2072 electrical issues

[Shaner]

I finally got the 2072 put back together after addressing the leaky rear end, and fixing the pilot bearing in the engine side of the drive-shaft. I put the rear PTO back on, the three point hitch and hooked up my 50" john deere finish mower to do some grass cutting. Well, every time I engage the rear PTO to run my mower, it will work for a good 2 minutes then blow a fuse. I cannot figure out why it keeps blowing fuses. I went and looked at all the wires, made sure everything was good, made sure nothing was touching anything.

It never had this problem before. My seat switch is bypassed, as is the reverse relay. The only safety switch still hooked up is the brake pedal switch. Anyone know what my problem could be?

[Oak]

Shaner, check your field coil. My 1772 rear pto Ohms out at 5.79 ohms at 70 degrees. As you know, there is no adjustment on them so that rules out the air gap. Maybe make sure your getting the full 12 volts on it too. Good luck.

[Shaner]

what happens if the field coil on the rear PTO is bad? is there any way it can be repaired or is it completely screwed?

[Shaner]

Okay I went through the wiring one last time....I found a P.O. bypass of the seat switch had uncovered spade terminals on them. I flipped them over and sure enough, burnt mark like it grounded and "welded" itself. I replaced it, and applied electrical tape. Also, I found the ignition switch had a touch of corrosion on it so I took it off, filed the spades down, WD40d them on the pigtail and switch and reconnected....and now everything works again. Just mowed all the lawn with not so much as a hickup. I think I may have found the issue in one of those two things. I hope! Thanks Oak for the help tho.