my tractor is not charging
when i check the battery with a multimeter its around 12.4-12.5 and when i start it it drops to 12.3
so i researched testing alternators and i cant get any more then 12.3 when running.
its a 3 wire alternator. there was no dummy light hooked up so i bought one wired it in and when i turn the key on it comes on and stays on after i start it.
So the way its wired is- wire from alt b post to amp gauge then from amp gauge to battery pos.
-ground to the the frame, 1 terminal going to the dummy light then to the key switch, the other terminal going to volt regulator then to key switch
with my meter going from pos on battery to pos on alt and i get a reading of 0 same with the neg. i go pos from batt to ground of alt and i get 12.5 batt reading so i think my connections there are good. iv tried having the tractor at full idle for a minute or too and still no charge. iv tried exciting the alt with a jumper wire from b post to terminal still no change. bought a new alt hooked it up the same and still no change.
so is there something im missing here? maybe the new alternator i bought is a dud (it was a cheap refurbished one)
so when i hooked the new alt up it had no markings on the terminal so i hooked the dummy light up and it would only light on the one terminal when the key was on so im assuming thats the right one
also another question when i first started looking into this problem i think the wire coming from the volt regulator was on the terminal for the dummy light when i unplugged it it seem like the alternator slowed down? and when i touched it back on it seemed like it sped up or maybe vice versa i cant remember now
anyways if you made it to the end of the post and have any advice it would be much appreciated
thanks
This post was edited by Kylemac on 06/01/2023 at 05:26 am.
when i check the battery with a multimeter its around 12.4-12.5 and when i start it it drops to 12.3
so i researched testing alternators and i cant get any more then 12.3 when running.
its a 3 wire alternator. there was no dummy light hooked up so i bought one wired it in and when i turn the key on it comes on and stays on after i start it.
So the way its wired is- wire from alt b post to amp gauge then from amp gauge to battery pos.
-ground to the the frame, 1 terminal going to the dummy light then to the key switch, the other terminal going to volt regulator then to key switch
with my meter going from pos on battery to pos on alt and i get a reading of 0 same with the neg. i go pos from batt to ground of alt and i get 12.5 batt reading so i think my connections there are good. iv tried having the tractor at full idle for a minute or too and still no charge. iv tried exciting the alt with a jumper wire from b post to terminal still no change. bought a new alt hooked it up the same and still no change.
so is there something im missing here? maybe the new alternator i bought is a dud (it was a cheap refurbished one)
so when i hooked the new alt up it had no markings on the terminal so i hooked the dummy light up and it would only light on the one terminal when the key was on so im assuming thats the right one
also another question when i first started looking into this problem i think the wire coming from the volt regulator was on the terminal for the dummy light when i unplugged it it seem like the alternator slowed down? and when i touched it back on it seemed like it sped up or maybe vice versa i cant remember now
anyways if you made it to the end of the post and have any advice it would be much appreciated
thanks
This post was edited by Kylemac on 06/01/2023 at 05:26 am.