Today, I drained the hydraulic oil from the transmission/axle shared sumps and was pleased to see that there isn't a great deal of sludge in the bottom of either. The sludge is mostly black in color with some very light white streaks in it, so I'm confident that very little water has found it's way into the hydraulic system. The hydraulic oil itself is reddish black in color, but doesn't show any signs of serious water contamination, so I'll probably just filter and reuse it for now.
I haven't removed the side covers, and I don't yet know what the hydraulic filter looks like. My plan is to change the hydraulic filter unless it looks relatively clean, in which case I'll simply clean and reuse it until I rebuild the hydraulics at a later date.
Since the tractor is stationary at the moment, my plan is to flush both sumps using straight diesel fuel with some alcohol added to it to help absorb water. Having the steering box removed should make the process much easier since I can engage the shift forks and spin the gears while pouring diesel over them. Allowing some diesel to soak in both sumps overnight probably wouldn't hurt either.
I haven't removed the side covers, and I don't yet know what the hydraulic filter looks like. My plan is to change the hydraulic filter unless it looks relatively clean, in which case I'll simply clean and reuse it until I rebuild the hydraulics at a later date.
Since the tractor is stationary at the moment, my plan is to flush both sumps using straight diesel fuel with some alcohol added to it to help absorb water. Having the steering box removed should make the process much easier since I can engage the shift forks and spin the gears while pouring diesel over them. Allowing some diesel to soak in both sumps overnight probably wouldn't hurt either.