If you think the leak might be coming from the hydraulic belly pump itself - you can remove the drive shaft for it, drain the oil out of it and see what happens.
The lower seal will leak more than the upper - the upper seal should be above the oil level in the transmission (I think).
To get that lower seal out isn't much trouble at all. Remove cotter pins from the pump shaft, slide sleeves toward middle of shaft, rotate shaft until it drops out the bottom (slots will be vertical). Put tractor in 1st gear, lock brakes, use a square bar to turn the drive slot counter-clockwise to unscrew it from the shaft.
Remove 3 bolts and the seal and retainer should pop right off.
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Today's Featured Article - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
... [Read Article]
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