Hydraulics

[buppy69]

I have a tractor with a factory Japanese loader that I installed a power steering kit on. The dealer that sold me the kit told me to hook the loader and the PS through a distribution block. When I did this my 3 point lift and loader became extremely slow. Sometimes the hydraulics will lock up and nothing will move including the steering until I jerk the steering wheel a few times. Next to the valve under the seat that adjusts hydraullic down speed is a plug. Is this a pressure port? Could I hook the front loader back in it's original position and hook the steering to this port?

Eugene

 

[Anonymous Poster]

Unfortanly I do not know how to fix your hyd. problem. But iI am interested in how the power steering kit works and what kind of tractor you have. Thanks, Bryan.

 

[pruntyc]

Of course, it could be a lot of other things. But it sounds to me, like you just might have a air lock in it somewhere. All it takes sometimes is a little air bubble to lock things up, and slow them down. That is where I would look first.

 

[EFC]

your distribution block is adjusted improperly, you will have to adjust the bypass pressure setting.

 

[buppy69]

I forgot to mention this; the threaded holes for the hydraulic lines on the block are half the size of the original holes on the tractor.

Eugene

 

[buppy69]

Buck,

How do I adjust the distribution block?

Eugene

 

[EFC]

Good question can you give me the brand and model #. I would guess it is a dedicated split like 60%/40% or 80%/20%. In other words it takes a specific % of the flow and allocates it for a particular port. Of course when it does that it slows the main flow down so your loader speed goes down. Some are adjustable and you can lower the % it is sending to the power steering. It is done by increasing or decreasing the orifice hole diameter. Usually with a needle valve. If it is not adjustable we will have to put a flow reducer in and see what happens from there.

 

[buppy69]

It is a factory Yanmar add on kit for a 26hp tractor. No instructions came with it, just a drawing of how the parts attached to the tractor. No numbers on the block. The is one place on the block not used. Looks like a hex cap. Don't know if it's another port or some kind of control. Does the fact that I had to reduce the hose ends come into play?

Eugene

 

[EFC]

Smaller hose ends do reduce flow but the Yanmar pumps are so small it shouldn’t matter much. Is there any way to scan or fax me the assembly drawing? I imagine you will find a flow adjuster under the hex cap.

 

[buppy69]

I threw the illustration away after I installed it a year ago. It's not on a Yanmar, it's on a Hinomoto E264.

Eugene