Three point valve broken!!!

[California]

California, one of those links was pretty insightful, thank you!

It helped to clue me in as to why when the 3pt is up, I am getting that fluid feedback back through the loader valve control spool.
Which indicates to the problem I am having which is not being able to find the 渡eutral for the 3pt.

What if, I have it adjusted and get it into the neutral spot, but the 3pt doesn稚 hold up? What would that mean?

I've been watching this thread over the last day or so but I don't have any solutions.

Seems to me your theory of fluid leaking back through the loader control might be a clue of excessive pressure, a blocked return path, downstream from the loader valve. The fluid is supposed to just bypass at zero pressure through the loader valve and back to the sump (also bypassing through the 3-point control when it isn't in use) - except when a loader control is pushed/pulled to divert fluid out to a loader cylinder.

If all the hydraulics aren't the cause, then possibly that repaired linkage isn't right. The linkage may be calling continually for 'raise 3-point' when actually you don't want that.

I'm stumped. Aside from all my beginner questions in the threads I linked, i don't have much knowledge of hydraulics. I've never had to troubleshoot hydraulics like you are doing. My loader control replacement project ended up as a like-for-like replacement of the old dribbly control. After asking a lot of questions I decided to ignore some of the graybeard hydraulic specialists (self proclaimed?) on TBN who insisted the way Yanmar recommends in the YM240 manual, could never work. It worked before the replacement, and now, after.

 

[Indirocz28]

Not sure what this means. The valve on my YM2001 is on the side of the lift cylinder instead or on the top like the YM2000.

Ahhhh okay, I thought you were meaning the linkage.

 

[Indirocz28]

I still think that it is the interaction between 27, 34, 47 and 40 in this picture. It is really hard to tell in your video. It is almost as if 40 and 47 are not pinned together.

THREE_POINT_CONTROL: Yanmar Tractor Parts

Those two linkages should counteract the movement of 34 to find the neutral point of the valve.

And what I知 saying is, when I get it close to any type of 渡eutral when adjusting the linkage thread by thread, the 3point still sinks to the ground and puts load on the pump. It痴 a little boggling..

California, could you post pictures of your linkage rods and how they sit with the lever all the way forward and the vertical finger not hitting the 3point spool pin by chance?

 

[Indirocz28]

I've been watching this thread over the last day or so but I don't have any solutions.

Seems to me your theory of fluid leaking back through the loader control might be a clue of excessive pressure, a blocked return path, downstream from the loader valve. The fluid is supposed to just bypass at zero pressure through the loader valve and back to the sump (also bypassing through the 3-point control when it isn't in use) - except when a loader control is pushed/pulled to divert fluid out to a loader cylinder.

If all the hydraulics aren't the cause, then possibly that repaired linkage isn't right. The linkage may be calling continually for 'raise 3-point' when actually you don't want that.

I'm stumped. Aside from all my beginner questions in the threads I linked, i don't have much knowledge of hydraulics. I've never had to troubleshoot hydraulics like you are doing. My loader control replacement project ended up as a like-for-like replacement of the old dribbly control. After asking a lot of questions I decided to ignore some of the graybeard hydraulic specialists (self proclaimed?) on TBN who insisted the way Yanmar recommends in the YM240 manual, could never work. It worked before the replacement, and now, after.

In note to the “blocked path down stream from the loader valve”
With tractor off of course, I can put a funnel in the open hole where the banjo bolt screws into the 3pt valve and with the handle back, fill that funnel with fluid, push handle forward, and it will all go down and empty the funnel.

 

[California]

And what I知 saying is, when I get it close to any type of 渡eutral when adjusting the linkage thread by thread, the 3point still sinks to the ground and puts load on the pump. It痴 a little boggling..

California, could you post pictures of your linkage rods and how they sit with the lever all the way forward and the vertical finger not hitting the 3point spool pin by chance?

I expect to get back over to the ranch (orchard) by the weekend. It's 100 miles each way so I can't just pop over there for a photo, sorry. I'll post a photo on the weekend.

 

[Indirocz28]

I expect to get back over to the ranch (orchard) by the weekend. It's 100 miles each way so I can't just pop over there for a photo, sorry. I'll post a photo on the weekend.

Ahhh okay, no worries! I forget not everyone who has a tractor has it at their house like we do in Texas. Haha

 

[clemsonfor]

Ahhh okay, no worries! I forget not everyone who has a tractor has it at their house like we do in Texas. Haha

If Carey pops in to read this, I think he may have some linkage pics on his computer, but if not his ym2000 is right out back and he can take a pic for us. He is a regular on here.

I have been at my farm the last 2 weekends and meant to get some pics of the linkages for you this last weekend, but I was so busy putting my new valve on, bush hogging, trimming trees on field edges, or hunting I forgot to.

 

[kenmac]

I can take some and post them from my 3110 if that would help you. Just tell me what you need.
I have no idea if they are set up the same or not

 

[California]

I can take some and post them from my 3110 if that would help you. Just tell me what you need.
I have no idea if they are set up the same or not

My post #64 above links to some photos you can compare to. In particular here are Yanmar's shop-wall posters.
https://www.tractorbynet.com/forums/yanmar/220599-hydraulic-system-diagrams.html#post2522872

 

[duanew1]

My post #64 above links to some photos you can compare to. In particular here are Yanmar's shop-wall posters.
https://www.tractorbynet.com/forums/yanmar/220599-hydraulic-system-diagrams.html#post2522872

That first one has a good illustration showing that the valve has to be in a certain location in the middle to be in the neutral hold position.