is transmission control.

The dealer may be able to get you the operating manual or you may find it here for sale.

Operator's Manuals

www.kubotaprints.com

You should get one and read it thoroughly. They provide a lot of good information.

Ya I plan on getting one but have not had the chance yet. You would think a dealer would have got one especially considering that I have zero tractor experience.

I just don't

The pedal movement has been described as shifting the gears of a manual transmission to gain more speed but less ”force” as the pedal moves to the full down position. So it is not like a gas pedal in a car that provides more power from the engine. There is a separate engine speed lever and the pedal is transmission control.

The dealer may be able to get you the operating manual or you may find it here for sale.

Operator's Manuals

www.kubotaprints.com

You should get one and read it thoroughly. They provide a lot of good information.

One would think that a dealer selling equipment would supply a manual to the buyer especially when the buyer has zero tractor experience.

Guess not.

I do plan on getting one but until I do I don't want to damage anything.

I looked through that list you provided but didn't find mine yet.

 

[SDT]

Ya I plan on getting one but have not had the chance yet. You would think a dealer would have got one especially considering that I have zero tractor experience.

I just don't

One would think that a dealer selling equipment would supply a manual to the buyer especially when the buyer has zero tractor experience.

Guess not.

I do plan on getting one but until I do I don't want to damage anything.

I looked through that list you provided but didn't find mine yet.

One would think.

If you bought your tractor new your dealer should supply you with the correct Operator's Manual without charge. Operator's Manuals often are not supplied with used machines.

 

[chris142]

One would think.

If you bought your tractor new your dealer should supply you with the correct Operator's Manual without charge. Operator's Manuals often are not supplied with used machines.

They took mine in on trade. It's not brand new

 

[Spam Bot]

On the BX23S, the manual is in a compartment on the back of the seat backrest. I don't know if this is standard practice for other models, but you can check the rear of the seat back on your tractor for the manuals.

 

[North Idaho Wolfman]

The B7510 is 22 years old, so no where a new tractor.
Dealers typically will not supply any literature for an older tractor.

You can get the OPM from a dealer or you can get one fairly cheap and quick from here:

Kubota B7410, B7510, and B7610 Tractor Manual

This is the complete operator's manual for the Kubota B7410, B7510, and B7610 tractor.This owner's manual contains information on operating, adjusting, maintaining and troubleshooting your kubota tractor.Covers All Years and Serial Numbers - Other websites sell manuals that are incomplete or...

farmmanualsfast.com

The HST foot pedal and range controls the speed at which you move.
The throttle controls the operation of the engine.

You are not hurting it one bit by varying the HST pedal to control the speed, it's designed to do that.
You also are not hurting it having the RPMs low and going slow.
If your running a PTO (power take off) powered implement like a mower or blower or tiller, You want the engine speed at WOT (wide open throttle) or to the indication on the Tach on the dash to the RPM 540 speed setting.

 

[jimh406]

Using a HST can be counterintuitive. That is, it acts like gearing and throttle. For instance, you'll find that under a load or up hill, you might be able to speed up by letting up on the HST pedal. In that case, you'll notice the RPMs will go up as you let up on the pedal.

There is also overlap of gearing. To go the same speed, you might need full pedal on L and only partial at M.

Have fun learning.

 

[chris142]

The B7510 is 22 years old, so no where a new tractor.
Dealers typically will not supply any literature for an older tractor.

You can get the OPM from a dealer or you can get one fairly cheap and quick from here:

Kubota B7410, B7510, and B7610 Tractor Manual

This is the complete operator's manual for the Kubota B7410, B7510, and B7610 tractor.This owner's manual contains information on operating, adjusting, maintaining and troubleshooting your kubota tractor.Covers All Years and Serial Numbers - Other websites sell manuals that are incomplete or...

farmmanualsfast.com

The HST foot pedal and range controls the speed at which you move.
The throttle controls the operation of the engine.

You are not hurting it one bit by varying the HST pedal to control the speed, it's designed to do that.
You also are not hurting it having the RPMs low and going slow.
If your running a PTO (power take off) powered implement like a mower or blower or tiller, You want the engine speed at WOT (wide open throttle) or to the indication on the Tach on the dash to the RPM 540 speed setting.

