I am considering buying a 1959 model 550 serial #81-359-519 spec. # 45-0035.  The issue of hydraulics on this tractor makes me concerned.  

I want to run a 17' Kuhn tedder as one of my implements.  The two outside heads fold up into the transport position with remote hydraulics.

There is currently a male hydraulic fitting and a capped 3/8 iron pipe end extending out on the right side of the transmission case under the seat.  I cannot see any lever that would activate the hydraulic pressure in these lines, should there be one?  Is this an open or closed hydraulic system in this tractor?  Do I need to connect a remote valve to get remote hydraulics?  Will the internal hydraulics handle this type of implement piston work?  Will they run a 3pt hitch logsplitter?

Also the draft control selector lever pictured in the IT service manual is absent on this tractor (under the right side of the seat.)

Hope someone can help, I really like the tractor.