Need a hydraulic expert here!!!!

I'm looking for someone that's extremely
knowledgeable on open center hydraulic systems
on tractors and combines of all colors.
Here's my story.......I have a Massey 5200
articulated 4wd which is same as an old 4000 series
Massey 4wd hydraulic system wise from what I've
gathered so far!? Both series use an open center
pressure compensated system.
Okay, here's where it's gonna get interesting!!!......I
want to install a hydraulic auto steering system on
this tractor......we run all john deere auto steering
systems cause our mainly used tractors are green.
All John Deere 4wd tractors are closed center
systems so that rules using a auto steer setup off a
deere 4wd. However deere combines are open
center load sensing systems. My plans are to take
everything off a deere combine(steering orbital
motor w auto steering electrical valve, flow meter
valve, harness, steering shaft, wheel angle sensor)
and install on my Massey tractor so it's more
precise than my ATU steering setup I'm now using.

So here's the question: What is the difference
between pressure compensated and load sensing
systems? Can I use load sensing components on a
pressure compensated system and expect things to
work perfect?
I'm not very knowledgeable on hydraulics so I could
use some help here!!!! Thank you!

You have e-mail?

(quoted from post at 16:34:09 06/28/15) You have e-mail?

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[email protected]

Deere combines (except S680 & 690) are just a simple open center system on the steering circuit.

Forgot to add, the flow meter serves the same function as the wheel angle sensor in the autotrac system.

I could not get your e-mail to work. How about a phone number? Pressure compensation and load sense are 2 different animals.

(quoted from post at 15:55:29 06/29/15) Forgot to add, the flow meter serves the same function as the wheel angle sensor in the autotrac system.

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Good to know, I've been trying to figure out the purpose of that flow meter.......
Only thing that concerns me now is if I will have enough oil flow to supply the steering cylinders when turning? Might be turning steering wheel forever to get enough oil to turn? Probably be okay through field as steering isn't used much.
4wd tractor cylinders have a lot bigger cylinders than combine steering cylinders.
Would there be a way to boost the flow if necessary......my tractor is 29 gpm out of gear pump but that supplies both steering and 4 hydraulic outlets too.

Yup, my cell number is 815-674-8923.
You can either call or text me. Thanks

The hydraulic valve and flow meter I plan to use off a combine.......

You can compare the width of the rotor section of the steering valve with the one
that is on your tractor. The wider the rotor, the more flow per turn of the wheel. It
might be possible to swap that rotor with a wider one if necessary.

(quoted from post at 18:45:30 06/30/15) You can compare the width of the rotor section of the steering valve with the one
that is on your tractor. The wider the rotor, the more flow per turn of the wheel. It
might be possible to swap that rotor with a wider one if necessary.

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When u say rotor.......are u referring to the steering orbital motor???
Thanks

Yes, the part held on by six or eight bolts.

(quoted from post at 03:41:15 07/01/15) Yes, the part held on by six or eight bolts.

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Got ya, thought that was what u meant but just wanted to be sure!
Thanks