So I’m now understanding why these two tractors came with the property!!!
Ford 3910. After exploring the 4610 in the thread below, I also found water in the transmission fluid in the 3910. Drained it and filled with diesel. Ran on idle for 5 minutes. Drained that and poured about a half gallon of hydraulic fluid in the top to run out the bottom and help carry the diesel with it. I left the 5 gallon drain pan, already holding about 3.5 gallons, under her to drip dry overnight. When I returned I was shocked to find that hydraulic fluid had overflowed the drain pan. I assume there’s a bad seal in there allowing the fluid from the rear to crossover.
The Google AI machine says the most likely culprit is the inner pto shaft seal, and that it can be replaced without splitting. I am wondering about the veracity of those two statements
If I pull the top cover of the tranny, should I be able to diagnose from where the oil is escaping the differential?
The Google AI machine also says that as long as I use the same fluid in both areas and keep the levels right that it’s not that big of a deal (sorta).
One more tidbit - the check level plug for the rear differential was a booger to get ahold of and turn. I hammered a 3/8” 8pt socket over the plug nut to get it to turn without rounding the edges. I might just let that socket live there. Anyway, when I removed the nut, approximately 2 gallons of excess fluid poured out of the check level hole. That was BEFORE I left for the night and discovered the mess the next day.
Ford 3910. After exploring the 4610 in the thread below, I also found water in the transmission fluid in the 3910. Drained it and filled with diesel. Ran on idle for 5 minutes. Drained that and poured about a half gallon of hydraulic fluid in the top to run out the bottom and help carry the diesel with it. I left the 5 gallon drain pan, already holding about 3.5 gallons, under her to drip dry overnight. When I returned I was shocked to find that hydraulic fluid had overflowed the drain pan. I assume there’s a bad seal in there allowing the fluid from the rear to crossover.
The Google AI machine says the most likely culprit is the inner pto shaft seal, and that it can be replaced without splitting. I am wondering about the veracity of those two statements
If I pull the top cover of the tranny, should I be able to diagnose from where the oil is escaping the differential?
The Google AI machine also says that as long as I use the same fluid in both areas and keep the levels right that it’s not that big of a deal (sorta).
One more tidbit - the check level plug for the rear differential was a booger to get ahold of and turn. I hammered a 3/8” 8pt socket over the plug nut to get it to turn without rounding the edges. I might just let that socket live there. Anyway, when I removed the nut, approximately 2 gallons of excess fluid poured out of the check level hole. That was BEFORE I left for the night and discovered the mess the next day.
