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Brushes look worn, but not to the point where there should be issues. While it is still out, take to another place to test, with someone who knows the equipment better. The modern alt test machine should give a print out with results.
As a precaution clean up all connections from the alternator to the battery, including earths. Wally P has written an excellent yearly planned maintenance procedure for the electrics. If you follow this procedure you cannot go wrong.
If you remove the Alt belt and the oil filter you can remove the rear alt duct housing then 2 screws hold the regulator in
Note I suggest that you only use Bosch components or you may have todo the job again
After the regulator the other things attached to B+ are the rectifier diodes that convert AC from the stator coils to DC . If the B+ supply was fully shorted out when the car was running the diodes can be destroyed - they will usually end up open circuit (though they may initially fail short circuit) and the alternator will not generate.
After the regulator the other things attached to B+ are the rectifier diodes that convert AC from the stator coils to DC . If the B+ supply was fully shorted out when the car was running the diodes can be destroyed - they will usually end up open circuit (though they may initially fail short circuit) and the alternator will not generate.
Alan
Thanks for the explanation. Can the alternator be repaired?
04-28-2020, 01:57 PM
Bad Alternator - need a better understanding