Thank you! I know I can regulate the speed in driving with that pedal. I just did not know if it was basically slipping a clutch to do so and wearing something out.

I'm pretty mechanical in my thinking. I've just never seen this setup and do not understand how it works yet.

 

[MapleLeafFarmer]

HSD vs. HST.

is there any significant differences between this models HSD transmission than a typical HST?

 

[TheOldHokie]

Thank you! I know I can regulate the speed in driving with that pedal. I just did not know if it was basically slipping a clutch to do so and wearing something out.

I'm pretty mechanical in my thinking. I've just never seen this setup and do not understand how it works yet.

Your HST is a variable displacement hydraulic pump driving a hydraulic motor. Thats all located in the transmission case and takes the place of a traditional gearbox. The diesel engine drives the pump which then drives the hydraulic motor and the hydraulc motor drives the wheels

Pressing the HST pedal forward increases the displacement of the pump generating higher flow. Higher flow increases the speed of the hydraulic motor but reduces the torque going to the wheels.

Rocking the pedal backwards reverses the flow and the direction of the hydraulic motor which propels the tractor backwards.

Just that simple.

Dan

 

[SDT]

Thank you! I know I can regulate the speed in driving with that pedal. I just did not know if it was basically slipping a clutch to do so and wearing something out.

I'm pretty mechanical in my thinking. I've just never seen this setup and do not understand how it works yet.

It is not analagous to slipping a clutch and you are not abusing the transmission by varying ground speed via the HST pedal. It is designed for just that purpose.

 

[JonM]

when im using mine i set rpm to 2500 and the pedal is ground speed use whatever ammount you need in speed with the pedal. it doesnt hurt anything at all all the engine is powering is the hydraulic pump.

so control speed with rpm and pedal down makes no difference.

low rpm creates more soot faster if you have a dpf but low rpm uses less fuel if you dont need all the power. so set rpm to match your needed use and pedal for speed

 

[Trustable]

Your HST is a variable displacement hydraulic pump driving a hydraulic motor. Thats all located in the transmission case and takes the place of a traditional gearbox. The diesel engine drives the pump which then drives the hydraulic motor and the hydraulc motor drives the wheels

Pressing the HST pedal forward increases the displacement of the pump generating higher flow. Higher flow increases the speed of the hydraulic motor but reduces the torque going to the wheels.

Rocking the pedal backwards reverses the flow and the direction of the hydraulic motor which propels the tractor backwards.

Just that simple.

Dan

Thank you. I’m not the OP but that description finally made it click.

 

[North Idaho Wolfman]

HSD vs. HST.

is there any significant differences between this models HSD transmission than a typical HST?

No, they are both HST it's was just be different way of spelling out it being 4wd.

 

[Gaspasser]

Now I'm a bit confused. Thought I read here previously that it's better to run tractor (L6060 HST ) at higher throttle speeds (2000 or higher) as the diesel is optimized for this and decreases regens for the DPF. I used to reduce throttle speeds when stepping out to make adjustments or doing "easy" or light work. Higher throttle for heavy work. So run high rpm's all the time or adjust? Which is preferable? Thanks as always.

 

[TheOldHokie]

Now I'm a bit confused. Thought I read here previously that it's better to run tractor (L6060 HST ) at higher throttle speeds (2000 or higher) as the diesel is optimized for this and decreases regens for the DPF. I used to reduce throttle speeds when stepping out to make adjustments or doing "easy" or light work. Higher throttle for heavy work. So run high rpm's all the time or adjust? Which is preferable? Thanks as always.

Fact. Higher RPM lengthens time between regens but its not a life and death concern for you or the tractor.

Now, exercise a little old fashion common sense based on that fact - something that seems to be in short supply these days.

Dan

 

[Gaspasser]

Fact. Higher RPM lengthens time between regens but its not a life and death concern for you or the tractor.

Now, exercise a little old fashion common sense based on that fact - something that seems to be in short supply these days.

Dan

Thanks Dan. As a former city boy turned country boy I'm a bit short in the "tractor common sense " department. Like to think I'm reasonably well solid in other aspects of life. LOL.