Hey folks, back again with an update and question.
Got the engine pulled out of the tractor, disassembled, and have begun some cleaning. While investigating the low oil pressure / #1 rod bearing spinning and trashing the crank, I took the oil pump cover off to check the gears. It had quite a bit of thrust play in the shaft prior to taking the cover off. Hopefully the picture will upload and you can see what I discovered.
I don"t think the cover is useable anymore. Anyone know where I can find a rebuilt, or rebuilable pump? It"s the Continental Z134 gas engine.
Thanks for your help,