I do not have my F504D at my house right now, but I know mine was a tri-cycle later converted to a Speeco (I think) WFE. The tri-cycle steering was retained and the WFE uses the existing setup. It has lines going in/out the "hand-pump" at the steering wheel and two lines go to the front to a power-steering oil cooler. The actual steering gearbox is manual with amplified torque comming from the hand-pump thru the steering shaft. Maybe the C1 and C2 is the supply and return from the cooler.
I think the power steering hydraulic circuit goes something like this: From main pump to the flow divider, then to the hand pump, then to the cooler, then from the cooler, then back to the sump. Some of the "Old Salts" here can correct me if I am wrong, but that is a total of 4 ports.
These are pics of the WFE and the tie-rod to steering arrangement.
Steering box to tie-rods (Underneath view)
Steering box to tie-rods (Left side view)
Flow divider
Corona (Liguid courage to keep sinking money into a 47 year old tractor)
Proud IH owner
Tie-rod repair
No explination... But notice her HAT! Started her off early!
Got carried away, sorry for all the pictures. Captain Morgan and I set sail a few hours ago.
If I can be of further help, drop me a line. I have been all over my F504D and have learned a lot of ways NOT to do things :twisted:
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