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Re: [GMCnet] Alternator [message #312472 is a reply to message #312455] Tue, 24 January 2017 17:23 Go to previous messageGo to previous message
Billy Massey is currently offline  Billy Massey   United States
Messages: 916
Registered: January 2004
Location: Central Texas
Karma:
Senior Member

It's done and continues to do what it's supposed to for at least 33 years.
Don't fix it if it isn't broke. That's when you'll start having trouble.


On Jan 24, 2017 2:53 PM, "Russell Keith" wrote:

When we bought our '78 GMC Eleganza II this past August, it came with
decent maintenance and repair records back to 1983. I was digging through
the
documentation again last night to see when the alternator was last
replaced, and could not find any record of a new alternator. According to
the
voltmeter in the dash, the alternator is putting out about 13.5 volts under
load with the lights on. Could this actually be the original alternator?
(see pics below) I could not find a part number or model number on the
current alternator. If it is original, does someone have a current part
number
and recommended brand for a replacement? I think the alternator is charging
the house batteries as well as the chassis battery. Do I need to go with
the 100 amp alternator, or an 80 amp?

Thanks again for the help.
Russell

http://www.gmcmhphotos.com/photos/data/7016/medium/alternator2.jpg

http://www.gmcmhphotos.com/photos/data/7016/medium/Alternator_Back.jpg

http://www.gmcmhphotos.com/photos/data/7016/medium/20170114_144002.jpg
--
Russell Keith

1978 Eleganza II

Dunedin, Florida

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