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Frustration with H electricals

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Bergen

06-28-2001 13:14:20




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I recently split a 1950 H to replace the rear seal. Before I split the tractor, the generator worked exellently. I had to disconnect the wires on the generator to plit the tractor;and upon putting the tractor back together, the generator will not put out anything even if the tractor is running at full throttle. I've checked and rechecked to make sure that all the wiring is correct, including positive ground for the battery. I've cleaned all the connections on the regulator and in the electrical box. I unbolted the steering column from the platform but cleaned the bottom of the post and the platform, so i'm pretty sure the post has a good ground to the platform. The regulator is only a few years old and is or was in great shape before I started messing with it. I've put a newly rebuilt generator on with no success. I've tried grounding the generator F terminal to the generator frame and to the tractor. I've tried to polarize the generator by touching the F terminal and the Bat terminal on the regulator. I tried touching the Gen and Bat terminals on the regulator-- which made the ammeter show a large discharge. I tried touching the negative terminal of the battery to the F terminal on the generator. I tried, out of desparation, forcing the points in the regulator closed which made everthing get very hot with a large discharge showing on the ammeter (the ammeter is half a year old). When I split the tractor, I never touched anything on the regulator or in the box. What's going on here?

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Bob M

06-28-2001 14:36:03




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 Re: Frustration with H electricals in reply to Bergen, 06-28-2001 13:14:20  
Bergen - Here's what I see may have happened: 1 - A wire broke somewhere in the wiring harness when you split the tractor. 2 - You fried the regulator when you attempted to polarize by connecting F and BAT at the regulator (should have connected BAT and GEN)

If you have an ohmmeter, suggest disconnecting the wiring at the generator and regulator, then checking each wire end to end for continuity. If you find one that's open, repair/replace as necessary. Then put on a new regulator and see what you get.

Good luck!

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Bergen...oops

06-28-2001 20:46:52




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 Re: Re: Frustration with H electricals in reply to Bob M, 06-28-2001 14:36:03  
Original regulator and generator work fine now. Again took the wires between the regulator and generator off to check them and discovered that they were shorting each other inside the harness. Didn't even think of checking that the first time. Oh well, the electrical system should be in tip-top shape for the next few years; and the afternoons of frustration are forgotten in the moment of joy when everthing works... thanks Bob

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Bergen

06-28-2001 16:59:25




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 Re: Re: Frustration with H electricals in reply to Bob M, 06-28-2001 14:36:03  
Bob, I did check the wires from the generator and both checked out O.K. I hope I didn't fry the regulator, but I'll pull one off another tractor and try that one. I believe that I got the F-Bat sequence on this forum a while back, is the F-Bat sequence for a cut-out relay? I'm wondering why I had the F-Bat written down to polarize the generator.



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