165 hydraulics question(s)

MT in PA

Member
Guys
Sorry about the long question.......

I have a 165 with the dual aux valves on the trans cover (only one side is plumbed). The draft and position control never worked correctly. The only way to operate the the 3pt was by pulling the lever back until the arms were in the desired position then put the lever back to neutral. To lower the arms i would push the valve forward. Forward is also the position required to use the loader. Last weekend I worked through the valve synchronization steps and noticed that the spring holding the knurled adjustment screw was broken and the adjustment screw was threaded all of the way in. I made the sync adjustment and put a lock nut on the back to hold things in place. Now I can control the position of the 3pt arms with the draft control lever. Is that correct?
The second issue I now seem to have is that when I try to operate the loader the 3pt arms move to the full up position before the loader will move and the pressure to the loader seems weak/slow.
Does this indicate that the aux valves need to be rebuilt?
 
The draft control isn't used to control the height of the 3 pt. Draft control is only used with ground engaging implements. Without seeing your set up, I'd guess you have 2 levers on the trans. cover. Only one is plumbed because the other one(usually the inside one) is internally plumbed to operate the 3 pt. from the side 3pt. controls. You pull it back and the side controls should work the 3 pt. You can't use the aux. at the same time and that lever must remain in neutral. When using the aux. hyd's., the 3 pt. lever has to be in neutral and the side controls all the way up. Draft control all the way up and position all the way up, then pushed over past the normal stop and pulled up even further into constant pumping position. If you could post some pictures of what you have would help.
 
The draft control isn't used to control the height of the 3 pt. Draft control is only used with ground engaging implements. Without seeing your set up, I'd guess you have 2 levers on the trans. cover. Only one is plumbed because the other one(usually the inside one) is internally plumbed to operate the 3 pt. from the side 3pt. controls. You pull it back and the side controls should work the 3 pt. You can't use the aux. at the same time and that lever must remain in neutral. When using the aux. hyd's., the 3 pt. lever has to be in neutral and the side controls all the way up. Draft control all the way up and position all the way up, then pushed over past the normal stop and pulled up even further into constant pumping position. The outside lever on the trans. cover would be used to operate the aux. hyds' or pulled back to supply oil to the seperate loader valve. If you could post some pictures of what you have would help.
 
Stick welding

You have the configuration correct.

After the adjustment this is the way that it is working though. To clarity. The Position Level is acting as a high position stop and the Draft Level is acting as if geared to the arms. If the position lever is in full up and I move the draft from mid-point to up, the arms follow the draft lever. To make them go down I have to move the lever forward (dumping the pressure I assume). Constant pumping does not seem to change anything. That does not seem correct to me either but this is my first tractor so I don’t know anything for sure.

In as far as the valves, when I received the tractor last spring there was no reaction from Draft or Position control. The only way to operate the arms was with the valve. Holding the valve back until the arms were in the desired position, moving back to the center when they were where I wanted them. I would disconnect the loader hoses before doing this. The loader is a QD type and the plumbing from the valve runs to the QD lines. When I wanted to use the loader I’d connect the hoses and move the lever to forward. When I would operate the loader valves the arms would move to the full up position before the loader (bucket or arms) would mover.
In an attempt to fix this issue I moved the hoses from the outside valve to the inside valve. That allowed the loader to work without the arms moving, so I left the plumbing that way.

Now after making the sync. Adjustment I am back to the same condition but now I have some reaction out of Draft and Position control (although it may not be acting correctly)

You are saying that the inside valve is internally plumbed. Is the inside valve supposed to be isolated from the outside valve? I get the feeling that there is some kind of port or leak connecting both valves. When I have the lever in the loader position and arrive at the max position on any hydraulic tool the valve pops back to the center as if something is back feeding the valve….In some way the 3pt and the remote loader are hydraulically connected at the same time no matter the valve position. That is why I think maybe the valves need to be re sealed?

Thanks for all the help. I really do appreciate the advice. I’m usually pretty good with this kind of thing but this one has me stumped. Too many variables..

I’ll try and load pics tonight if you think it will help.

Maybe video over the weekend if no one has a solution before then.

Thanks again, Mike…
 
I'm not a real expert on these but there has to be some internal plumbing for the inside valve to control flow to the side 3 pt. controls. There could be something messed up with the linkage for the side controls. There's some MF experts on here that could help you a lot more than I could.
 

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