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Re: Hot generator

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Author  [Modern View]

08-27-2013 07:39:01

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I have same issue on my '48 8N. It gets really hot (not scorch the paint hot, painful to keep your hand on it hot) but it charges well, voltage output isn't excessive, new VR, I keep the bearings oiled, it's been polarized properly when I put the VR on earlier this year. Battery is about a year old and spins it over pretty well, starts right up and runs well. I had to take the genny apart to clean it when I first got this tractor, about 5 yrs. ago, it was not charging. A little cleaning fixed it up.

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08-27-2013 07:49:21

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 Re: Hot generator in reply to W_B, 08-27-2013 07:39:01  
Quoting Removed, click Modern View to seeAverage joe can keep his hand firmly on 140F, but not 160F. GM Arizona proving grounds on a 103F day has recorded alternator temperature of 305 to 433F, depending on where on alternator the temperature probe was located. So, your generator isn't REALLY hot. Think about is mounted to an engine that will be over 200F, so in time even if it made no heat of its own, it would still be quite warm-to-hot.

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R Geiger

08-27-2013 11:43:04

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 Re: Hot generator in reply to JMOR, 08-27-2013 07:49:21  
At what point, temperature, is it too hot?

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08-27-2013 12:33:30

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 Re: Hot generator in reply to R Geiger, 08-27-2013 11:43:04  
Typically, that point is reached just BEFORE the smoke begins to leak out!

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08-27-2013 13:07:58

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 Re: Hot generator in reply to Bob, 08-27-2013 12:33:30  

Bob said: (quoted from post at 15:33:30 08/27/13) Typically, that point is reached just BEFORE the smoke begins to leak out!
......and with the insulation technology of yesteryear generators, I expect about 300F would be in vicinity of that smoke point. At 400F, you are likely on the short fuse! If I spit on it & it sizzles (212+), I would look into it.
This post was edited by JMOR at 15:16:22 08/29/13.

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