Posted by BigDanT on December 30, 2016 at 06:23:45 from (69.128.172.213):
I've got an issue with a 8n sidemount I just got back together. Put a new remanufactured alternator on it and noticed it was putting out just under 16 volts. Took that off , went to Autozone and had it tested, it failed and was given a different one. I installed it and started the tractor, had the same results. I understand I could have gotten another bad one but, we tested this one before leaving the store and it tested good. The alternators are Delco 7127's and are wired like many I have done before, #2 terminal jumped to B post, 12 gauge wire running form B post to terminal block on dash, #1 spade terminal running to coil side of terminal block with a diode installed inline. I'm using all new wire and have a volt meter installed instead of amp meter. I made sure the in dash volt meter was correct by using my Fluke meter while running and it showed the same, just under 16 volts. I also checked the voltage at the #2 and B post terminal while not running and had the correct battery voltage. For giggles I removed the #2 jumper wire and started the tractor, tester showed 14.3 volts at the battery while running??? Could this be a one wire alternator? They tested them at the store with 3 wire connectors and I have used this type before as 3 wires with no issues. I'll be the first to admit I'm electrically challenged but this seems like it may be something simple I'm just overlooking. Any help would be appreciated.
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