how do i prime the oil pump on 06 5.4lt ford E350

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i had to remove and clean the sludge out of the oil pan and tube but i now have pressure. the only thing is that it dr started and tripped a code how do i prevent this i assume i need to prime the pump but it is mounted on the crank shaft its not like most other pumps everybody i talked to has never seen one like this. maybe i could get a little advise if possible