I just got a 1946 JD B the guy wasn't sure how long it sat. We brought it home rebuilt the carb cleaned the gas tank fuel bowl sanded the points down cleaned the spark plugs and it started. I couldn't believe it. The manifold has a chunk missing out of it that someone tried to patch. So we had it running good sitting in front of the garage. Decided to see if it would move. Clutch felt great put it through all the gears no problems. Drove it a 2-3 laps around the yard had it in 2nd gear all of a sudden something started grinding by the time I pulled the clutch back the tractor had cut off. The tractor started right back up. Now I can shift it into any gear it won't move. The wheels are locked right up. I drained the fluid wasn't very healthy but did have some in it not anywhere near what it was supposed to. I should have checked the fluid first but I didn't even think about it. I didn't expect it to run much less move got caught up in the excitement. Where should I start? I'm thinking a bearing in the trans locked up but really have no idea. I've had Ms and 40s apart but never a B. Thanks