Hi Bob, Please find a picture of the alternator we are replacing. It’s an overhauled alternator with 66 hours . I got a red alternator light and wasn’t able to reset it. It turned out the 3 amp fuse blew at the firewall. What would cause the case screws to be loose ?
Washer P/N is 658715 at Aircraft Spruce. I would send it back to Aerotech since they overhauled it very recently. The RED alternator out light only indicates that the AUX winding has no voltage output or the alternator has failed. If RED light illuminates check the ammeter and if alternator is still providing output flight can continue.