V Teks Loader/ Hydraulics Questions

[Scotty Dive]

I have a Yanmar 2020D with the V2 Loader. All works fine but am I (new to this) experiencing some weakness in the system around the bucket curl.

I have been using my box blade to scrape up material and then using the loader to pick up the dirt. When digging, picking up material, or trying to pick up rocks, the curl on the bucket is very weak when the 3pt is in the up position. If I lower the box blade a bit I get curl stength back.

Should I test the system pressure?- If so I need to buy a guage and adaptors? Anyone have any idea what the fitting size is? And, where would I hook the gauge to check the system pressures? I assume once hooked up I put a load in the bucket and see what the readings are?

As for the curl being weak when the 3pt is up - is that normal? Seems the 3pt is calling for pressure / fluid while I am trying to use the curl on the loader. It has a blb joystick loader valve with no float or BYD.

I may not be able to really check into this until spring - Its bound to start getting cold here again! - and the ground should be too hard to dig, but I want to get my head around this so I can tackle this sooner than later.

 

[winston1]

If you lower your 3 point just an inch or so how is the bucket curl? If it seems to be stronger there your feedback rod may need adjusting. The feedback rod is what tells your control valve to quit trying to raise higher. If your pump seems a little loaded when the 3 point is all the way up that is another indication the feedback needs adjusting. Whether you need it or not I will attach a page out of the ym220/226 manual showing the adjustment. I apologize for the quality of the picture but that is as plain as it is in my manual. Your 2020 may be completely different. :thumbsup:

 

[Car Doc]

Scotty, read kenmacs thread last summer about the grapple he installed there is reference to this problem (that I have also btw) maybe you are experiencing the same thing?

I can tell you from experience you will get no sympathy or help from any dealer or installer on the matter if you installed it the way I think you did.
(since its been done that way from the beginning of time with noooo problems whatsoever...) PM me I have an interesting story about it if interested.

I have not re-done mine yet like kenmac did but I will next spring but he/we have determined a PB at the loader control with a dedicated drain pipe going into the sump is the fix for ours anyway, being as how the 3pt pressure is acting on the loader control since its in series on the Jap market tractors anyway.

 

[Scotty Dive]

If you lower your 3 point just an inch or so how is the bucket curl? If it seems to be stronger there your feedback rod may need adjusting. The feedback rod is what tells your control valve to quit trying to raise higher. If your pump seems a little loaded when the 3 point is all the way up that is another indication the feedback needs adjusting.

Yes Winston - exactly. When the 3pt is lowered slightly, power is restored to the curl!. I will take a look at the file you sent over - THANKS!!!

Car Doc - would love to hear the story. Also I did not install the loader - it came that way. So it is set up like all of the VTEK loaders I am pretty sure. I am getting pretty good with lowering the 3pt a bit but its a pain and when I lower it and it lowers the box blade, I sometimes start dragging and its a little more dangerous when going over uneven ground. I will search out the Kenmac thread and post it here if I find it for posterity. Thank you

 

[Car Doc]

Yup the whole idea of us having to pay attention the where the 3pt is at to get the loader to work right is where I get rubbed raw= I say the **** with that jmho.

 

[Scotty Dive]

Cardoc - Yeah....I agree.....but it seems that its pretty costly to fix. I would need a new loader valve at a minimum.....no Power beyond capabilities and no float in mine....so thats about $300 just to start. Add in the fact that I am a hack when it comes to hydraulics......and I can hear the cash regsiter - CA CHING!

 

[Car Doc]

That's too bad. Well maybe Winston is on track to helping you, what he posted sounds plausible as an explanation and may be the best work around for the problem hope it works!

My draft control has no effect on my 3 pt unless I actually flip the lever to engage it so the adjustment wont fix mine unfortunately.

 

[Scotty Dive]

Going to try to adjust that 3 pt rod.....but do have a question.....

How is the 3pt supposed to work?
1. Does it automatically raise to the full upright position at some point as you move the control lever...OR
2. Does it raise up only to the corresponding amount the control lever is moved?

 

[winston1]

Going to try to adjust that 3 pt rod.....but do have a question.....

How is the 3pt supposed to work?
1. Does it automatically raise to the full upright position at some point as you move the control lever...OR
2. Does it raise up only to the corresponding amount the control lever is moved?

#2, but it may reach full height before the lever is all the way back.

 

[Scotty Dive]

THANKS Winston - I spoke to Hoye the other day and they said that it was more like number 1, but mine sure doesn't act like that and honestly, I like the ability to raise it up in increments so I am glad to hear that its number 2.


Hoye did confirm that when the 3pt hitch is up and wanting to move upwards and cannot (like mine) and the loader bucket is calling for fluid, that it could be dead heading which is not good. So I am going to try to make that adjustment this weekend...Thank you for the photos too!

Oh...Hoye thought that the pump I have would provide 9 gpm - so the pump should be able to handle this.

