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Just to bring this thread to a conclusion....
After consultation with Dr. Bert and some discussion of the finer points of the 722.1xx ATSG manual (including the fact that nowhere is it mentioned that all measurements are metric, for example) it was determined that a crucial fact was omitted from the manual. The manual says that the pump should "turn freely" after the bolts are torqued to about 15 ft lbs. I assumed that meant that if one inserted a screwdriver in the slot of the front pump, it would turn freely. Apparently, that statement assumes that you have some sort of mandrel that simulates the end of the torque converter, because if you try to turn the gear with a screwdriver the gear binds and you think you have grit in the pump. I set the torque converter on the bench and spun the pump with bellhousing above it. In that configuation, the pump was fine.
Many thanks to herr Doktor for his guidance in this matter.
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