That is correct and should divert all flow from the pump into the left side of the valve and return it to the rear port on the block. If that were happening and you have the cylinders plumbed as we discussed the loader would lift and lower correctly. Are there any other ports or knobs/levers on that block?
I am quite familiar with that valve and have a couple new ones here on the shelf. As I said early on you should be using it with a power beyond sleeve but that is not what's causing your current problem. I assume the valve is in fact two A1 spools and its working properly.
No I do not have a test gauge my blade worked correctly when it was on there up and down side to side. But that is the right control for that tractor?
Assuming you got what you ordered you have the correct control valve.
It has down pressure when I dump the bucket but the lift cylinders do not hold and it picks the loader up and when I curl the bucket back the loader will be picked up off the ground but then the bucket will uncurl on it’s on like it has air in it maybe?
Whoa, whoa.
Yes it will pick up the loader and when I curl it back and let the lever back to neutral it doesn’t hold and will tilt forward and dump
It does not pick the front wheels off the ground. It picks the lift arms up and when I curl the bucket back the lift arms hold their height. The loader is a bison vh350. From the hydraulic block there are 2 ports the first port on the hydraulic pump side the one towards the radiator I have the line run to the P port on left side of control and the second port on hydraulic block towards the rear of tractor I have the line run to the T port on the right side.
Yes we covered that part of the plumbing in detail already.
Here are a couple simple diagrams of the valve and plumbing.
Where do you have you 2 port from hydraulic block going to? Do you have your T port from control going to fill port on transmission? My tractor is just like yours it’s a b7100 manual transmission
His valve has power beyond and his T port is going to transmissuon filler. That is not your problem.
On hydraulic block the first hole next to the pump is the pressure and it goes to the left side of control? But the second hole on hydraulic block goes where? To the back to tank on the right side or do I have to run a return line back to the transmission fill hole? Thanks for your patience I just got off work and am going to tinker with it.
The second port is not tank. It is pressure return for the 3pt. Your valve needs to be modified for pressure beyond and a third tank return but that is not your problem. As is it should work but may ultimately damage your valve. You have another more immediate problem to fix.
Ok yes I have traced it 3 times and it is exactly as your diagram. My only question is the T does the line from the second port on the hydraulic block go to the T port?