 

[winston1]

Well Hoye's knows a lot more about these Yanmars than I do but I thought all the Yanmars had 3 point lifts that could be raised to any height disired and hold it at that height. Only one I am positive of is my ym2002d and it will hold at any height from bottom to top.

 

[Car Doc]

Yeah my 3 pt is the same as Winstons it will hold wherever I stop the draft control also and move infinate increments up or down so Id say that is the way they are supposed to be when working right and thats what I expect it to do.

Now when the little lever on my auto draft is flipped it is supposed to lift the 3 pt when the drag gets too much but the 3 pt still acts pretty much the same its different on the down but still holds where I stop the lever. (if that makes any sense) I have not really played with it much my straight runs with the tiller or plow are only 100' at a time so I just adjust the 3 pt manually by the draft lever. fwtw

As far as your problem Scotty in my minds eye shortening the reaction rod is where I would start so as the 3 pt gets to the top it is not pushing on the control however yours does that I am not sure.

I have a different set up but works the same so I kind of get whats going on but cant offer a real solution just ideas sorry.

 

[clemsonfor]

THANKS Winston - I spoke to Hoye the other day and they said that it was more like number 1, but mine sure doesn't act like that and honestly, I like the ability to raise it up in increments so I am glad to hear that its number 2.


Hoye did confirm that when the 3pt hitch is up and wanting to move upwards and cannot (like mine) and the loader bucket is calling for fluid, that it could be dead heading which is not good. So I am going to try to make that adjustment this weekend...Thank you for the photos too!

Oh...Hoye thought that the pump I have would provide 9 gpm - so the pump should be able to handle this.

I think Hoye misunderstood you. If you pull the lever just a bit up on your 3pt you should move just a bit. Like winston said mine tops out before the lever is all the way back, but still like 85-95% of the rull range of the lever before its topped out. If as soon as you moved the lever up it went all the way to the top it would be impossible to control the depth of a box blade a plow that was running to deep or a bushhog height to mow. there wrong on this. It works like your #2 senario you listed.

 

[kenmac]

I had my mine out of adjustment. When I raised the lever all the way up, it would load the engine ( like it was still trying to lift but was all the way up) I have a stop on the lever that I adjusted to keep me from moving my lever too far so, it won't do this. But, like others have said, mine will stop at any height & hold there

 

[clemsonfor]

I had my mine out of adjustment. When I raised the lever all the way up, it would load the engine ( like it was still trying to lift but was all the way up) I have a stop on the lever that I adjusted to keep me from moving my lever too far so, it won't do this. But, like others have said, mine will stop at any height & hold there

Mine will do this, i just make a habit to not pull it up all the way. I think you can adjust this, im just to lazy to do so.

So i just pull it up to about 90% of the range of motion. After several years i dont even pull all the way to the back anymore(actually after several weeks of using it).

 

[careyo63]

If I'm understanding this correctlly :ashamed: Easy Fix even for me. When your Arms have "Almost" reached thier highest point that where you set the Adj. nuts on the Cam to your Linkage to pull the plunger away from the Hyd.valve. No mention of this Adj. All you need is a pair of pliers.

 

[Scotty Dive]

Now when the little lever on my auto draft is flipped it is supposed to lift the 3 pt when the drag gets too much but the 3 pt still acts pretty much the same its different on the down but still holds where I stop the lever.

Cardoc - interested in what you said...I thought the draft control had to have an implement like a tiller that put pressure on a spring to make the draft control work.

I have draft control but it does not seem to matter where I set it.

As for Hoye - I love those guys - so I do think we had a disconnect, but I had a long conversation with them and I was pretty surprised when we discussed it. Because I was really concerned that I had a BIGGER problem that I thought.

He said that when I pull up the 3 pt lever, there will be a point (he said about halfway) where it will raise all the way to the top. He suggested I install a screw or something similiar to stop the lever or adjust the linkage. I intend to adjust the linkage and if that won't work - some sort of stop mechanism is next!!

 

[winston1]

The Yanmars with draft control have two levers, the outside one is to raise or lower the 3 point. The inside one is the draft control lever. The Yanmar draft control is only activated by a cable that goes back to a tiller. I will attach a thread here from Mickeyfx. He is the only one I know of that has it hooked up and working as disigned. http://www.tractorbynet.com/forums/yanmar/105695-auto-tiller-controls.html

 

[HoyeTractor]

As for Hoye - I love those guys - so I do think we had a disconnect, but I had a long conversation with them and I was pretty surprised when we discussed it. Because I was really concerned that I had a BIGGER problem that I thought.

Sorry about that. I'm not sure who you talked to here but I'm pretty sure something was misunderstood one way or the other. We'll have three point school Monday just to make sure everyone here is up to speed though.

You should be able to raise or lower the three point and stop at any position. They do use a valve that is either raising, lowering, or holding but the linkage determines where you want the three point to be and moves the valve to the necessary position.

Sorry for the confusion.

 

[Scotty Dive]

Aaron - I am sure it was me that got it confused.