IH Powersteering Question

This pertains to my 650D. It came from the factory with hydraulics and powersteering. Powersteering on these consisted of a slave cylinder that acted on the drag link.

At some point, dont know if the original hydraulic pump in front of the distributor quit working or what, but they added an external hyd. pump out in front of the grille that's driven off the front of the crankshaft and just put plugs in the original hyd pumps outlets. When they did this, they also just ran a short peice of hyd hose to "loop" the outlets on the powersteering slave cylinder together. All the original hydraulic system is gone- the front mounted pump goes to an added-on resivior tank and fender mounted spool valves.

My question is- if it can be done- what would I need to do to tap into this existing hydraulic system to be able to make the powersteering work again? I don't care about the "correct police" in this case- I'm gonna put a loader on the tractor and want the powersteering to work. How do these slave cylinders on the steering function? I have an original parts-book diagram of what went where, but it doesn't help me much with my current "fabricated" hydraulic system. Any advice would be helpfull! Thanks!

The closed end of the hydraulic assist cylinder has something that looks like a spool from a typical hydraulic valve. It is buried inside and not visible. The ball on the end of the pitman arm moves the spool and directs the flow.

Very simple and probably rebuildable with o-rings. Never had mine apart.

The steering valve in the steering cylinder is open center. All you need is a flow control valve w/safety, reservoir, any pump, and misc hoses.

If you are going with IH, make sure the flow control valve is 364 841 R93. It has an internal transverse regulating spool on the lower sides of the valve casting.

If I were in your shoes, I would go to a salvage yard and get the right parts including the pump. Everything is mounted out in the open and easy to get to. It should be cheaper than making up alot of hoses and buying an aftermarket FCV. The IH valve will be pancaked onto one or two implement control valves. Get the whole thing.

My IH 2444 has double ram hydrostatic steering.

Parts books shows what they called a "regulator valve" that mounted up by where the original touch control valves were, but of course that's all gone now.

I will look thru my manual tonight.