Working on getting everything working again. Now that I have my back glass replaced, time to fix the heat, later but not yet a priorty, the air. I cleaned out the rebuish that had accumulated in and around the fan blower. Was not as much in there as I expected since the guy I brought it from had let it sit for 5 years with no back glass, uncovered. Anyway, I worried that the motor could be froze up because of corrosion. So I took some long nosed visegrips and reached in and tried to turn the motor shaft. At first it would not move but after a few tries it would turn about 100% and stop. Turns easy with the wrench but not enough that an air hose blowing on it would make it spin. But it does jam at 3/4's a revolution. Not sure if this is typical or the motor locking up. It seems that if it spins any then it would be free. ?????? second thing, the AC/Heat fuse [f1 I think] was blown. I replaced it and tturned the fan switch on. Checked the fuse. It was blown. So I added another fuse. Turned the unit on and checked the fuse. It was still good. Only after I turn the motor switch to on does it blow the fuse. It sounds like the fan motor is locked up therefore blowing the fuse. But it does turn freely for 3/4's a revolution?????? I don't think that it is something lodged in the squirrel cage fins. If it were, it would give slightly with pressure. Cold out and I can't raise the cab in my garage where I have been working on it, so I can't try getting to the shaft from the under side. I'm trying to recall if it can be reached without pulling parts off. If I could just get a better grip on that fan axle, I'd force it loose. Any help greatly appreciated