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BNO BBS - BNO's Bulletin Board System » THE ARCHIVES » Year 2006 » April 2006 » Application and repair 60 amp 28VDC milspec alternator « Previous Next »

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Dave Silva (Cypress)

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Posted on Thursday, April 20, 2006 - 9:02 am:   

Greetings,

I've acquired about 16 of these HUMVEE alternators. SOme look brand new. I have no idea how to test them. I figure someone on this board is familiar with them.

I can spin them at 1800 RPMs and look for voltage but I'm clueless about field voltage, where and how to apply it, or other ways to troubleshoot these things.

I'd be grateful for any help ya'll can provide.

Thanks
Richard Bowyer (Drivingmisslazy)

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Posted on Thursday, April 20, 2006 - 10:26 am:   

You need to apply a DC voltage to the field winding. It might be labeled F or something like that. There should be heavy duty connection which would be the output voltage and the F connection should be a light duty connection.

Applying 28 volts to the field winding should provide an output in the neighborhood of 30-35 volts at the heavy duty connection.

If you have a variable output DC source, varying the DC voltage to the field should vary the DC output.
Richard
Marc Bourget

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Posted on Thursday, April 20, 2006 - 3:34 pm:   

Prestolite or Leece-Neville,

You might want to try their website for manuals.
Doug g

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Posted on Thursday, April 20, 2006 - 9:29 pm:   

Advance Auto used to test alternators for free, or check your phone book for a alternator rebuilder and ask him to test them for a few bucks.

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