Was just thinking today that I am starting to get caught up a little with the most urgent crop spraying done and a couple of hundred acres left to go. I was working a little summerfallow while waiting for the crops to advance a little before spraying them. Bad weed situation on the one summerfallow field but I managed to grind my way through a day of gut wrenching bouncing over the rough ground and piles of dirt and weeds and finish. Heading home to start another field at 5:30 when the alternator light came on the dash. Actually its a small miracle that I spotted it. My first guess (fan belt) was right as I saw the temperature gauge start a rapid climb. Lucky enough to be near an approach where I could pull over out of the way of what little traffic was moving (not much). A phone call had help on the way pretty quick and we had my only spare old used fan belt installed . It promptly flew to pieces when I started the engine. Perfect timing for my brother the mechanic to appear and see what I had missed, a failed damper pulley on the engine that put the fan belt so out of line it would never stay on. Good thing I hadn't installed a new belt and wrecked that too.
I've put an inquiry on the New ag talk forum to see what good advice and comments on this repair job are available there.