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Generator damaged?

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wolfman

08-24-2005 18:13:44

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Can you damage a generator by using a 200 amp jump starter on the battery? The old 60's generator always worked properly til today after I used a 200 amp starter-charger to start the tractor (which had set for two months). Ran it an hour, needle straight up; turn on lights it would show discharge; but needle never showed pos. Did I screw up again?

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wolfman

08-25-2005 17:34:26

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Re: Generator damaged? in reply to wolfman, 08-24-2005 18:13:44

Thanks, folks for the info. This is a restored 60 with near new battery -and I don't run it often enough. It didn't fire the other day til I weakened the battery. 200 amp starter charger & it started. 12 volt batt, pos ground, hooked charger ok; mowed about an hr; no charge shown on guage-even after I turned lights on then off. Started it today(two days since); it started after more cranking than it should have taken and guage showed just a wee bit of charge. I figure that 200 amp hit on a near new battery must have quickly charged it til it didn't need any more charge that day. Possible?

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MLP

08-25-2005 03:10:21

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Re: Generator damaged? in reply to wolfman, 08-24-2005 18:13:44

If the tractor has set for a while with a dead battery then you may need to re polarize the generator.

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K.B.-826

08-24-2005 19:43:41

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Re: Generator damaged? in reply to wolfman, 08-24-2005 18:13:44

Sure the generator or regulator didn't fail before you parked it? Probably why you had to jump it today.

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John T

08-24-2005 19:33:22

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Re: Generator damaged? in reply to wolfman, 08-24-2005 18:13:44

Wolfman, Electricity can do strange things, but in general jumping or charging a battery shouldnt damage the Generator assuming all was done correctly???? The batterys connection to the Generator should be via the BAT terminal on the Voltage Regulator and there should be an OPEN cutout relay sitting there in between the BAT and ARM terminal which is whats connected to the Generator.

If you want a detailed troubleshooting guide to help isolate Generator or Voltage Regulator problems post back n let me know.

John T, retired electrical engineer

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Richard H.

08-25-2005 06:33:01

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Re: Generator damaged? in reply to John T, 08-24-2005 19:33:22

John, yea but he does not say if it is 12 or 6v. If it is 6v and he jumped it with 12v. at the battery he has probably fried the regulator... Just a thought, Richard

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buickanddeere

08-25-2005 18:16:59

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Re: Generator damaged? in reply to Richard H., 08-25-2005 06:33:01

Never seen a 60 with a 6V factory system.

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John T

08-25-2005 06:58:08

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Re: Generator damaged? in reply to Richard H., 08-25-2005 06:33:01

Good point Richard, I have seen batteries blown up by jumping 12 volts to a 6 volt battery. However, the only connection from the battery to the regulator is on the VR"s BAT terminal and theres still that normally OPEN cutout relay setting there which is electrically BETWEEN the VR"s BAT terminal and the Generator (same as VR"s ARM terminal) and its DC voltage withstand rating is far above 6 or 12 volts.

Stilllll ll arcing electricity can do strange things and even though in theory he shouldnt have hurt it by what he did DONT BET TOO MUCH MONEY ON IT LOL Theres other lil circuits n windings n resistors inside that VR which I agree he may have fried grrrrr rrrrr rr

Take care, John T

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wolfman

08-24-2005 20:37:09

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Re: Generator damaged? in reply to John T, 08-24-2005 19:33:22

Thanks,John. I'm not sure that I'm smart enough anymore to follow a troubleshooting guide. Too many "same-day" surgeries & blows to the head. Wayne S., retired mathematics professor. (always admired the EE's knowledge).

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Bob

08-24-2005 18:42:36

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Re: Generator damaged? in reply to wolfman, 08-24-2005 18:13:44

The generator should not have been damaged, unless you connected the cables backwards, and jumped the battery with reverse polarity.

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