importance of position control

[von-mil]

Another way to look at it is that with position control (closed loop with feedback rod), your 3PH implement can never drift downward due to cylinder leak. Any leakdown is automatically and instantly corrected to keep the implement at the height you set it at. Any numbers on the control lever are just a reference point for the operator to use when selecting the implement height.

 

[GirlWhoWantsTractor]

with position control (closed loop with feedback rod), your 3PH implement can never drift downward due to cylinder leak. Any leakdown is automatically and instantly corrected to keep the implement at the height you set it at.

Well that's something completely different then. Thank you for the explanation. It makes sense.

Final attempt. If this isn't it, will give up and face the fact I am too dumb to understand this.

Types of 3PH controls:

1. Old-style control lever typically found on older tractors that can only raise the implement all the way up, or all the way down.

2. Modern control lever commonly found on SCUTS and CUTS that can raise the implement up, down, or anywhere in between. Lever remains in the position set by the operator due to friction. May also have set screws to act as stops. May also have detents to allow you to return to the same height easily.

3. Dual-action lever that operates like #2, but you can also move the lever to the side and bump it against two detents to raise the 3PH up or down 1/4" at a time ("1/4-inching").

Tractors equipped with "position control" will automatically adjust for any hydraulic leakdown, keeping the implement at the height set by the operator.

A separate Hydraulic Flow Knob allows you to adjust the speed at which the 3PH lowers in response to the lever. May also have a "lock" position useful when trailering.

Larger ag tractors also have a function called "draft control" that bumps the rear implement up when it hits an obstacle to protect the rig from damage.

:drink:

 

[wagne223]

Well mine stays in place due to friction just fine. Hard to believe any control lever would NOT stay where you put it???? But there are no detents or markings.
View attachment 568240

Hmmmm, I suppose I could just draw some markings on a piece of tape and stick it on.

If that image is representative of your tractor then you have a position control valve.

As you mentioned, you can just add markings.

I dont have an image handy, but mine looks similar to that image just with the numbers 1 - 8 between the upper and lower symbols.

 

[wagne223]

Well mine stays in place due to friction just fine. Hard to believe any control lever would NOT stay where you put it???? But there are no detents or markings.
View attachment 568240

Hmmmm, I suppose I could just draw some markings on a piece of tape and stick it on.

Found an image online of the L Kubota position control lever.

 

[SDT]

Well that's something completely different then. Thank you for the explanation. It makes sense.

Final attempt. If this isn't it, will give up and face the fact I am too dumb to understand this.

Types of 3PH controls:

1. Old-style control lever typically found on older tractors that can only raise the implement all the way up, or all the way down.

2. Modern control lever commonly found on SCUTS and CUTS that can raise the implement up, down, or anywhere in between. Lever remains in the position set by the operator due to friction. May also have set screws to act as stops. May also have detents to allow you to return to the same height easily.

3. Dual-action lever that operates like #2, but you can also move the lever to the side and bump it against two detents to raise the 3PH up or down 1/4" at a time ("1/4-inching").

Tractors equipped with "position control" will automatically adjust for any hydraulic leakdown, keeping the implement at the height set by the operator.

A separate Hydraulic Flow Knob allows you to adjust the speed at which the 3PH lowers in response to the lever. May also have a "lock" position useful when trailering.

Larger ag tractors also have a function called "draft control" that bumps the rear implement up when it hits an obstacle to protect the rig from damage.

:drink:

No. You are not getting it, and several statements are incorrect.

This has been beaten to death and I'm giving up.

SDT

 

[oosik]

I don't think I've ever read a thread on TBN with so much misunderstand and half truths. If folks would simply read their operator manual there could be elucidation.

SDT - you are a patient man beyond normal endurance but you are wise to give up. Folks must read and understand their Op manual for starters.

You have done everything except stand on your head - - its just not penetrating and registering with the audience.

That poor girl - - she was doing better at the very beginning.

It past time to push back and have a Miller Lite.

 

[GirlWhoWantsTractor]

I don't think I've ever read a thread on TBN with so much misunderstand and half truths. If folks would simply read their operator manual there could be elucidation.

SDT - you are a patient man beyond normal endurance but you are wise to give up. Folks must read and understand their Op manual for starters.

You have done everything except stand on your head - - its just not penetrating and registering with the audience.

That poor girl - - she was doing better at the very beginning.

It past time to push back and have a Miller Lite.

I understand how the 3PH control works on *my* tractor. I *did* read the manual--many times. But there is so much confusing info on this subject (and a few others) in various threads, it made me wonder if I was missing something, or if other brands might have a better type of control. Might be something to consider if I buy another tractor. I'm trying to become more familiar with all these mechanical controls and systems. I would like to understand mechanical principles a little better. I would like to use the proper terms for things. I am truly sorry if that annoys anyone, or wastes your time. I appreciate the time you guys spend patiently explaining things to us newbies. It's one of the things that makes TBN such a great resource.

Now, as promised, I give up.

 

[oosik]

GWWT - just think now girl - next time you go into your local Mahindra dealer - you will be able to explain position control and draft control to some new fellow who is there drooling over a new tractor. You will get half way thru the explanation - look up - there will be the top Mahindra sales person listening and learning from you also.

AND - do not give up. Each time I log on to TBN - go to the forum - its with the expressed intent to learn something new. I'm seldom disappointed. I know a whole lot about my field of speciality - unfortunately, its not tractors.

 

[SDT]

I understand how the 3PH control works on *my* tractor. I *did* read the manual--many times. But there is so much confusing info on this subject (and a few others) in various threads, it made me wonder if I was missing something, or if other brands might have a better type of control. Might be something to consider if I buy another tractor. I'm trying to become more familiar with all these mechanical controls and systems. I would like to understand mechanical principles a little better. I would like to use the proper terms for things. I am truly sorry if that annoys anyone, or wastes your time. I appreciate the time you guys spend patiently explaining things to us newbies. It's one of the things that makes TBN such a great resource.

Now, as promised, I give up.

If, as seems apparent, my response above implied that I was annoyed at your questions, I apologize.

Annoyance is not the correct word. Frustration is, but not with your questions but rather with myself for failing to explain what is a rather simple concept in a manner that is effective, and, more so, with some other posters in this thread who have posted half true, misleading or simply inaccurate information, causing confusion.

If you can get access to a tractor that has position control, a simple demonstration will make its operation immediately obvious in a forehead slapping moment.

The next best approach would be to read the operational description of position control in the owner's manual of a tractor so equipped. Caveat: Few SCUTs have position control. Correspondingly, there will be no description of position control in such owners manuals.

SDT

 

[RayfromTX]

This is copied from a 16 year old post from another forum. Might it be helpful in understanding this?

"Position control? I'll see if I can give you an explanation that makes sense (I've had a B7100 without it and a B2710 with it).

Without position control, the lever is centered and when you raise or lower the 3-point by moving the lever forward or backwards, it continues in an up or down movement until you center the lever again. The distance you move the lever may affect the speed with which it raises or lowers, but not where it stops. So you have to just go by visually watching to stop it where you want it.

With position control, the slot for the lever is usually numbered (1 to 8 in my case), with 1 being all the way down and 8 being all the way up. If you want to lower it to 4, move the lever there, the hitch stops at that point and the lever stays where you left it. It's much easier to make small adjustments in the height of the hitch, and if you raise it, it's much easier to lower it back to the same height again.

In other words, position control is a VERY NICE feature and I really like it, but it's not absolutely necessary."