Help with charging system! Only getting 12.6 volts!

Joined
Nov 29, 2007
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I have a newly rebuilt alternator in an HJ45 1980. All grounds good, anybody think it could be the regulator? I'm only getting 12.6 v on idle and only up to 12.8 when reving engine. It is a diesel engine......Any help or ideas?????? Battery is brand new big boy and is fully charged.......Please let me know of any ideas.....Regulator looks like it's mint!
 

Ron R

Drive a Landruiser, enjoy life
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Could be that something went wrong with the rebuild alternator. But I'm afraid it's the regulator if you're sure your voltmeter is good.
Are you looking at a meter in the dash or have you a handheld (multi-) meter connected to the battery posts?
And if so, have you tried a second one.
Just to exclude that you are hunting for the wrong item.
 

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