Working on my Farmall 400 again, rewired it enough to start it again but it was over-revving. After some inspection, I hadn't gotten the governor to carb throttle shaft in the right groove. Fixed that and started it the other day, ran ok for 45 seconds or so. Started it this morning to test out a new alternator. Ran ok for 10 seconds and then I noticed a large drop in oil pressure. I shut it off right away. On subsequent attempts to crank it the starter makes a terrible grinding noise and does not turn the engine over. Took the starter over to the guy who repairs them for me, he tested it and found nothing wrong. Seems to me there are new burrs/grinds on the starter gear that weren't there before. Engine can be turned at the fan yet but it feels awful tight at the ring gear when I stuck a long screw driver in there and attempted to turn it over by hand. How much trouble am I in for? Thanks,
Pete
Pete