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 - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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