Synchronizer shaft not engaging oil pump
I just changed the syncro shaft and sensor for routine maintenance. Got it in, fired it up and ran fine for the rest of the day, then next mornin I'm comin in off the highway and my oil pressure drops to nothing so I immediately threw it in neutral, turned it off and pulled over. Now I have an undrivable vehicle parked outside. It still runs but the oil pressure won't even nudge from zero, this truck has never had oil pressure problems, the gauge has never strayed from the center the whole time that I've had this truck. I've already pulled the syncronizer back out, looked it over and everything, but it looks fine, is their anyway that it could have rounded off the oil pump shaft, I wasn't able to get a look at it so I don't know what condition it's in, I seem to not own a flashlight at the moment. It's a 97 ranger 3.0 by the way, any info on this would be better than great, I really don't know a whole lot, I got pretty shitty grades in school.