Ben755, I still lean towards thinking your leak has nothing to do with your 3 point jumping. No doubt you probably need to repair the leak. If you repair the leak I will be interested to know the outcome on the lift jumping.
3-point hydraulic problem still present
- Thread starter Ben755
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The pics below show the 3-point assembly before it was removed from the tractor. I didn't get a good image of the hydraulic lines going to the
quick connects and FEL, but they can be seen on the right side of the housing. The lines are side by side and the leaking fluid runs down both lines -
could be both lines leak. I recall only seeing one crush washer on each connection. Maybe, that's the problem. The only spring loaded valve that
I found was set by the rotated position of the end plate on the left side lift arm. Removing this tension, deactivates the 3-point completely. The control
valve in the 2nd pic can be accessed and adjusted from below the operator's seat. (no info on it in the manual from Hoye). It apparently regulated fluid
flow between the FEL and 3pt since it has a significant effect on both.
quick connects and FEL, but they can be seen on the right side of the housing. The lines are side by side and the leaking fluid runs down both lines -
could be both lines leak. I recall only seeing one crush washer on each connection. Maybe, that's the problem. The only spring loaded valve that
I found was set by the rotated position of the end plate on the left side lift arm. Removing this tension, deactivates the 3-point completely. The control
valve in the 2nd pic can be accessed and adjusted from below the operator's seat. (no info on it in the manual from Hoye). It apparently regulated fluid
flow between the FEL and 3pt since it has a significant effect on both.
Yes, there should be a copper washer/gasket on both sides of the banjo fitting.
First time for me to see the little valve you pictured. Looks similar to the drop speed valve on some of the old YM series but the FX28 has a round knob between your legs for that adjustment. I have no idea what your valve is for.
First time for me to see the little valve you pictured. Looks similar to the drop speed valve on some of the old YM series but the FX28 has a round knob between your legs for that adjustment. I have no idea what your valve is for.
clemsonfor
Super Member
Leaking hoses wont effect the 3pt unless there so severe that the pump cant overcome the loss. I was thiking we were talking about a leaking valve under the seat that controls the 3pt.
careyo63
Elite Member
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- 77 Yanmar YM2000 63 Ford 2000
Not that severe IMO. A manual would be real nice on this model. It looks as though the First pic. is the 3Pt. Lift Arm Drop Rate. From center the more you open it the faster the drop of the 3pt. arm. Which effects the speed of the lift. And maybe less pressure to the FEL. Check and see if I'm right and find a center and adj. the speed of the drop.
The 2nd. pic. looking at it is your lift height Adj. of the 3pt. lift arms. That keeps the arms from going to high " hitting the tractor" by releasing the Hyd. pressure. If the adjustment is releasing the pressure to the Hyd. Control valve before the arms are all the way up that could also make it loose Hyd. pressure to the FEL.. My thinking knowing my setup to the looks of yours. And I don't think the leaking is your problem either. I believe it's lack and loss of pressure. IMO. for you to loose enough hyd. fluid to cause the jump either fluid not getting to the pump or the 3pt. valve relieving pressure.
The 2nd. pic. looking at it is your lift height Adj. of the 3pt. lift arms. That keeps the arms from going to high " hitting the tractor" by releasing the Hyd. pressure. If the adjustment is releasing the pressure to the Hyd. Control valve before the arms are all the way up that could also make it loose Hyd. pressure to the FEL.. My thinking knowing my setup to the looks of yours. And I don't think the leaking is your problem either. I believe it's lack and loss of pressure. IMO. for you to loose enough hyd. fluid to cause the jump either fluid not getting to the pump or the 3pt. valve relieving pressure.
I do have an after market manual for the FX series, but it doesn't mention the two controls in the pics. The manual says that 3-point drop speed is controlled by the lockout valve just below and in front of the seat. The small control in the 1st pic (right side just above the banjo line connections) can be rotated from 0 to about 45 degrees, and any adjustment past about 10 degrees causes the FEL to do crazy things, ie causing the joy stick controller to move the loader in the wrong direction. IMO ? What exactly is the IMO ? My plan now is to just to fix the fluid leaks and, probably live with existing problems. The front cylinder cover (with lockout valve assembly and pressure connection from pump) may have a slight leak, but I won't know until I can remove the seat and panels.
careyo63
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Injury's make it hard to type and I'm basicly almost one arm & handed so I ABBV. abbreviate a lot. IMO. IN MY OPINION............... That's what I'm saying. The 3point lock is between my seat and it looks like this. So that tells me I'm correct in what the first pic. does.... You have to have WEIGHT or something connected hooked up and lifted to the 3pt. arms to check and set it. Keeping the Lock all the way open.
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