Yanmar with Koyker Loader issues

[fixerupper]

Hi, I haven't been able to successfully get any answers on the proper hookup of my FEL to my Yanmar 1610D. So far I have narrowed it down to the proper hookup to the spool valve. The question is what type of valve configeration do I need?

Currently it is hooked up to a new valve as an open center and the three point works great. The FEL only gets about 700 PSI at 1/4 tilt on the handle, at full handle I get zero PSI and the FEL drops. Should I have a closed center plug installed or a power and beyond?

Any answers would help at this Point.

THX,
ADAM

 

[gengine]

I don't know your tractor or it's hydraulic system, but iirc, you need a power beyond for your three point.

 

[gengine]

I don't know your tractor or it's hydraulic system, but iirc, you need a power beyond for your three point. You have your fluid in, your return to the reservoir, and you Need power beyond for your three point, because most return ports on the valves are not strong enough to handle the pressure. You do need an open center valve for your tractor.

 

[J_J]

All valves should be installed in series.

You will need a PB adapter in the PB port.

Your flow path should be something like this.

Pump to FEL IN port, PB out to 3pt IN port,

Tank port should go to tank.

Install a hyd gage n the IN port of the FEL to monitoring the hyd system and trouble shooting.

Check the FEL relief pressure.

If you want to use a log splitter or something hyd on the 3pt, then there are other hookups.

 

[JCByrd24]

As has been said, you do need power beyond. It functions the same as open center, but the power beyond is designed to handle the pressure that will be present in the loader valve when the 3ph is used. You do no want closed center, it will dead head the pump when in neutral (no handle movement) and bad things will happen. Also remember that pressure will only exist beyond a few psi when you give resistance. With all valves in neutral the pump just runs in a loop through the valves back to the tank. Sort of like a garden hose with no nozzle on it. When you raise an empty loader it'll need a couple or few hundred psi. When you lift a load it'll be higher, and when you try to lift so much it won't lift, you see max pressure of the relief valve. In terms of your situation changing when you go to full deflection, you may be going to float or regen, which are features of some valves that are beyond the normal up/down, in/out positions. If float is beyond up, you have your work ports backwards, float should be beyond down.