The hydraulic block on the tractor requires a 7/8"-14 "90 Duro" O-ring fitting.
The standard female coupler from the factory is pictured. If it have international stamped on the collar, it is a safeway adapter. This will accept safeway and pioneer style male couplers.
If you were able to remove the adapter from the female coupler, it is just a 7/8"-14 x 7/8"-14, 90-Duro O-Ring adapter.
I'm still unclear what you're trying to replace or why, so I'll cover both. You can get both the 90 Duro O-ring and the internal 70 duro O-ring inside the female coupler if either of those leak. If you need a new Female coupler CNH 374780R92 is the only one I've been able to find. You will need to use the 7/8"-14 x 7/8"-14, 90-Duro O-Ring adapter as the coupler is female thread. If you can't find the factory replacement, you can use a straight adapter 7/8 O-ring to pipe. These are expensive puppies, so I just replace them with OEM.
If you can't get them to mate, A NPT standard pipe (what ever your loader hose requires) to safeway/pioneer coupler will work, as pictured above.
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Today's Featured Article - The Fordson F Ignition System - by Anthony West. A fellow restorer contacted me earlier this year asking for some help and advice on a model F that he was restoring. He had over a period of months spent a fair amount of his hard earned cash on replacement parts for the old "trembler" ignition. Sadly though all his efforts seemed to be a waste of time and money as he still couldn''t get the temperamental old thing to run correctly!! If i said that this was a little frustrating for him that would be "conservative" in fact the problem had reduce
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