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Author Topic: replacement needed for generator on 671 detroit diesel  (Read 3705 times)
rag71011
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« on: January 07, 2007, 07:50:18 PM »

I have a converted GM 4101 coach with the original 671 diesel and gear driven generator.  My generator has a shorted field coil so I was thinking of switching to a high capacity alternator to charge the bus batteries and provide power for over-the-road a/c.  Does anyone know of a source for an alternator that would work for this purpose?  I would like to find one that can be gear driven like my existing generator rather than belt driven, if possible. 
Thanks for your help.
Bob Green
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« Reply #1 on: January 07, 2007, 08:09:47 PM »

Bob, Look for a 50DN oil cooled, gear driven alternator.

But..... the bad news is that they are REALLY Expensive. I think I've seen used ones for around $800, but I'm not sure.

Why not just have your generator rewound and rebuilt?

Or, you could do it yourself, it isn't a real hard job.

IHTH,
Dallas

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dave870
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« Reply #2 on: January 07, 2007, 09:27:47 PM »

Nimcobus.com should have a working takeout for $300
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gus
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« Reply #3 on: January 08, 2007, 09:32:45 PM »

Remove the original monster, add a pulley onto the drive from the engine and mount a truck alternator just to the rear of the pulley.

My 160 amp alt is set up this way and probably weighs 1/6 as much as the original while generating at low rpm. It is more amps than I will ever need.
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PD4107-152
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Ash Flat, AR
zimtok
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« Reply #4 on: January 09, 2007, 05:30:58 AM »

Remove the original monster, add a pulley onto the drive from the engine and mount a truck alternator just to the rear of the pulley.

My 160 amp alt is set up this way and probably weighs 1/6 as much as the original while generating at low rpm. It is more amps than I will ever need.

Could you post some photos of your set-up.
How the pulley is mounted the size of the pulley and such would be helpful.


.
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