Alternator woes....
03-18-2004, 01:29 PM
#1
Pro
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Alternator woes....
Anybody have any clue as to how to properly check the rectifier bridge of an alternator for a 1974 corvette? According to the manual, mine is AFUd, but every new one I have tested is the same. The alternator is not putting out 14V, the regulator and stator and diode trio all check out to the correct readings according to the manual. I just don't get it.
03-18-2004, 01:33 PM
#2
Melting Slicks
Re: Alternator woes.... (thevetterisbetter)
THe best way I found was with the bridge on the bench first fold back the straps under the nuts to isolate each diode before checking as per the manual.
Steve :steering:
Steve :steering:
03-18-2004, 04:04 PM
#4
Team Owner
Re: Alternator woes.... (thevetterisbetter)
I guess being an old phardt Electronics guy gives me an unfair advantage....
I just hook an oscilloscope up to the alt output stud, and look at the waveforms....tell in an instant if it's the diode pack.....
GENE
I just hook an oscilloscope up to the alt output stud, and look at the waveforms....tell in an instant if it's the diode pack.....
GENE
03-18-2004, 07:39 PM
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Re: Alternator woes.... (mrvette)
Gene
I did that. According to the scope it's bad. At least I think so, the entire wave was present and I was told that only the positive part of the wave should be there.
I did that. According to the scope it's bad. At least I think so, the entire wave was present and I was told that only the positive part of the wave should be there.